[FFmpeg-devel] [PATCH] [RFC] avcodec: export MB information in frame side data

Clément Bœsch u at pkh.me
Wed Jul 16 17:31:47 CEST 2014

On Wed, Jul 16, 2014 at 05:06:27PM +0200, Clément Bœsch wrote:
> Also add an example exporting the MB information as a CSV stream.
> ---
> A bunch of questions stand:
> - Ideally the "source" for a given macroblock should be a specific
>   reference to a future or paste frame (something like -4 or +2).
>   Currently it's just ±1 depending on the direction. I don't see how I
>   can extract that information.
> - how the MB "type" should be exported? Like, what "generic" type we
>   need to expose for the users
> - Who is motivated to port -vismv & various other vis_* debug to a video
>   filter? (The hard part will probably be writing its documentation...)

Ah and BTW, can we make the decode step faster somehow in the example
since we're only interested in the MB and not the final picture? I was
thinking of lowres, but maybe we can even skip the whole decode step with
some of the codecs?


Clément B.
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