The VideoLAN Forums

Hi All,

I got a big problem when I use VLC 2.1.0-rc2 to play live H.264 stream that is output by ffserver.
the stream format is rtp. it includes Audio+ video. One rtp stream is for Audio and another is for Video.
The payload type is 96 for Video, and 97 for Audio.
Video format: H.264, 1280x720, 30fps.
Audio format: PCM_S16_LE, 2 channel, 48000 sample rate.
I see the error when VLC debug message is enabled.
"avcodec error: more than 5 seconds of late video -> dropping frame (computer too slow ?)"
then the video stream is freeze.
But I can see the packet are received continually. Why all the packet are treated as "late packet" when the error message is output ?
It seems VLC use the time that the packet as received, but not the timestamp in rtp header, right?
Does any one have ideas?

It uses the packet pts to check.

Hi,
Could you kindly help to explain the meaning of pts of packet?
Do you mean VLC use the timestamp in RTP header?
Does VLC use the difference between 2 timestamp of RTP pcaket?
if the difference is too large, then the second packet will be treated as late packet?
Could you kindly help to provide the hints?