First off - a huge thank you to all involved for a fantastic program. I am amazed at what can be achieved with this system.
I am trying out a streaming project using VLC, and although I have had some success, I am having some problems synchronizing the transcoded
output. It starts out fine, but after a varying amount of time, it seems to be slipping the audio behind the video.
My system is using mumudvb to dump an entire transponder to unicast http addresses and then my transcoder machine uses this input to produce
FLV output to be displayed via my apache webpage, using flowplayer.
All of this works perfectly and the streams start, play and continue fine. When the audio has slipped, a restart of the individual stream returns it to
normal for a time.
I have the following channel configuration in VLM ......
Code: Select all
new CH1 broadcast enabled
setup CH1 input "http://192.168.2.254:5000"
setup CH1 output #transcode{vcodec=mp4v,venc=x264{profile=main,preset=fast,vbv-bufsize=3600,vbv-maxrate=1800,fps=25},acodec=mp3,ab=64,scale=.8,channels=2,samplerate=44100}:http{mux=ffmpeg{mux=flv},dst=192.168.33.1:8100/stream1.flv}
setup CH1 option http-caching=1200
setup CH1 option sout-transcode-audio-sync
setup CH1 option sout-transcode-deinterlace
Hardware is a dell quad-code Xeon for the transcoder, and an older Xeon dual core HP server with a Haupage DVB-T twin tuner card is
performing the tuner functions.
I have tried including audio-sync in the setup code, above but the result is the same. My stream parameters have been trial and error and borrowed
knowledge from here - I am not an expert in Linux or IPTV, but can manage to bumble my way round most things with a bit of effort.
It seems that the subject is so vast, and technical at it's core, that I am probably making a fundamental error somewhere.
Can anyone offer any advice on where I am going wrong here, or any pointers on where to go next ??
If the above looks reasonably sound, perhaps I need to direct my attention to the DVB decoding process, although, there doesn't
seem to be any problems with this output - it's all in sync etc.
Thanks in advance for any suggestions, and a general thanks to all the people who help, we, the lost souls of open source on a daily basis !!
Cheers,
Jack
RIP Gary Moore - "The King of the Blues", for some of us, anyway.