Am Fr., 1. Nov. 2019 um 13:27 Uhr schrieb Simon Brown <[email protected]>:

> I'm trying to run some code to decode FFmpeg frames and output them in a 
> custom format.  I have started with the demux_decode sample file and it runs, 
> and decodes frames.  However, I'm running on a Raspberry Pi 4 and have built 
> FFmpeg and libraries from the latest git head with the MMAL hardware 
> accelerated enabled.  The decoder chosen is the standard h264 decoder, not 
> the hardware accelerated version, so it decodes very slowly!  How can I 
> specify which codec to use when running from C code?

A quick test to try if another decoder works at all is to disable
the default decoder at compile time with "--disable-decoder=h264"

Carl Eugen
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