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

Carl Eugen Hoyos ceffmpeg at gmail.com
Fri Apr 17 00:26:19 EEST 2020

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.

("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

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