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

[Carl Eugen Hoyos]

Am Do., 16. Apr. 2020 um 19:50 Uhr schrieb MediaMouth <communque at gmail.com>:

> 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.

Carl Eugen