jiffy
A wrapper for ffmpeg that runs multiple jobs at the same time. This program is meant to handle many types of videos while containing the most commonly used options. The main encoders used are AOMedia AV1 and x265.
Usage: jiffy [OPTIONS] [VIDEO_ROOT]
Arguments:
[VIDEO_ROOT] Encode the videos in this directory. By default, encode in the current directory. Output
files are put in "video_root/encoded". If the given path ends in "encoded", the real video
root is taken to be the parent directory.
Options:
--crf <CRF> Set the quality level (for either encoded). The default is 24 for AV1 and 22 for H265, but
if unspecified, a better CRF may be used for small videos, or a lower quality CRF may be
used for animation.
--x265 Use x265 instead of aom-av1. This is true by default with --animation.
--reference Use x264 to make a high quality (high space) fast encode.
--av1 Use libaom-av1 for encoding. This is the default, except for animation.
--animation Use settings that work well for anime or animation.
--anime-slow-well-lit Use this setting for slow well lit anime, like slice of life:
--anime-mixed-dark-battle Use this setting for anime with some dark scenes, some battle scenes (shonen, historical, etc.)
-j, --jobs <JOBS> Encode this many videos in parallel. The default varies per encoder.
--720p Encode as 720p. Otherwise the video will be 1080p. The source size is taken into
consideration; in no case is a video scaled up.
--8-bit Encode as 8-bit. Otherwise the video will be 10-bit.
--preset <PRESET> The encoding preset to use--by default this is fairly slow. By default, "6" for libaom,
"slow" for x265.
--overwrite Overwrite existing output files
--extra-flag <EXTRA_FLAG> Add additional ffmpeg flags, such as "-to 5:00" to quickly test the first few minutes of a
file. Each option should be passed separately, for example:
`jiffy --extra-flag='-ss 30' --extra-flag='-t 5:00'`
-n, --no-log Don't write log files for each ffmpeg invocation. This avoids polluting your output
directory with a log file per input.
--skip-bitrate-check Don't check if the audio streams are within acceptable limits--just reencode them (unless
`--copy-audio` was specified). This saves a little time in some circumstances.
--copy-audio Keep the audio stream unchanged. This is useful if audio bitrate can't be determined.
--copy-streams Copy audio and video streams (don't encode). Used for testing, for example passing
`--copy-streams --extra-flag='-to 30'` would copy a 30 second from each video. Implies
`--copy-audio`.
--no-audio For testing and benchmarking.
--exclude <EXCLUDE> Paths (usually glob patterns) that can be excluded. They match from the video encode root.
For example, "*S01*/*E01*" might be used to skip the first episode of a TV show, and
"**/*E01*" would skip the first episode of each season. This argument must be given once
per exclude pattern. See the `--include` option.
--include <INCLUDE> Paths (usually glob patterns) to be included; all others are excluded. They match from the
video encode root. If `--include` and `--exclude` are both given, only those that are
matched by the include globs and not matched by the exclude globs will be encoded. See the
`--exclude` option.
--no-map-0 Run ffmpeg without `-map 0`. This occasionally fixes an encoding error.
--limit <LIMIT> Encode a certain number of files, then stop.
--for-tv Make a high quality but inefficient file for low spec televisions. The output is intended
for watching, not for archival purposes. This is the only option that encodes with x264.
Subtitles are hard-coded if available. These files should be compatible with Chromecast
without the need for transcoding.
-h, --help Print help information
Environment variables
Extra flags for ffmpeg can also be passed in the FFMPEG_FLAGS environment variable.
Per-video flags can be set as well, so settings per video will be remembered. (It is
best to store these files in a wrapper for jiffy so as to not pollute your
shell init with video configurations.)
The video-specific environment variables can be FFMPEG_video_name and VF_video_name for general ffmpeg
flags and -vf flags respectively.
Note that non-alphanumeric characters and leading numbers should be replaced by "_". Examples:
FFMPEG_video_20200104_mp4="--enable-dnl-denoising=0 --denoise-noise-level=8"
FFMPEG_video_20220101_mp4="-ss 15 -to 2:30" VF_video_20220101_mp4="eq=brightness=0.06:saturation=2"
VF_video_20200104_mp4=hflip,vflip,bwdif
Installation
After Rust is installed, run:
cargo install --git https://github.com/lefth/jiffy
Quirks
The output filename is currently hard coded to: input-filename-crf<CRF>.mp4
(or .mkv), or input-filename-<PROFILE>-crf<CRF>.mp4 for AV1 videos. This
helps distinguish between encodes and originals, but it's not beautiful.
It would be ideal to configure the output filename based on a template in a
config file or environment variable formatted like the following:
{INPUT_FILENAME_STEM}-{PROFILE}.{EXTENSION}. Patches are welcome.
Symlinks within the encode directory are not handled intelligently. The same video can end up being encoded multiple times. Ideally symlinks should be dereferenced if they point outside the video directory, and transformed if they point within the video directory.
See also
https://github.com/Alkl58/NotEnoughAV1Encodes https://github.com/master-of-zen/Av1an