[Live-devel] live stream problems

[Gbzbz Gbzbz]

Hi,

We try to stream MPEG4 via RTSP with live555. Our flow is like this

DVD -> capture 1 frame (v4l2) ->MPEG4 encoding -> Write_mpeg4_frame to myvideo.v -> send_mpeg4_frame_to_live555 -> MPEG4 decoding -> Display on TV

1. when streaming the file myvideo.v with live555's testOnDemandRTSPServer, VLC shows smooth and great video.
2. TV displays smooth and great video.
3. live streaming from send_mpeg4_frame_to_live555 step shows jitters and errors, we got video, but the quality is crappy from vlc and mplayer. mplayer prints the following

[mpeg4 @ 0x3c95184]Error at MB: 312
[mpeg4 @ 0x3c95184]concealing 1097 DC, 1097 AC, 1097 MV errors
[mpeg4 @ 0x3c95184]ac-tex damaged at 5 12                                                                 
[mpeg4 @ 0x3c95184]Error at MB: 557
[mpeg4 @ 0x3c95184]concealing 859 DC, 859 AC, 859 MV errors
[mpeg4 @ 0x3c95184]1. marker bit missing in 3. esc                                                        
[mpeg4 @ 0x3c95184]Error at MB: 364
[mpeg4 @ 0x3c95184]concealing 1043 DC, 1043 AC, 1043 MV errors
[mpeg4 @ 0x3c95184]slice end not reached but screenspace end (13352 left 0ABB06, score= -319)             
[mpeg4 @ 0x3c95184]concealing 1350 DC, 1350 AC, 1350 MV errors
[mpeg4 @ 0x3c95184]1. marker bit missing in 3. esc                                                        
[mpeg4 @ 0x3c95184]Error at MB: 108
[mpeg4 @ 0x3c95184]concealing 1294 DC, 1294 AC, 1294 MV errors
[mpeg4 @ 0x3c95184]ac-tex damaged at 0 4                                                                  
[mpeg4 @ 0x3c95184]Error at MB: 184
[mpeg4 @ 0x3c95184]concealing 1226 DC, 1226 AC, 1226 MV errors
[mpeg4 @ 0x3c95184]slice end not reached but screenspace end (10462 left 132915, score= -320)             
[mpeg4 @ 0x3c95184]concealing 1350 DC, 1350 AC, 1350 MV errors
[mpeg4 @ 0x3c95184]cbpc damaged at 17 9                                                                   
[mpeg4 @ 0x3c95184]Error at MB: 431
[mpeg4 @ 0x3c95184]concealing 979 DC, 979 AC, 979 MV errors
[mpeg4 @ 0x3c95184]slice end not reached but screenspace end (3571 left 0A7BE8, score= -320)              
[mpeg4 @ 0x3c95184]concealing 1350 DC, 1350 AC, 1350 MV errors
[mpeg4 @ 0x3c95184]dc marker bit missing                                                                  
[mpeg4 @ 0x3c95184]Error at MB: 255
[mpeg4 @ 0x3c95184]concealing 1153 DC, 1153 AC, 1153 MV errors
[mpeg4 @ 0x3c95184]slice end not reached but screenspace end (10368 left 7F1D5E, score= -322)             
[mpeg4 @ 0x3c95184]concealing 1350 DC, 1350 AC, 1350 MV errors
[mpeg4 @ 0x3c95184]concealing 3 DC, 3 AC, 3 MV errors                                                     
[mpeg4 @ 0x3c95184]ac-tex damaged at 8 9                                                                  
[mpeg4 @ 0x3c95184]Error at MB: 422
[mpeg4 @ 0x3c95184]concealing 992 DC, 992 AC, 992 MV errors
[mpeg4 @ 0x3c95184]ac-tex damaged at 10 2                                                                 
[mpeg4 @ 0x3c95184]Error at MB: 102
[mpeg4 @ 0x3c95184]concealing 1312 DC, 1312 AC, 1312 MV errors
[mpeg4 @ 0x3c95184]concealing 28 DC, 28 AC, 28 MV errors                                                  
[mpeg4 @ 0x3c95184]illegal dc vlc0                                                                        
[mpeg4 @ 0x3c95184]Error at MB: 928
[mpeg4 @ 0x3c95184]concealing 497 DC, 497 AC, 497 MV errors
[mpeg4 @ 0x3c95184]1. marker bit missing in 3. esc                                                        
[mpeg4 @ 0x3c95184]Error at MB: 211
[mpeg4 @ 0x3c95184]concealing 1207 DC, 1207 AC, 1207 MV errors
[mpeg4 @ 0x3c95184]slice end not reached but screenspace end (1118 left 110469, score= -329)              
[mpeg4 @ 0x3c95184]concealing 1350 DC, 1350 AC, 1350 MV errors

Anyone can help me? I am not familiar with MPEG stuff at all, still learning.....

Thanks!