[FFmpeg-user] Testing transcode speeds on Raspberry Pi 4

MediaMouth communque at gmail.com
Fri Apr 17 01:02:01 EEST 2020

> On Apr 16, 2020, at 2:26 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>> The following worked w/o errors (though it didn't improve the speed)
>>        ffmpeg -y -i SourcePath -s 1280*720 -b:v 9000k -c:v h264_omx DestPath
>> The following generated the "deprecated pixel format used" error.
> No.
> ("deprecated pixel format used" is not an error.)
>>        ffmpeg -y -i SourcePath -b:v 9000k -c:v h264_omx DestPath
>> The difference is the -s flag.  Why would leaving that out result in an error?
> I guess your hardware does not support 4k encoding.

So you're saying the RPI seems capable of decoding 4k but not encoding.
Did I get that correct?

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