[Ffmpeg-devel] using ffmpeg to encode an internet stream

[Benjamin Larsson]

Hi,

Cyrus Adkisson wrote:

> I'm still at a loss here. Can someone who is more experienced with 
> ffmpeg help me figure out the correct command-line for what I'm trying 
> to accomplish?
>
> The two streams I want to capture are 
> http://mmslb.eonstreams.com/wbalam?MSWMExt=.asf and 
> http://audio.wtopnews.com/stream/real/wtopnews.smil .
>
> My best attempt at the first one failed:
> >>>>>>>>>>>>>>
> [cyrus at laptop ~]$ ffmpeg -f asf -i 
> http://mmslb.eonstreams.com/wbalam?MSWMExt=.asf -y -vn -acodec mp3 
> outfile.mp3
> ffmpeg version CVS, build 3211266, Copyright (c) 2000-2004 Fabrice 
> Bellard
>  configuration:  --enable-mp3lame --enable-shared --cpu=x86
>  built on Aug 30 2005 22:41:50, gcc: 3.4.4 20050721 (Red Hat 3.4.4-2)
> http://mmslb.eonstreams.com/wbalam?MSWMExt=.asf: Error while opening file
> >>>>>>>>>>>>>>>>>>
>
the first stream I think ffmpeg is not clever enough to follow the 
redirection file that the address really is, mplayer could stream
it without any problem.

> as did my attempt at the second:
> >>>>>>>>>>>>>>>>>>
> [cyrus at laptop ~]$ ffmpeg -f rm -i 
> http://audio.wtopnews.com/stream/real/prerolls/real_audio/wtop.rm -y 
> -vn -acodec mp3 outfile.mp3
> ffmpeg version CVS, build 3211266, Copyright (c) 2000-2004 Fabrice 
> Bellard
>  configuration:  --enable-mp3lame --enable-shared --cpu=x86
>  built on Aug 30 2005 22:41:50, gcc: 3.4.4 20050721 (Red Hat 3.4.4-2)
> [NULL @ 0xb7e33150]Unsupported video codec
> Input #0, rm, from 
> 'http://audio.wtopnews.com/stream/real/prerolls/real_audio/wtop.rm':
>  Duration: 00:00:03.8, start: 0.000000, bitrate: N/A
>  Stream #0.0: Audio: sipr, 16000 Hz, mono, 16 kb/s
>  Stream #0.1: Data: 0x0000
> Output #0, mp3, to 'outfile.mp3':
>  Stream #0.0: Audio: mp3, 16000 Hz, mono, 64 kb/s
> Stream mapping:
>  Stream #0.0 -> #0.0
> Unsupported codec (id=0) for input stream #0.0
> >>>>>>>>>>>>>>
>
This one is abit trickier, even if ffmpeg is capable enough to stream it 
correcly there is no support for the sipr codec. Mplayer was capable
to stream it though.

> Can anyone capture these streams successfully?
>
I guess I could just not with mplayer.

> Cyrus
>

MvH
Benjamin Larsson