$ ffprobe -show_frames _/5.mp4 |& tail -n 30 | egrep 'time|duration|FRAME|type' Please either change the exit status to something non-zero because this is obviously a failure or fix the underlying bug where it doesn't understand the video file correctly. Please do not tell me "just use -loop 1", this is a user generated content site and as I said -loop 1 is a waste of filesize with no benefit because all players (even ffplay) understand it correctly, only ffmpeg doesn't. What's even more annoying is it exits with 0 so I can't even detect there was an error and then run the command again with -ss 0. Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) However, my thumbnailing routine does this command (log attached):įfmpeg -y -strict -2 -ss 10 -i one-frame-webm-bug.webm -an -vframes 1 -f mjpeg -vf scale=255:-1 test.jpgįfmpeg fails because it's asking for frame 10 when only frame 0 was specified. loop 1 is not necessary and just a waste of filesize.
They display the image and then play the audio while leaving the image up for the entirety of the video.
One-frame-webm-bug.webm ( uploaded to FTP, also available at ) was generated with the command:įfmpeg -i shot0002.jpg -i happening.aac one-frame-webm-bug.webmīrowsers (Chrome and Firefox) understand this just fine. Therefore, many users have come up with tricks and codec parameters to tune their files to try to get them to be under the limit. I own a site (8ch.net) where users are allowed to upload arbitrary WEBM (VP9/Opus or VP8/vorbis) and MP4 (H264/AAC only) files so long as they are under 8MB.
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