[Libav-user] ffmpeg H.264 decoding

Malik Cissé mc at enciris.com
Mon Nov 19 18:36:03 CET 2012


I managed to get an ffmpeg based H.264 elementary stream decoder work.
It uses following synthax to decode one frame:
codec = avcodec_find_decoder(CODEC_ID_H264);
len = avcodec_decode_video2(c, picture, &got_picture, &pkt);

My question:
The decoding goes very fast and CPU usage is low.
Can I guaranty same performance on similar CPU's?
Is any Hardware acceleration (mmx, GPU, DXVA, etc) used to decode the frames?
What is done behind the scene? Is there any buffering?


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