[Live-devel] FramedFilter questions

[Julian Lamberty]

Hi!

I've some questions related to the FramedFilter class. I subclassed it 
to transcode a MPEG2 Stream to MPEG4. So the structure of my program 
looks like:

MPEG1or2VideoRTPSource -> Transcoder (my class) -> 
MPEG4VideoStreamDiscreteFramer -> MPEG4ESVideoRTPSink

My Transcoder class reads data as long as it is able to decode one 
frame. When one frame has been decoded it is passed to an encoder 
(ffmpeg) which writes one complete frame into the fTo buffer (limited by 
fMaxSize).

The problem is that the MPEG4 stream I send seems to be totally 
corrupted. Thus I have some questions:

Which variables do I have to set before I pass data to 
MPEG4VideoStreamDiscreteFramer? Do I need to care about 
fpresentationTime, fdurationInMicrosecond? If yes, how do they have to 
be set? Right now I just set them to the values I get from the source 
(presentationTime, durationIn Microseconds (which equals -1 btw)). Is 
this correct?

I'm somehow stuck right now, I do not know whats wrong. When I just pass 
packets everything works fine (of course I use another structure then: 
MPEG1or2VideoRTPSource -> Transcoder (just memcpys) -> 
MPEG2VideoStreamDiscreteFramer -> MPEG1or2VideoRTPSink).

Ideas and help appreciated ;)

Thanks!

Julian
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 5198 bytes
Desc: S/MIME Cryptographic Signature
Url : http://lists.live555.com/pipermail/live-devel/attachments/20070602/80ce68c7/attachment-0001.bin