On Apr 15, 2020, at 10:02 PM, Ted Park <[email protected]> wrote:
>
> Hey,
>
>> An attempt to do some hardware acceleration...
>>> ffmpeg -i path/to/source.mp4 -c:v h264_omx -b:v 9000k -vf
>>> scale=1280:720,format=yuv420p path/to/dest.mp4
>> Gave the exact same same results
>
> That sounds to me like the encoder is waiting for filtered frames in both
> cases. Did you try without the -vf ?
>
> Regards,
> Ted Park
>
>
Apologies for the top-post on the prior response.
I was able to go with your suggestion after a slight tweak:
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.
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?
In any event, the -v:f doesn't seem to slow the speed in his instance.
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