[MPlayer-dev-eng] Re: -of mpeg

Nico nsabbi at libero.it
Fri Oct 17 13:40:03 CEST 2003



Andriy N. Gritsenko wrote:

>    Hi, Nico!
>
>Sometime (on Friday, October 17 at 12:02) I've received something...
>  
>
>>It works for me, with only one exception: when recording every seek() 
>>takes me to the end of the file.
>>    
>>
>
>    Where did you find seek() in the muxer_mpeg.c ? :)
>  
>
I was writing the file on one console, then I switched to a second one 
and played the file being writtem.
Obviously the seeking function was the one in demux_mpg.c :)

>  
>
>>It would be nice if Andrji added a PSM to the mux, it could be used to 
>>insert MPEG4 :)
>>    
>>
>[.......]
>
>    Would you like to explain this in details? :)  I've tried to write
>muxer that follows ISO standard and I wonder if there is such thing as
>PSM there. May be I've missed something? ;)
>
>    With best wishes.
>    Andriy.
>  
>
It's the Program Stream Map: it has the same role (and almost the same 
syntax) as the Program Map Table in
Mpeg-TS: describing the content of the stream by means of tags and 
descriptors; there are fixed tags for Mpeg 1/2/4 video
and Audio (including AAC) plus custom ones, and descriptors for many 
purposes (languages, format, etc).
It's all described in IS13818-1 (plus Amendament 7 for mpeg4).

Thanks for your muxer !
            Nico




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