I read the source code again,yes,"MPEG4GenericRTPSource" indeed implements multiple frames per packet by reimplementation of the virtual function "MPEG4GenericBufferedPacket::nextEnclosedFrameSize()",but it had not update the "fPresentationTime" after the first received frame,since "frameDurationInMicroseconds" is always 0.In that case,from a multiframed packet,we will get several frames with the same timestamp,is it a bug?
2008/9/16 Ross Finlayson <[EMAIL PROTECTED]> > At 07:59 AM 9/15/2008, you wrote: > >> but what if the RTP payload which cached in buffered packet is a >> multiframed packet?In that case,what we get from >> "MultiFramedRTPSource::doGetNextFrame1" will be more than one frames >> > > That's OK. However, not all of these frames will be delivered to the > reading object at once. Instead, only one frame will be delivered at a > time. This is implemented by the virtual function > "nextEnclosedFrameSize()", which calculates the size of each frame within > the packet. > > ,for example,we received a RTP packet which contain 3 MPEG4ES video frames >> before and save it to the buffered packet,then how to pick out the single >> frames and their config information like timestamp,length or else from this >> multiframed data?As I know,both class MPEG4ESVideoRTPSource and >> MPEG4GenericRTPSource have not been completed,do they need something like >> multiframe split as in last question? >> > > "MPEG4GenericRTPSource" implements multiple frames per packet (except > currently for interleaving); note the function > "MPEG4GenericBufferedPacket::nextEnclosedFrameSize()". > > However, you're correct that "MPEG4ESVideoRTPSource" currently does not > implement multiple frames per packet (it currently does not reimplement the > "nextEnclosedFrameSize()" virtual function). > > > Ross Finlayson > Live Networks, Inc. (LIVE555.COM) > <http://www.live555.com/> > > _______________________________________________ > live-devel mailing list > live-devel@lists.live555.com > http://lists.live555.com/mailman/listinfo/live-devel >
_______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
