[x264-devel] Re: H.264 bitstream visualization tool?

[Loren Merritt]

On Tue, 1 Feb 2005, Tuukka Toivonen wrote:

> Is anyone aware of an H.264 bitstream visualization tool,
> something that would read H.264 bitstream and display graphically at least
> where there are intra and inter blocks and motion vectors and
> macroblock partitioning?

I just use mplayer, as you describe.

> mplayer -lavdopts debug=0x4000
> gives nice picture but I don't know what it means =)

Colors are MB-types, compare to debug=8 to figure out which is which.
Lines are partitions.

> mplayer -lavdopts debug=0x4008:vismv=1
> is very nice but
> - Can not single-step forward/backward

You can single-step forward using '.'

> - Appears not to display sub-partitions (or maybe my file
>  doesn't have them).

The visualization is currently done by the generic mpegvideo functions, 
without knowing anything about h264-specific types.

--Loren Merritt

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