[FFmpeg-devel] [PATCH] force dnxhd encoder to be independent of qsort internals

Reimar Döffinger Reimar.Doeffinger
Sun Sep 20 10:59:03 CEST 2009

On Sun, Sep 20, 2009 at 12:36:30PM +0400, Michael Kostylev wrote:
> On Sat Sep 19 13:16:51 2009
> Reimar D?ffinger wrote:
> > this change makes sure there are no equal elements in the data passed to
> > qsort, thus making sure the result is independent of implementation
> > internals.
> > Not benchmarked, but compared to the function call overhead the extra
> > code in the comparison function should not hurt that much.
> > Regression test references need to be updated, too.
> > Tested and at least FreeBSD and Linux give the same results.
> Tested on OpenSolaris/i386, the encoding is ok, the decoding fails.

You are misreading the results, there is some issue with 1080i and dv,
while 720p is ok in your results.
Which step exactly in the 1080i scaling, encoding, decoding, scaling
cycle is an issue is not really possible to conclude from the available

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