[vlc] Re: How is H.264 indicated?

[Jean-Paul Saman]

Jonas A. Larsen wrote:

>>>Play the file in a player that does display the information you want,
>>>and play the same file in VLC.
>>>      
>>>
>>I did this with a few files and here is the result:
>>
>>- file1: According to the Stream and Media Information of vlc,
>>video contents (stream 0) is mp4v
>>Moonlight Player says DIV4 (30fps, 160x128).
>>
>>- file2: According to the Stream and Media Information of vlc,
>>video contents (stream 0) is mpgv
>>Moonlight Player says MPEG2-MP/ML (204.8kbps, 29.97fps, 352x288, 4:3)
>>
>>- file3: vlc cannot play this file (there might be some problems with
>>the file itself. I had posted a couple of questions about this last
>>week with the subject 'Problem playing .trp file')
>>Moonlight Player says H.264 (14.99fps, 320x180)
>>
>>As you can see, the two players show different information.
>>
>>This led to the conclusion that vlc can't play h.264 files which
>>I think is wrong.
>>
>>    
>>
>
>It's a funny coincidence cuz I am working on this very issue at the moment.
>I have made a patch to make vlc show video and audio tracks real formats,
>since it currently isn't done in vlc. It works fine for most formats, but
>vlc does some very weird, none standard manipulation of certain formats, for
>example many fourcc's and formats show up as fourcc "mpgv" which is, as far
>as I could tell, something videolan have made up completely. There are other
>examples as well. My guess is this is done to make it simpler to decode
>stuff since u just threat multiple fourcc's the same way. It sort of blocks
>my patch since it prohibits me from reading the real fourcc of whats
>playing, instead of just stuff like "mpgv".
>
>I would love for one of the videolan developers, to correct me or give me
>some hints on how this can be fixed. Or maybe just an explanation for why
>vlc manipulates the shown fourcc's?
>
>Regards
>Jonas Larsen
>
>  
>
Please cross check your findings with www.fourcc.org which VLC uses for 
its fourcc information.

Kind greetings,
Jean-Paul Saman.

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