2007/12/5, Ross Finlayson <[EMAIL PROTECTED]>: > The properties that you're asking about - video width & height, video > frame rate, audio sampling frequency, audio number of channels are > almost always contained within the media data themselves, and are > therefore accessed by your decoding software (or hardware), when it > parses this media data. (A reminder that the "LIVE555 Streaming > Media" software does not include decoding software.) I.e., it is the > job of your decoder to parse the media data and extract this > information.
Yes. It is just I am implementing the Livemedia inside a plugin for Windows Media Player where they are required *before* the begining of data processing. I know it's a dshow design problem, so i will have to wait for data and process the first packets to get them. > One exception to this is that *some* simple audio codecs (e.g., PCM) > do not include the audio sampling frequency and number of channels > 'in band'. For these codecs (only), these properties are carried > separately, in the stream's SDP description, and can be accessed from > the stream's "MediaSubession" object. > >2. For H.264, is there any parser for the extra info returned by > >parseH264ConfigStr ? > > This data is a sequence of H.264 NAL units, and are therefore > parsed/interpreted by your H.264 decoder. Just a suggestion... For MPEG4, and H264, these infos are in the SDP so it is possible to have a parser in the livemedia stack I think. Thanks for the answer again, Oscar _______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
