No both are different also in ffserver config file reduce file max size to 200 k On Jul 26, 2014 9:06 PM, "David Ventura" <[email protected]> wrote:
> isn't using both as input parameters redundant? > nobuffer: > > Reduce the latency introduced by optional buffering > direct > > Reduce buffering. > > I'll try it anyway and report back, thanks > > > On 26 July 2014 02:18, Jeet Bhatnagar <[email protected]> > wrote: > > > Use truncate in ffserver config file > > And avioflags direct,fflags nobuffer in command line > > On Jul 25, 2014 8:47 AM, "David Ventura" <[email protected]> > wrote: > > > > > Hi > > > I'm streaming 2 video sources and 1 audio source to ffserver, then > > pulling > > > them with a complex filter and submitting them to an rtmp server far, > far > > > away. > > > I'm using 3 different computers for this, one that pushes (camera + > > xorg), > > > a server (that pushes audio from mumblerecbot) and another computer > that > > > pulls + pushes to rtmp. > > > > > > (Not looking for any simplifications, but if you know something else I > > > should try, please tell me) > > > > > > My problem: the video that's being pulled is delayed *exactly* 26 > > seconds. > > > I'm now using this live with -itsoffset 26 and works wonders*(see > below) > > > (only, introducing 26 seconds of delay for something that should be > live) > > > > > > The output of the commands is not pasted because it's normal, but I'll > > set > > > everything up again and run it if it's needed. > > > > > > Push Camera: > > > ffmpeg -f v4l2 -s 640x480 -framerate 20 -i /dev/video1 -c:v libx264 > -an > > > -preset ultrafast -threads 2 -crf 6 http://192.168.1.123:8099/left.ffm > > > > > > Push X: > > > > > > ffmpeg -f x11grab -r 20 -s $resol -i :0.0 -s 640x480 -c:v libx264 -an > > > -preset ultrafast -crf 8 -threads 1 > http://192.168.1.123:8099/right.ffm > > > > > > Pull Camera and X, with audio > > > > > > ffmpeg -re -i http://192.168.1.123:8099/left.flv -re -i > > > http://192.168.1.123:8099/right.flv -filter_complex > > > "[0:v]setpts=PTS-STARTPTS, scale=iw:ih, pad=2*iw:ih [left]; > > > [1:v]setpts=PTS-STARTPTS, scale=iw:ih [right]; [left][right] > > > overlay=main_w/2:0" -re -itsoffset 00:00:20 -i > > > http://192.168.1.123:8099/audio.mp3 -c:v libx264 -vsync 1 -r 20 > -acodec > > > libfaac -preset ultrafast -crf 26 -maxrate 1000k -bufsize 1600k -tune > > > zerolatency -f flv rtmp://********** > > > > > > > > > FFServer > > > > > > <Feed left.ffm> > > > File /tmp/left.ffm > > > FileMaxSize 5m > > > ACL deny 127.0.0.2 > > > </Feed> > > > <Feed right.ffm> > > > File /tmp/right.ffm > > > FileMaxSize 5m > > > ACL deny 127.0.0.2 > > > </Feed> > > > <Feed audio.ffm> > > > File /tmp/audio.ffm > > > FileMaxSize 1m > > > ACL deny 127.0.0.2 > > > </Feed> > > > <Stream left.flv> > > > #camera > > > Format flv > > > Feed left.ffm > > > > > > PreRoll 0 #dont buffer > > > NoAudio > > > VideoCodec libx264 > > > VideoSize 640x480 > > > VideoGopSize 20 > > > AVOptionVideo pix_fmt yuv420p > > > AVOptionVideo flags +global_header > > > > > > #libx264 > > > PixelFormat yuv420p > > > AVOptionVideo me_range 16 > > > AVOptionVideo qdiff 4 > > > AVOptionVideo qmin 0 > > > AVOptionVideo qmax 51 > > > #StartSendOnKey > > > </Stream> > > > <Stream right.flv> > > > Format flv > > > Feed right.ffm > > > > > > PreRoll 0 #dont buffer > > > NoAudio > > > VideoCodec libx264 > > > VideoSize 640x480 > > > VideoGopSize 20 > > > AVOptionVideo pix_fmt yuv420p > > > AVOptionVideo flags +global_header > > > > > > #esto para libx264 > > > PixelFormat yuv420p > > > AVOptionVideo me_range 16 > > > AVOptionVideo qdiff 4 > > > AVOptionVideo qmin 0 > > > AVOptionVideo qmax 51 > > > #StartSendOnKey > > > </Stream> > > > <Stream audio.mp3> > > > Feed audio.ffm > > > Format mp2 > > > AudioCodec libmp3lame > > > AudioBitRate 96 > > > AudioChannels 1 > > > AudioSampleRate 48000 > > > NoVideo > > > PreRoll 2 > > > </Stream> > > > > > > > > > > > > > > > StartSendOnKey disabled so both streams start at the same time > > > > > > > > > Below*: > > > Important: If I set the itsoffset to 26 the audio/video get in sync but > > the > > > output starts stuttering until I get something (within 1-2 minutes) > like: > > > > > > <http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=30&t=2057&p=7070# > >[h264 > > @ > > > 0x154dba0] corrupted macroblock 23 0 > (total_coeff=16)itrate=1002.2kbits/s > > > > > > [h264 @ 0x154dba0] error while decoding MB 23 0 > > > [h264 @ 0x154dba0] corrupted macroblock 34 3 (total_coeff=16) > > > [h264 @ 0x154dba0] error while decoding MB 34 3 > > > [h264 @ 0x154dba0] concealing 1095 DC, 1095 AC, 1095 MV errors in I > frame > > > DTS 845582853, next:90100000 st:0 invalid dropping:01:50.13 bitrate= > > > 820.7kbits/s > > > PTS 845582853, next:90100000 invalid dropping st:0 > > > [h264 @ 0x154e360] Missing reference picture, default is 0 > > > [h264 @ 0x154e360] decode_slice_header error > > > WriteN, RTMP send error 104 (136 bytes)And the video stops. > > > > > > > > > Having pasted all those configs: > > > > > > 1-This error would be a non-problem if the delay was not there, so I'm > > not > > > too focused on fixing that, I'd rather fix the delay (or at least > reduce > > > it, using itsoffset up to 10 does not give errors) > > > > > > > > > 2-The video (complete, with audio) starts with a big buffer(around 1 > > > minute) and the buffer starts 'decaying' over time , after about 50 > > > minutes, the delay is around 8 seconds. No clue about this, but it's > not > > > really relevant (if this keeps for 3 hours the delay keeps at 8 > seconds, > > > included rtmp) > > > > > > > > > Thanks a lot > > > > > > -- > > > We need only a little more code,and little more money,and little more > > time, > > > and little more sleep but the world needs a lot more freedom > > > _______________________________________________ > > > ffmpeg-user mailing list > > > [email protected] > > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > > > -- > We need only a little more code,and little more money,and little more time, > and little more sleep but the world needs a lot more freedom > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
