[FFmpeg-devel] AVfilter with changing pixel format
cus at passwd.hu
Tue Jun 5 02:53:02 CEST 2012
I'm trying to fix ffplay to be able to use avfilter with changing input
pixel format. I'm a bit confused how it should be done.
The way I see it I'm going to get a new pixel format in input_get_buffer
callback of the codec, where I should allocate the necessary space for the
frame by calling avfilter_get_video_buffer.
But I cannot give a custom pixel format to avfilter_get_video_buffer, it
is always using the link pixel format. Wouldn't it make sense to be able
to pass the pixel format as parameter to
- get_video_buffer callback of AVFilterPad
Can this be done while not breaking the API? Is there another way?
I just did a quick replace of the above calls with the pixelformat enabled
versions, and pixel format changing started working like a charm.
I am not too familiar with the filter api, so any pointers to what should
be done and how would be greatly appreciated.
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