1. Is there a generic/multi-platform logic/flow for enabling the hardware acceleration for encoders/decoders using only FFmpeg API?
2. I noticed that FFmpeg source code has separated files like ffmpeg_dxva2.c, ffmpeg_videotoolbox.c, etc and uses them to prepare some stuff before using the hardware acceleration. Supposing I don't know anything about the underlying of the hardware acceleration and just want to use it without having to deal with platform specific code... is it possible? is there a good example for this? 3. I noticed that the special case of the VDA exposes the decoder "h264_vda" as an AVCodec just like any other codecs... why not do this for all the other hardware acceleration? like DXVA2, QuickSync, NVENC, etc...
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