[linux-dvb] I-Frame Detection

Thomas Lagemann thomas.lagemann at stud.tu-ilmenau.de
Fri Oct 5 11:40:33 CEST 2007


Thank you guys. ISO 13818-2 indeed holds the solution.
Section 6.2 describes the Video bitstream syntax. Just need to find the
picture header(described in 6.2.3) wich contains the picture coding type.

Nico Sabbi wrote:
> Il Thursday 04 October 2007 15:34:11 Thomas Lagemann ha scritto:
>   
>> Hi there,
>> this is a bit off-topic since it is not a really linux-specific
>> question, but maybe someone does know this right away.
>> I'm lookig for a way to recognize the type of a video-frame in
>> MPEG-2 (I.P or B) to create smooth transitions between video files,
>> without having to decode the whole frame. I looked through the
>> MPEG-2 TS and PES definitions, but all i found was a
>> splicing_point_falg in the TS Adaptation Field. Unfortunately the
>> hardware-encoder i'm working with doesn't seem to set these flags.
>>
>> Does anybody know another way how to determin the frame type?
>>
>>     
>
> you need to demux the video stream and analyze the picture_coding type
> in the picture_header. Search for some draft of ISO 13818-2 in google
>
> _______________________________________________
> linux-dvb mailing list
> linux-dvb at linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>   




More information about the linux-dvb mailing list