[FFmpeg-user] slice and enabling slicecrc in FFv1

[Michael Niedermayer]

On Thu, Sep 24, 2015 at 02:20:28PM -0400, Dinah Handel wrote:
> Dear FFmpeg-users,
> 
> I’m currently testing different specifications of FFv1: enabling each slice
> options, and enabling and disabling slicecrc. The purpose of these tests is
> to see whether or not enabling these options makes a significant difference
> in processing times or the resilience of the resulting files for long-term
> storage. However, in running these tests, it seems that the error
> concealment used when slicecrc is enabled on a damaged slice is not working
> as intended.
> 
> We conducted tests where the asset had every possible slice option (4, 6,
> 9, 12, 16, 24, 30) and slicecrc enabled and disabled. We then intentionally
> created errors using zuff.
> 
> We analyzed at the results using the tblend filter (which makes it easier
> to see when a slice uses error concealment since the difference within the
> slice from one frame to the next will be null) and found the following
> results:

should be fixed

thanks

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The bravest are surely those who have the clearest vision
of what is before them, glory and danger alike, and yet
notwithstanding go out to meet it. -- Thucydides
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