[Icecast] Problems with low frame rate streams

José Luis Artuch artuch at speedy.com.ar
Sat Feb 9 07:09:24 PST 2013


Hello Gabor.
I do not know if you've already found a solution ...
I've made ​​similar experiences, but I have not paid attention to what
happens with an fps = 4.
Did you run ffmpeg2theora ... | oggfwd ... as source client of the
Icecast server ?.
What I can tell you is that using vlc as source client (without X) I
have better results than with ffmpeg2theora + oggfwd. I wanted to use
ffmpeg2theora + oggfwd because I see it more simple, but I had to opt
for vlc as source client.
Both streams of video work, but with ffmpeg2theora + oggfwd in my case
is very slow.
I am using a Pentium IV, maybe if I use a more modern machine I should
not have problems with ffmpeg2theora + oggfwd ... ?
José Luis

El lun, 10-09-2012 a las 10:49 +0200, Gabor Kovesdan escribió:

> Hi Thomas,
> 
> Em 07-09-2012 12:40, Rücker Thomas escreveu:
> > Could you shed some more light on what the actual problem is?
> > Icecast's behaviour, logs at debug level. Client software behaviour, etc.
> > 
> > Without that it's really hard to even guess what is going wrong...
> 
> I'm sorry if my first mail wasn't clear on this. In Icecast, I see this
> mount point on the status page as if everyting were going fine, it even
> detects the resolution and the 2.00 FPS. The only thing I see in the log
> file is:
> 
> gabor at io:~$ tail /var/log/icecast2/error.log
> [2012-09-10  10:42:27] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:29] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:31] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:32] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:33] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:35] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:36] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:37] INFO source/source_main listener count on
> /full512.ogg now 1
> [2012-09-10  10:42:38] INFO format-theora/initial_theora_page seen
> initial theora header
> [2012-09-10  10:42:39] INFO format-theora/initial_theora_page seen
> initial theora header
> 
> The streamed video is created with ffmpeg and sent to icecast with
> oggfwd. When I open this stream from the icecast status page with VLC,
> it seems it is buffering but actually it will never start. If I increase
> the FPS it just starts working or if instead of streaming, I write the
> same low-FPS video into a file and I download it, VLC can play it
> without problems.
> 
> Gabor
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