[MPlayer-users] Re: RTSP/MMS live stream (radio) capture ?

[Bryan Alton]

nicolas.baly at epfl.ch wrote:

>> On Mon, 17 Oct 2005 22:44:20 +0200
>> nicolas.baly wrote:
>>
>> > Here's the command I use to capture streams:
>> > mplayer -v -dumpstream -dumpfile stream.rm <URL>
>> >
>> > This works for any HTTP live streams (shoutcast) and all
>> > HTTP/MMS/RTSP/PNM fixed-length (non-live) streams.
>> >
>> > Does anybody know how to capture live streams through MMS, RTSP and PNM
>> > protocol?
>> >
>> > Here are some examples (URLs) from dutch radios:
>> > rtsp://livestreams.omroep.nl/live/vpro/vpro3voor12radiocentral.rm
>> > rtsp://livestreams.omroep.nl/broadcast/rnw1.rm
>> > pnm://82.148.204.181/encoder/live.rm
>> > and those using MMS protocol...
>> >
>> > MPlayer seems to capture these streams, but when I play them, there is
>> > no
>> sound.
>>
>> I have captured rtsp and mms streams in this way. But are you sure that
>> those are the urls of the streams, or are they a playlist (ie a small
>> text file containing the url of the real stream?)
>>
>> try putting -playlist beofre the URL
>>
>> Also I assume you have mplayer compiled with support for the real
>> codecs? what error message do you get when trying to play the stream?
>>
>> Nick Rout <nick at rout.co.nz>
>>
> 
> These are no playlists, they are direct URL addresses to live streams
> (radio stations). I don't get any error message, mplayer works properly:
> the resulted file (live.rm) is of a certain length and size (1.6MB), but
> there is no sound. As it is LIVE, hence infinite stream, I need to
> interrupt the capture. I do have the required REAL codecs as the capture
> works for any other NON-LIVE RTSP/MMS streams(.rm).
> 
> Thanks.
> 
>> ------------------------------
>>
>> Mencoder should do it.
>>
> 
> I tryed mencoder, but it doesn't work...
> 
> mencoder rtsp://82.94.242.21:554/broadcast/radio.rm -oac copy -ovc copy
> -o stream
> 
> File not found: 'frameno.avi'
> Failed to open frameno.avi
> Connecting to server 82.94.242.21[82.94.242.21]:554 ...
> Cache size set to 640 KBytes
> Connected to server: 82.94.242.21
> success: format: 11  data: 0x0 - 0x0
> REAL file format detected.
> Stream description: Audio Stream
> Stream mimetype: audio/x-pn-multirate-realaudio-live
> demux_real: invalid chunksize! (0)
> Video stream is mandatory!
> 
> Thanks.

What do you use to play the captured file back ? Mplayer or RealPlayer ?

Captured RTSP live stream will not play back through Realplayer because of
the timestamp in the stream packets does not start at zero.  They usually
playback through Mplayer.