Re: ffmpeg

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On 6/21/2022 6:22 PM, Samuel Sieb wrote:
On 6/21/22 15:15, Bill Cunningham wrote:
     Does this show anything? And, I did try webm and it worked fine. IDK which is the smaller file, webm or mp4. I usually watch this stuff with vlc on windows or an OS using vlc.

I tried ffmpeg -formats mp4 -i re.iso re.mp4,

[mpeg4_v4l2m2m @ 0x55caf16f2dc0] Could not find a valid device
[mpeg4_v4l2m2m @ 0x55caf16f2dc0] can't configure encoder

This is still your original problem which I explained to you then.  That is a hardware encoder and you don't have whatever hardware it's looking for.  You have to use "-vcodec" to select a different encoder.

Try "-vcodec libopenh264" since you're still using ffmpeg from the Fedora repo.

OK wow well this is new,

  libpostproc    56.  3.100 / 56.  3.100
[NULL @ 0x5599ce560c40] non-existing PPS 4 referenced
[NULL @ 0x5599ce560c40] non-existing PPS 0 referenced
[extract_extradata @ 0x5599ce565c80] Invalid NAL unit 0, skipping.
    Last message repeated 4 times
[libopenh264 @ 0x5599ce560c40] [OpenH264] this = 0x0x5599ce568800, Warning:parse_nal(), no exist Sequence Parameter Sets ahead of sequence when try to decode NAL(type:0). [libopenh264 @ 0x5599ce560c40] [OpenH264] this = 0x0x5599ce568800, Warning:parse_nal(), no exist Sequence Parameter Sets ahead of sequence when try to decode NAL(type:1).
[libopenh264 @ 0x5599ce560c40] DecodeFrame failed
    Last message repeated 1 times
[libopenh264 @ 0x5599ce560c40] SEI type 27 size 1984 truncated at 1904
[libopenh264 @ 0x5599ce560c40] sps_id 0 out of range
[libopenh264 @ 0x5599ce560c40] non-existing PPS 3 referenced
[libopenh264 @ 0x5599ce560c40] missing picture in access unit with size 27
[libopenh264 @ 0x5599ce560c40] non-existing PPS 3 referenced
[extract_extradata @ 0x5599ce565c80] Invalid NAL unit 0, skipping.
[libopenh264 @ 0x5599ce560c40] [OpenH264] this = 0x0x5599ce568800, Warning:SPS ID can not be supported!

...

And just keeps going. Thanks for helping anyway.

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