Reuben, thanks to answer. I did 2 tests : 1. I received the stream with VLC and I have a similar problem like with the IP QAM. 2. Transcode the stream and the video its ok.
But my doubt is, if I receive the "stream copy" with ffplay, it runs perfect!, so it seems the response to my problem is, the way ffplay process/recover the time base. If I enable a debug it looks like every time ffmpeg make an http request for the playlist, there is a delay until receive it, and seems at this point the video freeze, and then continue. Thanks for another suggestion. Ana On Wed, Jul 20, 2016 at 12:56 AM, Reuben Martin <[email protected]> wrote: > On Tuesday, July 19, 2016 10:16:03 PM CDT Anacelia Sarlo wrote: > > ffmpeg -re -y -i $stream -c copy -f mpegts -map 0:0 -map 0:1 > > -mpegts_pmt_start_pid 66 -streamid 1:71 -streamid 0:70 udp:// > > 192.168.1.108:1234?pkt_size=1316 > > > > When I watch the stream from the cable network, the audio is OK but the > > video looks sometimes faltering and other times too fast, and out of > sync. > > But when I received this same output with ffplay it runs OK. > > It seems there is a problem with the time base, I did many testings with > > (genpts, copyts, etc) with no good results. > > You might try and see what happens if you re-encode it rather than copying > the > media streams. Thing is with copying the stream you pass on any flaws that > might be able to be corrected by ffmpeg, but are not as gracefully dealt > with > by other implementations. > > At least that might help narrow the problem down a bit and determine if the > problem is with the origional source, or with ffmpeg. > > It would be nice to have a bit-stream filter to re-write time stamps when > doing a stream copy, but sadly no such filter exists yet. > > -Reuben > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
