[FFmpeg-devel] [PATCH] Relaxed pattern to find ProRes in MXF.

[tim nicholson]

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On 01/04/15 16:32, Steve Dierker wrote:
> Hello,
> 
>> I support this patch if you didn't make the 
>> file yourself.
>> I only had one sample.
> 
> This sample is from the same customer as the other ProRes in MXF sampl
e
> I uploaded for the bug. (Doner Advertisment)
> I found it while searching for the reason why FFmpeg refused to encode
> some files after the bug was fixed.
> I don't know if the pattern is to relaxed or if there are any other
> ul's indicating ProRes. I just orientated myself at the DnxHD
> definitions.

DNX is not in the private UL scope, and has three ranges in ffmpeg, one
of which I believe to be completely wrong (SMPTE RP224 lists them as
tiff formats), but was obviously included for some reason at some stage,
so I'm not sure its a good template.

It would be good to get a full set of Avid Prores.mxf samples to try and
see how they have structured their UL's, I only have windows machines
currently to hand, so that is a way off.

I am currently looking at the whole range of UL's to see if they can be
tidied up, but that will also take some time, so perhaps in the
interests of progress use your suggestion for now *but* change the
inline comment to something like:-

/* Avid MC7 Prores */

That will assist in identifying why the entry is there if we need to
update things, especially if the codec moves into the officially
recognised scope, as DNX did.

Given the interest in Prores in MXF from AMWA that is quite likely imho.

> 
> best,
> Steve
> 
> [...]

- -- 
Tim.
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