>Content-class: urn:content-classes:message >Content-Type: multipart/alternative; > boundary="----_=_NextPart_001_01C86E4B.3B145C33" > >Hi Ross, > >We are planning to implement MP4 streaming in server side in LIVE555 >code base with the help of libmp4 library. We have the following >clarifications: > >1. We are planning to create a separate class called >MP4VideoStreamParser which is derived from MPEGVideoStreamParser. >This class (MP4VideoStreamParser) contains methods to parse the MP4 >file and return individual frames and set fTo and fStart variables.
A "MPEG4VideoStreamParser" class *already* exists. However, see below... >2. After individual frame is read from MP4 file from above >step, the respective MPEG1or2VideoStreamFramer or >MPEG4VideoStreamFramer classes are called to construct the RTP >packet from the buffer and send the packet to the client. We assume >that MP4 file contains MPEG2 or MPEG4 video data only. Here we have >a clarification here. Do we need to create a separate class called >MP4VideoStreamFramer derived from FramedSource, which does the job >of constructing the RTP packet from the buffer and send the packet >to the client. Or We can use the existing classes >(MPEG1or2VideoStreamFramer or MPEG4VideoStreamFramer) to construct >and send the packets. Because you are generating discrete frames - one at a time - from the "libmp4" library, instead of an unstructured byte stream, you should use the *existing* "MPEG4VideoStreamDiscreteFramer" (for MPEG-4 video) or "MPEG1or2VideoStreamDiscreteFramer" (for MPEG-1 or MPEG-2 video), *instead of* "MPEG4VideoStreamFramer" or "MPEG1or2VideoStreamFramer". Also, as noted above, you don't need to write any new parsing code. -- Ross Finlayson Live Networks, Inc. http://www.live555.com/ _______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
