mirror of
https://github.com/crunchy-labs/crunchy-cli.git
synced 2026-01-21 12:12:00 -06:00
652 lines
29 KiB
Rust
652 lines
29 KiB
Rust
use crate::archive::filter::ArchiveFilter;
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use crate::utils::context::Context;
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use crate::utils::download::{
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DownloadBuilder, DownloadFormat, DownloadFormatMetadata, MergeBehavior,
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};
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use crate::utils::ffmpeg::FFmpegPreset;
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use crate::utils::filter::Filter;
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use crate::utils::format::{Format, SingleFormat};
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use crate::utils::locale::{all_locale_in_locales, resolve_locales, LanguageTagging};
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use crate::utils::log::progress;
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use crate::utils::os::{free_file, has_ffmpeg, is_special_file};
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use crate::utils::parse::parse_url;
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use crate::utils::video::stream_data_from_stream;
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use crate::Execute;
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use anyhow::bail;
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use anyhow::Result;
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use chrono::Duration;
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use crunchyroll_rs::media::{Resolution, Subtitle};
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use crunchyroll_rs::Locale;
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use log::{debug, warn};
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use regex::Regex;
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use std::fmt::{Display, Formatter};
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use std::iter::zip;
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use std::ops::Sub;
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use std::path::{Path, PathBuf};
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use std::process::{Command, Stdio};
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#[derive(Clone, Debug, clap::Parser)]
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#[clap(about = "Archive a video")]
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#[command(arg_required_else_help(true))]
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pub struct Archive {
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#[arg(help = format!("Audio languages. Can be used multiple times. \
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Available languages are: {}", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
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#[arg(long_help = format!("Audio languages. Can be used multiple times. \
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Available languages are:\n {}\nIETF tagged language codes for the shown available locales can be used too", Locale::all().into_iter().map(|l| format!("{:<6} → {}", l.to_string(), l.to_human_readable())).collect::<Vec<String>>().join("\n ")))]
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#[arg(short, long, default_values_t = vec![Locale::ja_JP, crate::utils::locale::system_locale()])]
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pub(crate) audio: Vec<Locale>,
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#[arg(skip)]
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output_audio_locales: Vec<String>,
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#[arg(help = format!("Subtitle languages. Can be used multiple times. \
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Available languages are: {}", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
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#[arg(long_help = format!("Subtitle languages. Can be used multiple times. \
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Available languages are: {}\nIETF tagged language codes for the shown available locales can be used too", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
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#[arg(short, long, default_values_t = Locale::all())]
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pub(crate) subtitle: Vec<Locale>,
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#[arg(skip)]
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output_subtitle_locales: Vec<String>,
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#[arg(help = "Name of the output file")]
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#[arg(long_help = "Name of the output file. \
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If you use one of the following pattern they will get replaced:\n \
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{title} → Title of the video\n \
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{series_name} → Name of the series\n \
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{season_name} → Name of the season\n \
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{audio} → Audio language of the video\n \
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{width} → Width of the video\n \
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{height} → Height of the video\n \
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{season_number} → Number of the season\n \
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{episode_number} → Number of the episode\n \
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{relative_episode_number} → Number of the episode relative to its season\n \
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{sequence_number} → Like '{episode_number}' but without possible non-number characters\n \
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{relative_sequence_number} → Like '{relative_episode_number}' but with support for episode 0's and .5's\n \
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{release_year} → Release year of the video\n \
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{release_month} → Release month of the video\n \
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{release_day} → Release day of the video\n \
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{series_id} → ID of the series\n \
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{season_id} → ID of the season\n \
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{episode_id} → ID of the episode")]
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#[arg(short, long, default_value = "{title}.mkv")]
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pub(crate) output: String,
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#[arg(help = "Name of the output file if the episode is a special")]
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#[arg(long_help = "Name of the output file if the episode is a special. \
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If not set, the '-o'/'--output' flag will be used as name template")]
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#[arg(long)]
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pub(crate) output_specials: Option<String>,
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#[arg(help = "Sanitize the output file for use with all operating systems. \
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This option only affects template options and not static characters.")]
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#[arg(long, default_value_t = false)]
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pub(crate) universal_output: bool,
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#[arg(help = "Video resolution")]
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#[arg(long_help = "The video resolution. \
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Can either be specified via the pixels (e.g. 1920x1080), the abbreviation for pixels (e.g. 1080p) or 'common-use' words (e.g. best). \
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Specifying the exact pixels is not recommended, use one of the other options instead. \
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Crunchyroll let you choose the quality with pixel abbreviation on their clients, so you might be already familiar with the available options. \
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The available common-use words are 'best' (choose the best resolution available) and 'worst' (worst resolution available)")]
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#[arg(short, long, default_value = "best")]
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#[arg(value_parser = crate::utils::clap::clap_parse_resolution)]
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pub(crate) resolution: Resolution,
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#[arg(
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help = "Sets the behavior of the stream merging. Valid behaviors are 'auto', 'audio' and 'video'"
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)]
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#[arg(
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long_help = "Because of local restrictions (or other reasons) some episodes with different languages does not have the same length (e.g. when some scenes were cut out). \
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With this flag you can set the behavior when handling multiple language.
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Valid options are 'audio' (stores one video and all other languages as audio only), 'video' (stores the video + audio for every language) and 'auto' (detects if videos differ in length: if so, behave like 'video' else like 'audio')"
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)]
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#[arg(short, long, default_value = "auto")]
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#[arg(value_parser = MergeBehavior::parse)]
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pub(crate) merge: MergeBehavior,
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#[arg(
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help = "If the merge behavior is 'auto', only download multiple video tracks if their length difference is higher than the given milliseconds"
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)]
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#[arg(long, default_value_t = 200)]
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pub(crate) merge_auto_tolerance: u32,
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#[arg(help = "Tries to sync the timing of all downloaded audios to match one video")]
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#[arg(
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long_help = "Tries to sync the timing of all downloaded audios to match one video. \
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This is done by downloading the first few segments/frames of all video tracks that differ in length and comparing them frame by frame. \
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The value of this flag determines how accurate the syncing is, generally speaking everything over 15 begins to be more inaccurate and everything below 6 is too accurate (and won't succeed). \
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If you want to provide a custom value to this flag, you have to set it with an equals (e.g. `--sync-start=10` instead of `--sync-start 10`). \
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When the syncing fails, the command is continued as if `--sync-start` wasn't provided for this episode
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"
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)]
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#[arg(long, require_equals = true, num_args = 0..=1, default_missing_value = "7.5")]
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pub(crate) sync_start: Option<f64>,
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#[arg(
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help = "Specified which language tagging the audio and subtitle tracks and language specific format options should have. \
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Valid options are: 'default' (how Crunchyroll uses it internally), 'ietf' (according to the IETF standard)"
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)]
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#[arg(
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long_help = "Specified which language tagging the audio and subtitle tracks and language specific format options should have. \
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Valid options are: 'default' (how Crunchyroll uses it internally), 'ietf' (according to the IETF standard; you might run in issues as there are multiple locales which resolve to the same IETF language code, e.g. 'es-LA' and 'es-ES' are both resolving to 'es')"
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)]
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#[arg(long)]
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#[arg(value_parser = LanguageTagging::parse)]
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pub(crate) language_tagging: Option<LanguageTagging>,
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#[arg(help = format!("Presets for converting the video to a specific coding format. \
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Available presets: \n {}", FFmpegPreset::available_matches_human_readable().join("\n ")))]
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#[arg(long_help = format!("Presets for converting the video to a specific coding format. \
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If you need more specific ffmpeg customizations you can pass ffmpeg output arguments instead of a preset as value. \
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Available presets: \n {}", FFmpegPreset::available_matches_human_readable().join("\n ")))]
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#[arg(long)]
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#[arg(value_parser = FFmpegPreset::parse)]
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pub(crate) ffmpeg_preset: Option<FFmpegPreset>,
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#[arg(
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help = "The number of threads used by ffmpeg to generate the output file. Does not work with every codec/preset"
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)]
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#[arg(
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long_help = "The number of threads used by ffmpeg to generate the output file. \
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Does not work with every codec/preset and is skipped entirely when specifying custom ffmpeg output arguments instead of a preset for `--ffmpeg-preset`. \
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By default, ffmpeg chooses the thread count which works best for the output codec"
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)]
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#[arg(long)]
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pub(crate) ffmpeg_threads: Option<usize>,
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#[arg(
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help = "Set which subtitle language should be set as default / auto shown when starting a video"
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)]
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#[arg(long)]
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pub(crate) default_subtitle: Option<Locale>,
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#[arg(help = "Include fonts in the downloaded file")]
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#[arg(long)]
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pub(crate) include_fonts: bool,
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#[arg(
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help = "Includes chapters (e.g. intro, credits, ...). Only works if `--merge` is set to 'audio'"
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)]
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#[arg(
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long_help = "Includes chapters (e.g. intro, credits, ...). . Only works if `--merge` is set to 'audio'. \
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Because chapters are essentially only special timeframes in episodes like the intro, most of the video timeline isn't covered by a chapter.
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These \"gaps\" are filled with an 'Episode' chapter because many video players are ignore those gaps and just assume that a chapter ends when the next chapter start is reached, even if a specific end-time is set.
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Also chapters aren't always available, so in this case, just a big 'Episode' chapter from start to end will be created"
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)]
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#[arg(long, default_value_t = false)]
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pub(crate) include_chapters: bool,
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#[arg(help = "Omit closed caption subtitles in the downloaded file")]
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#[arg(long, default_value_t = false)]
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pub(crate) no_closed_caption: bool,
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#[arg(help = "Skip files which are already existing by their name")]
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#[arg(long, default_value_t = false)]
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pub(crate) skip_existing: bool,
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#[arg(
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help = "Only works in combination with `--skip-existing`. Sets the method how already existing files should be skipped. Valid methods are 'audio' and 'subtitle'"
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)]
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#[arg(long_help = "Only works in combination with `--skip-existing`. \
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By default, already existing files are determined by their name and the download of the corresponding episode is skipped. \
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With this flag you can modify this behavior. \
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Valid options are 'audio' and 'subtitle' (if the file already exists but the audio/subtitle are less from what should be downloaded, the episode gets downloaded and the file overwritten).")]
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#[arg(long, default_values_t = SkipExistingMethod::default())]
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#[arg(value_parser = SkipExistingMethod::parse)]
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pub(crate) skip_existing_method: Vec<SkipExistingMethod>,
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#[arg(help = "Skip special episodes")]
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#[arg(long, default_value_t = false)]
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pub(crate) skip_specials: bool,
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#[arg(help = "Skip any interactive input")]
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#[arg(short, long, default_value_t = false)]
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pub(crate) yes: bool,
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#[arg(help = "The number of threads used to download")]
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#[arg(short, long, default_value_t = num_cpus::get())]
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pub(crate) threads: usize,
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#[arg(help = "Crunchyroll series url(s)")]
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#[arg(required = true)]
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pub(crate) urls: Vec<String>,
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}
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impl Execute for Archive {
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fn pre_check(&mut self) -> Result<()> {
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if !has_ffmpeg() {
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bail!("FFmpeg is needed to run this command")
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} else if PathBuf::from(&self.output)
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.extension()
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.unwrap_or_default()
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.to_string_lossy()
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!= "mkv"
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&& !is_special_file(&self.output)
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&& self.output != "-"
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{
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bail!("File extension is not '.mkv'. Currently only matroska / '.mkv' files are supported")
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} else if let Some(special_output) = &self.output_specials {
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if PathBuf::from(special_output)
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.extension()
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.unwrap_or_default()
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.to_string_lossy()
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!= "mkv"
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&& !is_special_file(special_output)
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&& special_output != "-"
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{
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bail!("File extension for special episodes is not '.mkv'. Currently only matroska / '.mkv' files are supported")
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}
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}
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if self.include_chapters
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&& !matches!(self.merge, MergeBehavior::Audio)
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&& self.sync_start.is_none()
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{
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bail!("`--include-chapters` can only be used if `--merge` is set to 'audio' or `--sync-start` is set")
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}
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if !matches!(self.merge, MergeBehavior::Auto) && self.sync_start.is_some() {
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bail!("`--sync-start` can only be used if `--merge` is set to `auto`")
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}
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if self.sync_start.is_some() && self.ffmpeg_preset.is_none() {
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warn!("Using `--sync-start` without `--ffmpeg-preset` might produce worse sync results than with `--ffmpeg-preset` set")
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}
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self.audio = all_locale_in_locales(self.audio.clone());
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self.subtitle = all_locale_in_locales(self.subtitle.clone());
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if let Some(language_tagging) = &self.language_tagging {
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self.audio = resolve_locales(&self.audio);
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self.subtitle = resolve_locales(&self.subtitle);
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self.output_audio_locales = language_tagging.convert_locales(&self.audio);
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self.output_subtitle_locales = language_tagging.convert_locales(&self.subtitle);
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} else {
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self.output_audio_locales = self
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.audio
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.clone()
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.into_iter()
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.map(|l| l.to_string())
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.collect();
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self.output_subtitle_locales = self
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.subtitle
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.clone()
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.into_iter()
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.map(|l| l.to_string())
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.collect();
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}
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Ok(())
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}
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async fn execute(self, ctx: Context) -> Result<()> {
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if !ctx.crunchy.premium().await {
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warn!("You may not be able to download all requested videos when logging in anonymously or using a non-premium account")
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}
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let mut parsed_urls = vec![];
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for (i, url) in self.urls.clone().into_iter().enumerate() {
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let progress_handler = progress!("Parsing url {}", i + 1);
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match parse_url(&ctx.crunchy, url.clone(), true).await {
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Ok((media_collection, url_filter)) => {
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progress_handler.stop(format!("Parsed url {}", i + 1));
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parsed_urls.push((media_collection, url_filter))
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}
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Err(e) => bail!("url {} could not be parsed: {}", url, e),
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};
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}
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for (i, (media_collection, url_filter)) in parsed_urls.into_iter().enumerate() {
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let progress_handler = progress!("Fetching series details");
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let single_format_collection = ArchiveFilter::new(
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url_filter,
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self.clone(),
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!self.yes,
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self.skip_specials,
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ctx.crunchy.premium().await,
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)
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.visit(media_collection)
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.await?;
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if single_format_collection.is_empty() {
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progress_handler.stop(format!("Skipping url {} (no matching videos found)", i + 1));
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continue;
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}
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progress_handler.stop(format!("Loaded series information for url {}", i + 1));
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single_format_collection.full_visual_output();
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let download_builder =
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DownloadBuilder::new(ctx.client.clone(), ctx.rate_limiter.clone())
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.default_subtitle(self.default_subtitle.clone())
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.download_fonts(self.include_fonts)
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.ffmpeg_preset(self.ffmpeg_preset.clone().unwrap_or_default())
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.ffmpeg_threads(self.ffmpeg_threads)
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.output_format(Some("matroska".to_string()))
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.audio_sort(Some(self.audio.clone()))
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.subtitle_sort(Some(self.subtitle.clone()))
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.no_closed_caption(self.no_closed_caption)
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.sync_start_value(self.sync_start)
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.threads(self.threads)
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.audio_locale_output_map(
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zip(self.audio.clone(), self.output_audio_locales.clone()).collect(),
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)
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.subtitle_locale_output_map(
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zip(self.subtitle.clone(), self.output_subtitle_locales.clone()).collect(),
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);
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for single_formats in single_format_collection.into_iter() {
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let (download_formats, mut format) = get_format(&self, &single_formats).await?;
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let mut downloader = download_builder.clone().build();
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for download_format in download_formats {
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downloader.add_format(download_format)
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}
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let formatted_path = if format.is_special() {
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format.format_path(
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self.output_specials
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.as_ref()
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.map_or((&self.output).into(), |so| so.into()),
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self.universal_output,
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self.language_tagging.as_ref(),
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)
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} else {
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format.format_path(
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(&self.output).into(),
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self.universal_output,
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self.language_tagging.as_ref(),
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)
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};
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let (mut path, changed) = free_file(formatted_path.clone());
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if changed && self.skip_existing {
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let mut skip = true;
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if !self.skip_existing_method.is_empty() {
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if let Some((audio_locales, subtitle_locales)) =
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get_video_streams(&formatted_path)?
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{
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let method_audio = self
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.skip_existing_method
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.contains(&SkipExistingMethod::Audio);
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let method_subtitle = self
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.skip_existing_method
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.contains(&SkipExistingMethod::Subtitle);
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let audio_differ = if method_audio {
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format
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.locales
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.iter()
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.any(|(a, _)| !audio_locales.contains(a))
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} else {
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false
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};
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let subtitle_differ = if method_subtitle {
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format
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.locales
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.clone()
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.into_iter()
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.flat_map(|(a, mut s)| {
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// remove the closed caption if the flag is given to omit
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// closed captions
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if self.no_closed_caption && a != Locale::ja_JP {
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s.retain(|l| l != &a)
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}
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s
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})
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.any(|l| !subtitle_locales.contains(&l))
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} else {
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false
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};
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if (method_audio && audio_differ)
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|| (method_subtitle && subtitle_differ)
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{
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skip = false;
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path = formatted_path.clone()
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}
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}
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}
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if skip {
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debug!(
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"Skipping already existing file '{}'",
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formatted_path.to_string_lossy()
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);
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continue;
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}
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}
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format.locales.sort_by(|(a, _), (b, _)| {
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self.audio
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.iter()
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.position(|l| l == a)
|
|
.cmp(&self.audio.iter().position(|l| l == b))
|
|
});
|
|
for (_, subtitles) in format.locales.iter_mut() {
|
|
subtitles.sort_by(|a, b| {
|
|
self.subtitle
|
|
.iter()
|
|
.position(|l| l == a)
|
|
.cmp(&self.subtitle.iter().position(|l| l == b))
|
|
})
|
|
}
|
|
|
|
format.visual_output(&path);
|
|
|
|
downloader.download(&path).await?
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Debug, Eq, PartialEq)]
|
|
pub(crate) enum SkipExistingMethod {
|
|
Audio,
|
|
Subtitle,
|
|
}
|
|
|
|
impl Display for SkipExistingMethod {
|
|
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
|
|
let value = match self {
|
|
SkipExistingMethod::Audio => "audio",
|
|
SkipExistingMethod::Subtitle => "subtitle",
|
|
};
|
|
write!(f, "{}", value)
|
|
}
|
|
}
|
|
|
|
impl SkipExistingMethod {
|
|
fn parse(s: &str) -> Result<Self, String> {
|
|
match s.to_lowercase().as_str() {
|
|
"audio" => Ok(Self::Audio),
|
|
"subtitle" => Ok(Self::Subtitle),
|
|
_ => Err(format!("invalid skip existing method '{}'", s)),
|
|
}
|
|
}
|
|
|
|
fn default<'a>() -> &'a [Self] {
|
|
&[]
|
|
}
|
|
}
|
|
|
|
async fn get_format(
|
|
archive: &Archive,
|
|
single_formats: &Vec<SingleFormat>,
|
|
) -> Result<(Vec<DownloadFormat>, Format)> {
|
|
let mut format_pairs = vec![];
|
|
let mut single_format_to_format_pairs = vec![];
|
|
|
|
for single_format in single_formats {
|
|
let stream = single_format.stream().await?;
|
|
let Some((video, audio, _)) =
|
|
stream_data_from_stream(&stream, &archive.resolution, None).await?
|
|
else {
|
|
if single_format.is_episode() {
|
|
bail!(
|
|
"Resolution ({}) is not available for episode {} ({}) of {} season {}",
|
|
archive.resolution,
|
|
single_format.episode_number,
|
|
single_format.title,
|
|
single_format.series_name,
|
|
single_format.season_number,
|
|
)
|
|
} else {
|
|
bail!(
|
|
"Resolution ({}) is not available for {} ({})",
|
|
archive.resolution,
|
|
single_format.source_type(),
|
|
single_format.title
|
|
)
|
|
}
|
|
};
|
|
|
|
let subtitles: Vec<(Subtitle, bool)> = archive
|
|
.subtitle
|
|
.iter()
|
|
.flat_map(|s| {
|
|
let subtitles = stream
|
|
.subtitles
|
|
.get(s)
|
|
.cloned()
|
|
// the subtitle is probably not cc if the audio is japanese or more than one
|
|
// subtitle exists for this stream
|
|
.map(|l| {
|
|
(
|
|
l,
|
|
single_format.audio == Locale::ja_JP || stream.subtitles.len() > 1,
|
|
)
|
|
});
|
|
let cc = stream.captions.get(s).cloned().map(|l| (l, false));
|
|
|
|
subtitles
|
|
.into_iter()
|
|
.chain(cc.into_iter())
|
|
.collect::<Vec<(Subtitle, bool)>>()
|
|
})
|
|
.collect();
|
|
|
|
format_pairs.push((single_format, video.clone(), audio, subtitles.clone()));
|
|
single_format_to_format_pairs.push((single_format.clone(), video, subtitles))
|
|
}
|
|
|
|
let mut download_formats = vec![];
|
|
|
|
match archive.merge {
|
|
MergeBehavior::Video => {
|
|
for (single_format, video, audio, subtitles) in format_pairs {
|
|
download_formats.push(DownloadFormat {
|
|
video: (video, single_format.audio.clone()),
|
|
audios: vec![(audio, single_format.audio.clone())],
|
|
subtitles,
|
|
metadata: DownloadFormatMetadata { skip_events: None },
|
|
})
|
|
}
|
|
}
|
|
MergeBehavior::Audio => download_formats.push(DownloadFormat {
|
|
video: (
|
|
format_pairs.first().unwrap().1.clone(),
|
|
format_pairs.first().unwrap().0.audio.clone(),
|
|
),
|
|
audios: format_pairs
|
|
.iter()
|
|
.map(|(single_format, _, audio, _)| (audio.clone(), single_format.audio.clone()))
|
|
.collect(),
|
|
// mix all subtitles together and then reduce them via a map so that only one subtitle
|
|
// per language exists
|
|
subtitles: format_pairs
|
|
.iter()
|
|
.flat_map(|(_, _, _, subtitles)| subtitles.clone())
|
|
.collect(),
|
|
metadata: DownloadFormatMetadata {
|
|
skip_events: if archive.include_chapters {
|
|
format_pairs.first().unwrap().0.skip_events().await?
|
|
} else {
|
|
None
|
|
},
|
|
},
|
|
}),
|
|
MergeBehavior::Auto => {
|
|
let mut d_formats: Vec<(Duration, DownloadFormat)> = vec![];
|
|
|
|
for (single_format, video, audio, subtitles) in format_pairs {
|
|
let closest_format = d_formats.iter_mut().min_by(|(x, _), (y, _)| {
|
|
x.sub(single_format.duration)
|
|
.abs()
|
|
.cmp(&y.sub(single_format.duration).abs())
|
|
});
|
|
|
|
match closest_format {
|
|
Some(closest_format)
|
|
if closest_format
|
|
.0
|
|
.sub(single_format.duration)
|
|
.abs()
|
|
.num_milliseconds()
|
|
< archive.merge_auto_tolerance.into() =>
|
|
{
|
|
// If less than `audio_error` apart, use same audio.
|
|
closest_format
|
|
.1
|
|
.audios
|
|
.push((audio, single_format.audio.clone()));
|
|
closest_format.1.subtitles.extend(subtitles);
|
|
}
|
|
_ => {
|
|
d_formats.push((
|
|
single_format.duration,
|
|
DownloadFormat {
|
|
video: (video, single_format.audio.clone()),
|
|
audios: vec![(audio, single_format.audio.clone())],
|
|
subtitles,
|
|
metadata: DownloadFormatMetadata {
|
|
skip_events: if archive.include_chapters {
|
|
single_format.skip_events().await?
|
|
} else {
|
|
None
|
|
},
|
|
},
|
|
},
|
|
));
|
|
}
|
|
};
|
|
}
|
|
|
|
for (_, d_format) in d_formats.into_iter() {
|
|
download_formats.push(d_format);
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok((
|
|
download_formats,
|
|
Format::from_single_formats(single_format_to_format_pairs),
|
|
))
|
|
}
|
|
|
|
fn get_video_streams(path: &Path) -> Result<Option<(Vec<Locale>, Vec<Locale>)>> {
|
|
let video_streams =
|
|
Regex::new(r"(?m)Stream\s#\d+:\d+\((?P<language>.+)\):\s(?P<type>(Audio|Subtitle))")
|
|
.unwrap();
|
|
|
|
let ffmpeg = Command::new("ffmpeg")
|
|
.stdout(Stdio::null())
|
|
.stderr(Stdio::piped())
|
|
.arg("-hide_banner")
|
|
.args(["-i", &path.to_string_lossy()])
|
|
.output()?;
|
|
let ffmpeg_output = String::from_utf8(ffmpeg.stderr)?;
|
|
|
|
let mut audio = vec![];
|
|
let mut subtitle = vec![];
|
|
for cap in video_streams.captures_iter(&ffmpeg_output) {
|
|
let locale = cap.name("language").unwrap().as_str();
|
|
let type_ = cap.name("type").unwrap().as_str();
|
|
|
|
match type_ {
|
|
"Audio" => audio.push(Locale::from(locale.to_string())),
|
|
"Subtitle" => subtitle.push(Locale::from(locale.to_string())),
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
if audio.is_empty() && subtitle.is_empty() {
|
|
Ok(None)
|
|
} else {
|
|
Ok(Some((audio, subtitle)))
|
|
}
|
|
}
|