[FFmpeg-devel] audio gop_size

Alex Converse alex.converse
Mon Aug 23 00:42:22 CEST 2010

On Sunday, August 22, 2010, Justin Ruggles <justin.ruggles at gmail.com> wrote:
> Hi,
> There are several audio codecs (such as MLP, ALS, and Speex) which
> utilize the concept of groups of frames. ?For decoding, it is simple
> enough to either decode the whole group at once or decode
> frame-by-frame, but for encoding there are other issues. ?This is how
> Thilo and I have implemented it in the ALS encoder we've been working
> on, and I wanted to run it by the list to make sure we're on the right
> track.

Though I expect hell to freeze over first, both SBR and the MPEG2 AAC
predictor both have a concept of a key frame that subsequent frames
depend on.

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