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MP4 videos encoded with H264 say "Video can't be played because the file is corrupt"

  • 2 àwọn èsì
  • 1 ní ìṣòro yìí
  • 588 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ Denis

astrojuanlu
astrojuanlu
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I routinely record short screencasts with Kazam, and I can't watch my own videos after posting them on sites like GitHub because Firefox says "Video can't be played because the file is corrupt". Or for example when I upload them to sites like ezgif to convert them to a GIF, which works just fine because, well, the file is not corrupt. Other browsers like Chromium play them just fine.

Apparently the "OpenH264 Video Codec provided by Cisco Systems, Inc" is properly enabled in my system. This has been happening to me for months or years, but only today I decided to open a thread here.

There are two things here:

1. Firefox can't play the file. I'm sure there's some sort of misconfiguration on my side, or bad defaults, or a missing plugin, or similar. 2. Firefox shows a misleading message. The file is not corrupt! The root cause is something else.

Any advice on how to fix the first one?

I routinely record short screencasts with [https://launchpad.net/kazam Kazam], and I can't watch my own videos after posting them on sites like GitHub because Firefox says "Video can't be played because the file is corrupt". Or for example when I upload them to sites like ezgif to convert them to a GIF, which works just fine because, well, the file is not corrupt. Other browsers like Chromium play them just fine. Apparently the "OpenH264 Video Codec provided by Cisco Systems, Inc" is properly enabled in my system. This has been happening to me for months or years, but only today I decided to open a thread here. There are two things here: 1. Firefox can't play the file. I'm sure there's some sort of misconfiguration on my side, or bad defaults, or a missing plugin, or similar. 2. Firefox shows a misleading message. The file is not corrupt! The root cause is something else. Any advice on how to fix the first one?
Ìsopọ̀ yíyà aṣàfihàn

Ọ̀nà àbáyọ tí a yàn

Kazam records h264 in yuv444 which isn't supported. Convert video with ffmpeg: ffmpeg -i in.mp4 -pix_fmt yuv420p -c:a copy -movflags +faststart out.mp4

Ka ìdáhùn ni ìṣètò kíkà 👍 1

All Replies (2)

astrojuanlu
astrojuanlu Ìbéèrè olóhun
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Sorry, failed to provide links: see https://github.com/orchest/orchest/pull/1039#issue-1266073238 for example.

Denis
Denis
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Ọ̀nà àbáyọ Tí a Yàn

Kazam records h264 in yuv444 which isn't supported. Convert video with ffmpeg: ffmpeg -i in.mp4 -pix_fmt yuv420p -c:a copy -movflags +faststart out.mp4

Ti ṣàtúnṣe nípa Denis