MPEG1 file real-time playing method based on IP STB
An IP set-top box and real-time playback technology, applied to color TV parts, TV system parts, electrical components, etc., can solve the problems of data decoding and real-time playback that cannot be transmitted by RTP protocol
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[0042] Embodiment 1, as shown in the accompanying drawing, the method step of the real-time broadcast of the MPEG1 file based on the IP set-top box is as follows:
[0043] In the first step, the SDP information transmitted through the RTSP protocol is analyzed to obtain the file information parameters required by the decoder for real-time playback.
[0044] The information parameters that can be obtained from the SDP information include file type, duration, audio and video encoding format, sampling frequency, maximum rate, etc. The above parameters are used to initialize the hardware decoder.
[0045] As shown in Figure 1, the following parameters in the SDP can obtain playback support information:
[0046] The "m=(media name and transmission address)" field obtains the media type and encoding format;
[0047] The format of the "a=*(0 or more session attribute lines)" field is a=:, where the attributes include duration, sampling frequency, maximum rate, video width and height...
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