Mpegvideoparse no chroma format

[Nicolas Dufresne]

Le mardi 09 mai 2023 à 20:20 +0000, Miguel Leão via gstreamer-devel a écrit :
> 
> Hello everyone, I am trying to build a dynamic pipeline and depending on the
> chroma format present on the parser caps I want to select different decoders.
> For h265 and h264 I have no problem, but apparently this information is not in
> the caps of the mpegvideoparse element. 
> 
> 
> Is this supposed to be or is it a bug? I saw in the source code that this
> information is being collected but nothing is done with it...

This isn't a bug, it have not been requested as a feature. Xilinx gst-omx
backend utilize that information to enable accurate pre-allocation. Feel free to
add something similar in mpegvideoparse for older MPEG codecs.

regards,
Nicolas
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