> WHAT? Just a while ago I realized I'm passing H.264 encoded buffers to > H264VideoStreamFramer, which is perhaps doubly encoding them to H.264 again. > > Am I accidentally H.264 encoding twice? Does the original > ByteStreamFileSource fed to H264VideoStreamFramer feed raw buffers to > H264VideoStreamFramer?
I think you're confused about what our software does. *None* of our software does *any* encoding. In particular, the "H264VideoStreamFramer" and "H264VideoStreamDiscreteFramer" classes each take - as input - already-encoded H.264 video data. They don't do any 'encoding' (because the input data is already encoded. All they do is parse the input H.264 video data, and output a sequence of H.264 'NAL units', with proper 'presentation time' and 'duration' values. The difference between these two classes is that "H264VideoStreamFramer" takes - as input - H.264 video data that appears in a byte stream (e.g. a file or pipe). "H264VideoStreamDiscreteFramer", on the other hand, takes as input discrete NAL units (i.e., one NAL unit at a time), *without* any preceding 'start code'. So, the choice of which of these 'framer' classes to use depends on what kind of data comes out of your "MF_H264_DeviceSource" class. If this class outputs an unstructured byte stream (that contains H.264 video data, with 'start codes' preceding each NAL units), then use a "H264VideoStreamFramer". If, however, your "MF_H264_DeviceSource" class outputs a sequence of NAL units (one at a time, without a preceding 'start code'), then use a "H264VideoStreamDiscreteFramer" instead. In either case, your 'framer' object should then be fed into a "H264VideoRTPSink" object, for streaming. Ross Finlayson Live Networks, Inc. http://www.live555.com/
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