Kagami / Webm.py
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🎞 Cross-platform command-line WebM converter
Stars: ✠93
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python
139335 projects - #7 most used programming language
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webm.py 
Cross-platform command-line WebM converter.
Features
- No Python dependencies, single source file
- Supports encoding to VP8, VP9 and AV1, with Opus or Vorbis
- 2-pass encoding, user-friendly defaults, flexible set of options
- Provides graphical interactive mode to cut/crop input video with mpv
- Can burn subtitles, fit to limit, use external audio track and many more
Requirements
- Python 2.7+ or 3.2+
- FFmpeg 2+ compiled with libvpx and libopus
- mpv 0.17+ compiled with Lua support, for interactive mode only
Make sure to set Add to PATH option in Python for Windows installer.
FFmpeg and mpv executables must be in PATH or set their location with
WEBM_FFMPEG and WEBM_MPV environment variables.
Installation
pip install webm
Or just save https://raw.githubusercontent.com/Kagami/webm.py/master/webm.py
and put in your PATH.
Windows, Python 2 and non-ASCII filenames
Unicode filenames won't work on Windows with Python 2 due to Python bugs. Use
Python 3 if you can but if not an option set PYTHONIOENCODING environment
variable to utf-8 and run:
pip install subprocessww
Usage
Show help:
webm -h
Examples:
# VP9 with default quality
webm -i in.mkv
# Fit to 10 megabytes
webm -i in.mkv -l 10
# Set 1000kbps video bitrate
webm -i in.mkv -vb 1000
# Change quality
webm -i in.mkv -crf 20
# Encode to AV1
webm -i in.mkv -av1
# Encode to VP8 & Vorbis
webm -i in.mkv -vp8
Interactive mode
Pass -p flag to interactively select cut frargment and crop area with mpv.
Show help for interactive mode:
webm -hi
Related links
webm.py wiki contains some encoding tricks and links to documentation on WebM/VPx.
License
webm.py is licensed under CC0.
Note that the project description data, including the texts, logos, images, and/or trademarks,
for each open source project belongs to its rightful owner.
If you wish to add or remove any projects, please contact us at [email protected].