[Ffmpeg-devel] wmv3 complex profile and vc1 frame error sample

[matthieu castet]

Kostya wrote:
> On Fri, Mar 16, 2007 at 12:13:20PM -0500, Compn wrote:
>> first is a wmv3 complex profile sample
>> mms://vipmms.canalplus.fr/canalplus/zapping_`date --date "1 days ago"
>> +'%y%m%d'`_a.wmv
>>
>> mms://vipmms.canalplus.fr/canalplus/zapping_070315_a.wmv
>>
>> [wmv3 @ 00B26C34]WMV3 Complex Profile is not fully supported
>> [wmv3 @ 00B26C34]1 for reserved RES_X8 is forbidden
>> [wmv3 @ 00B26C34]0 for reserved RES_FASTTX is forbidden
>>
>> the stream starts with some picture errors, and some errors
>> occur during scene change. is it useful to you ?
> 
> That's because of X8 frames. They are used as keyframes and use alternate
> encoding scheme. They are the same (except frame header) to WMV2 J-frames.
> If only Michael provided some info on their structure... :(

So you mean there no description of them in VC-1 reference 
implementation or Specs.

This is a wmv3 only featue ?


Matthieu