[FFmpeg-devel] [PATCH] Clip-Wrapped MXF support (attempt #4)

Maksym Veremeyenko verem
Tue Feb 22 08:26:59 CET 2011

Benjamin Larsson ???????(??):
> On 02/21/2011 01:34 PM, Maksym Veremeyenko wrote:
>> Benjamin Larsson ???????(??):
>>> On 02/21/2011 12:36 PM, Maksym Veremeyenko wrote:
>>>> Benjamin Larsson ???????(??):
>>>> [...]
>>>>> I think the best way to support these kind of files is to parse the
>>>>> file
>>>>> to find all mxf indexes and then generate one index that is use for
>>>>> getting packets and seeking. These kind of streams are actually VBR as
>>>>> the first frame is ca 100bytes larger then the rest. Using a fixed
>>>>> EditUnitByteCount will cause bad framing or the need to drop the first
>>>>> frame.
>>>> Great! Could you provide a patch for this?
>>>> Is it better to apply this patches and find a minimal support of
>>>> Clip-wrapped MXF files or wait until somebody who interesting in VBR
>>>> support will ever implement that feature?
>>> I need this feature. And I intent to implement it also.
>> So you have own patches set for implementing VBR Clip-Wrapped support?
>> I am also interesting what is source of VBR Clip-Wrapped files?
> Well I meant I need the P2 support feature and the P2 files are pseudo
> VBR. The P2 files seem to demux properly now, I implemented a somewhat
> ok solution. But I don't have any player for avc intra so I'm not sure.

So you have own implementation of clip-wrapped support? Why did you hide 
that? For year i am trying to submit a patches to support P2 support and 
now, then almost nobody against committing that patches, you claim you 
have own support. Did afraid that ffmpeg will have P2 implementation not 
yours (possible sponsored or even paid)?

Why don't post your patches? As you are *undersigned* you will not any 
difficult in committing your patches. Commit them (patches) and stop 
this endless attempts in providing /Clip-Wrapped MXF support/

Year ago, then i start to publish P2 support patches, i was definitely 
sure that person who blames my patches in a best *was* rejected by 
Panasonic for money payment for P2 support in ffmpeg. Now situation is 
seems similar to me but somebody *already* received payment and 
implemented P2 support... Good practice from MAINTAINERS - reject, drop 
and blame patches that extend functionality that could be /sponsored/....

Maksym Veremeyenko

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