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incorrect error message for MP4 video

  • 3 replies
  • 1 has this problem
  • Last reply by cor-el

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I am using Firefox Browser 92.0 (64 bit) for Ubuntu Canonical 1.0 I am running Ubuntu on ACER laptop uname -a Linux aneesa-Aspire-5733Z 5.11.0-34-generic #36~20.04.1-Ubuntu SMP Fri Aug 27 08:06:32 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

When I try to open an MP4 video, it gives wrong message 'Video can't be played because the file is corrupt' whereas it plays absolutely fine on Google Chrome. Both screenshots attached.

I provide this link to my 1 minute video.

ffmpeg is installed. I created my video using it.

Please help me. Thank you

Attached screenshots

All Replies (3)

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Please read

For future reference for people who stumble upon this Firefox bug, the solution is to add "-pix_fmt yuv420p" in your ffmpeg command line.

Modified by TyDraniu


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Thank you. I read the entire link that you sent. I struggled trying many many different things that I read which were supposed to work but did not. I think that ffmpeg is under development and constantly changing. And that the documentation states aspirational goals.

So I decided to use OLD reliable software. My solution: (a) I copied my 1 PNG image and 1 MP3 music files to my old desktop running Windows XP (not connected to Internet) . (b) I used Windows MovieMaker software to create a 1-minute WMV video (c) I copied my 1 1-minute WMV video over to my Ubuntu desktop (d) I used to convert my WMV video to MP4.

The resulting MP4 video works fine on Mozilla Firefox, Google Chrome, Apple Safari and Ubuntu Videos. You can view it at:

Thank you for trying to help ! I appreciate your time and effort. Feel free to use my video to fix the bug.


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Note that the Web Console shows an error message:

Decoder may not have the capability to handle the requested video format with YUV444 chroma subsampling. ZahidMenu.mp4


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