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4 thumbnails not working

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by omniplex (Posted Sat Apr 02, 2016 12:15 pm)
Inspired by this thread I checked that commons has the Big Buck Bunny, and in fact they have an 93 MB medium bitrate OGV (Ogg Video) created six years ago with ffmpeg2theora. Because that might be not state of the art (wrt video format conversions) I also checked what YouTube"offers for download" with one of those sites listing the download links for a given YouTube URL. Then I downloaded the biggest WEBM video + WEBA audio, planning to mux it with FFmpeg and upload the result to commons as alternative medium bitrate WEBM (video+audio), after all the license should be okay.

Something with Big Buck Bunny might be hard for thumbnails, Windows explorer crashes when I try to rename BBB, and the Media Preview configuration test page (based on a 2014 FFmpeg libav) is unresponsive for BBB. It works for almost all video formats on my box (+ several image formats not handled by other thumbnail generators not limited to XnView.) Maybe BBB is a special case, if we trust that a WEBM as found on YouTube is by definition a good WEBM.

P.S. some hours later, commons also had the 2.76 GB Big Buck Bunny 4K.webm, but I didn't try to download it. :wink: Now they also have a 88.88 MB WEBM alternative.

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