[FFserver-user] stream - minimize delay

[Victor Petrescu]

Well... I try to do something similar of what you did... except that I have
a camera witch I don't know what format returns. From vlc I get mpeg-ts
container, mpeg1, 2600kbps. My problem is that any protocol I use the ffmpeg
just hangs... I tried them all. That's why I put the mplayer between.

I'll try http again... still I don't think it will magically work :).

P.S. Is not a consolation... I'm getting near 2 months also and it can be
really frustrating.

2011/3/28 Anthony Brown <av at bsbc.nb.ca>

> On 11-03-28 05:20 PM, Victor Petrescu wrote:
>
>> That's the first version I tried and it just hangs. Doesn't stream
>> anything, nor return error. After about 2 weeks of researching why it
>> does that I found the version with the mplayer, witch works.
>>
>> The entire goals is to stream with vlc from a computer to a server and
>> then again so that step can not be bypassed.
>>
>> If you can tell me how to do it so the ffmpeg works directly with the
>> stream without mplayer i'd be gladly to skip that step.
>>
>
> I have a setup that uses VLC to grab an 18.3Mbps HDV 720p60 feed over
> firewire from my camera to a winXP box.  This is sent using http streaming
> over gigE from the XP box which has the firewire card to an ubuntu box which
> has ffmpeg and ffserver.  It works.
>
> In my case, HDV is already mpeg2 transport stream, so VLC does no
> transcoding, just dumps it to http.  My ffmpeg line is something like ffmpeg
> -i http://blahblahblah:8080/live http://localhost:8090/feed1.ffm
>
> Seems that the two big differences are (1) you're trying to do some
> processing (-r 24) in your ffmpeg line.  I don't think that you can do that.
>  Also I use http rather than rtp.  You might changing one or both of these.
>
> Another possible difference is that my ffserver stream is also mpeg2 at
> 18.3Mbps.  Thus, in theory, ffmpeg doesn't have to transcode, either (though
> in practice it does since ffserver has no way of knowing that the incoming
> stream is already in the right format).  So it could also be a problem with
> the format of your stream coming from VLC.  You don't say what the output
> format of VLC is, you might try using something different as the output of
> VLC to see if that helps.  I would naturally suggest getting VLC to
> transcode to mpeg2 transport since I know that works....
>
> You could also try streaming from ffserver in a different format, although,
> since it does work with the mplayer interposed that's probably not the
> issue.
>
> If it's any consolation, it took me about 2 months to figure out exactly
> how to make all this stuff work right, and even now I'm still working out
> bugs.  In case you're interested, my goal is to capture our entire morning
> worship service in HD, while also streaming the sermon portion of it, that
> occurs at some unknown time in the middle, to a remote location in
> quasi-real time just with an arbitrary time delay.
>
>
> A/B
>
> --
>
>
> Anthony Brown
> Audiovisual coordinator
> Brunswick Street Baptist Church
> Telephone: (506)-458-8348 (leave message)
> Email:     av at bsbc.nb.ca
>
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>
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