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Re-add concat info to --help (#537)

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redzic 2022-01-16 15:03:59 -06:00 committed by GitHub
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av1an-cli/src/lib.rs
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@ -330,6 +330,18 @@ pub struct CliOpts {
#[clap(long, help_heading = "ENCODING")]
pub photon_noise: Option<u8>,
/// Determines method used for concatenating encoded chunks and audio into output file
///
/// ffmpeg - Uses ffmpeg for concatenation. Unfortunately, ffmpeg sometimes produces files
/// with partially broken audio seeking, so mkvmerge should generally be preferred if available.
/// ffmpeg concatenation also produces broken files with the --enable-keyframe-filtering=2 option
/// in aomenc, so it is disabled if that option is used. However, ffmpeg can mux into formats other
/// than matroska (.mkv), such as WebM. To output WebM, use a .webm extension in the output file.
///
/// mkvmerge - Generally the best concatenation method (as it does not have either of the
/// aforementioned issues that ffmpeg has), but can only produce matroska (.mkv) files. Requires mkvmerge
/// to be installed.
///
/// ivf - Experimental concatenation method implemented in av1an itself to concatenate to an ivf
/// file (which only supports VP8, VP9, and AV1, and does not support audio).
#[clap(short, long, possible_values = &["ffmpeg", "mkvmerge", "ivf"], default_value_t = ConcatMethod::FFmpeg, help_heading = "ENCODING")]