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Broken video on commons for cyclical dependencies talk
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Description

I remember participating to the cyclical dependencies talk a while ago, and now I'd like to rewatch the video on commons. However, the file seems empty / broken.

Could someone please take a look and re-upload it? Thanks!

P.S. I hope these are the right tags!

Event Timeline

Hmm, both https://lists.wikimedia.org/pipermail/wikitech-l/2019-July/092277.html and the Google calendar item don't list a Youtube link but only the Google Hangout link. Not sure there is a recording somewhere left (or what went wrong on Commons). @Jrbranaa, @daniel: Anyone remembering anything?

https://www.mediawiki.org/wiki/Code_Health/office-hours links to the video on commons, so I believe something went wrong while uploading.

Hmm, both https://lists.wikimedia.org/pipermail/wikitech-l/2019-July/092277.html and the Google calendar item don't list a Youtube link but only the Google Hangout link. Not sure there is a recording somewhere left (or what went wrong on Commons).

@Jrbranaa, @daniel: ping?

@Aklapper and @Daimona, I'll take a look. If I recall correctly there were some challenges getting it encoded into a Commons-supported format.

@Jrbranaa: If you have the "source" video file somewhere accessible for me I can also take a look into re-encoding and reuploading etc (done that before)

Aklapper closed this task as Resolved.EditedApr 1 2020, 10:02 AM
Aklapper claimed this task.

Filename of broken file on Commons ends with .ogv so I had to also upload in that format. Video content only shows people talking but no slides etc.

MP4 input file size:  298624178       (H264; 1280x720, 584 kb/s, 30 fps)
ffmpeg -i CircularDependencies.mp4 -c:v libtheora -q:v 9 -c:a libvorbis -q:a 2 CircularDependencies.ogv
Output file size:    1068380307       (same quality parameters as MP4)
ffmpeg -i CircularDependencies.mp4 -c:v libvpx-vp9 -c:a libopus -b:a 32k CircularDependencies.webm
Output file size:     100855762       (same quality parameters as MP4)
ffmpeg -i CircularDependencies.mp4 -c:v libtheora -q:v 1 -b:v 0.2M -c:a libvorbis -q:a 2 -filter:v scale=320x180 CircularDependencies2.ogv
Output file size:      44504069       (worse video bitrate and size parameters)

Hence I (re)uploaded the last video, intentionally with horrible video quality and good audio to keep file size small given the OGV format constraint.

I recommend VP9 Webm for the future (see comparison above). Or even better, AV1.