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

[MediaMouth]

> 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?