kcwebm

Quick video to webm converter. Uses FFMPEG. Originally developed for Krautchan.

Simple python script.

Krautchan.net

kcwebm.py -s 10 -x9 videofile

will produce "good" quality webms for Krautchan

kcwebm.py -s 10 -x8 videofile

will produce "fast" webms (short encoding time).

4chan

kcwebm.py -s 3 -a -x8 videofile

will be fine for 4chan.

zshrc and bashrc

You can add the function in zshrc.aliases.addon to your zshrc (or bashrc, untested) setup and then run kcwebmdl and it will download and convert your youtube video (the URL has to be in your CTRL+C clipboard) to the _WEBMDIR directory. If you execute "kcwebmdl 480" for example instead, it will convert that video to 480p. This also always uses the libvpx-vp9 (VP9) codec.

Obviously you will have to edit _WEBMDIR to a directory to a directory that suits you.

Also youtube-dl and xsel have to be installed.

Full help output

Full --help output:

usage: kcwebm.py [-h] [-s SIZE | -b BITRATE] [-r RESIZE] [-x {8,9}] [-a] [-1] [-c] [-f FRAMERATE] [--cfac CFAC] video

positional arguments:
  video                 The video file to be converted.

optional arguments:
  -h, --help            show this help message and exit
  -s SIZE, --size SIZE  Target size of the new video in MB (approximate).
  -b BITRATE, --bitrate BITRATE
                        Target bitrate in k of the video (approximate). This implies --onepass.
  -r RESIZE, --resize RESIZE
                        Resize video to this height. Aspect ratio will be kept.
  -x {8,9}, --vpxversion {8,9}
                        8 for VP8 (default), or 9 for VP9.
  -a, --noaudio         Disable audio completely.
  -1, --onepass         Disable two-pass encoding.
  -c, --commandonly     Output ffmpeg commands only.
  -f FRAMERATE, --framerate FRAMERATE
                        Specify framerate.
  --cfac CFAC           Correction factor to account for headers, containers, jitter. Must be between 0 and 0.3. Default is 0.05. Increase if videos get too large.