wangdxh/websocketvideostream

use jsmpeg.js to decode mpeg1 video, use broadway js to decode h264 video, the video stream transported by websocket, and the server wrote by golang.

just run websocketvideostream.exe

then,u can see video here:

H.264-AVC-ISO_IEC_14496-10-2012.pdf For MPEG-4 H.264 transcoders that deliver I-frame, P-frame, and B-frame NALUs inside an MPEG-2 transport, the resulting packetized elementary streams (PES) are timestamped with presentation time stamps (PTS) and decoder timestamps (DTS) in time units of 1/90000 of a second.

The NALUs come in DTS timestamp order in a repeating pattern like

I P B B B P B B B ...
where the intended playback rendering is

I B B B P B B B P ... (This transport strategy ensures that both frames that the B-frame bridges are in the decoder before the B-frame is processed.)

For FLV, the Timestamp (FLV spec p.69) tells when the frame should be fed to the decoder in milliseconds, which is

timestamp = DTS / 90.0 The CompositionTime (FLV spec p.72) tells the renderer when to perform ("compose") the video frame on the display device in milliseconds after it enters the decoder; thus it is

compositionTime = (PTS - DTS) / 90.0 (Because the PTS >= DTS, this delta is never negative.)