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 Well I did install from rpmfusion a package that included enc, and I seem to still have the problem. I have this installed,

openh264-2.2.0-1.fc36.x86_64
x264-libs-0.163-6.20210613git5db6aa6.fc36.x86_64
x264-devel-0.163-6.20210613git5db6aa6.fc36.x86_64
x264-0.163-6.20210613git5db6aa6.fc36.x86_64
openh264-devel-2.2.0-1.fc36.x86_64
h264enc-10.4.7-13.fc36.noarch

The one above has a file called "enc".  I will keep looking, thanks for the help!

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