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Trying to save ustream, sometimes the resulting file is empty

 (http://stream-recorder.com/forum/showthread.php?t=15161)

BoD 01-29-2013 08:12 AM

Trying to save ustream, sometimes the resulting file is empty


 
Hi!

I have followed the instructions on this page:
http://www.tech-juice.org/2012/05/20...annels-in-vlc/
to find the rtmp address of some ustream channels, and save a few seconds in a file.

Sometimes it works with no problem.
But sometimes, it seems I receive no data, and the resulting file is empty.

Here is an example that works:
Code:
$ rtmpdump -v -r "rtmp://ustreamlivefs.fplive.net/ustream1live-live/stream_live_1_1_13027422" -W "http://www.ustream.tv/flash/viewer.swf" --live -o ~/tmp/test.flv --stop 4
RTMPDump v2.4
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
ERROR: RTMP_HashSWF: couldn't contact swfurl http://www.ustream.tv/flash/viewer.swf (HTTP error 302)
Connecting ...
WARNING: HandShake: client signature does not match!
INFO: Connected...
Starting Live Stream
For duration: 4.000 sec
INFO: Metadata:
INFO:  author               
INFO:  copyright           
INFO:  description         
INFO:  keywords             
INFO:  rating               
INFO:  title               
INFO:  presetname            Custom
INFO:  creationdate          Mon Jan 28 14:22:36 2013
INFO:  videodevice          XSplitBroadcaster
INFO:  framerate            30.00
INFO:  width                1280.00
INFO:  height                720.00
INFO:  videocodecid          avc1
INFO:  avclevel              31.00
INFO:  avcprofile            100.00
INFO:  videodatarate        390.62
INFO:  videokeyframe_frequency0.10
INFO:  audiodevice          VHAudioCustom
INFO:  audiosamplerate      44100.00
INFO:  audiochannels        1.00
INFO:  audioinputvolume      100.00
INFO:  audiocodecid          mp4a
INFO:  audiodatarate        93.75
INFO:  bufferSize            1200k
INFO:  maxBitrate            1200k
INFO:  xsplitBroadcasterVersion1.3.0.85
INFO:  xsplitCoreVersion    1.2.1301.1501 Version 1.2
INFO:  xsplitGameSourceVersion1.1.1.26
INFO:  xsplitMediaLibVersion 2.0.0.195
1061.349 kB / 2.95 sec
Download complete

Here is an example that does NOT work:

Code:
$ rtmpdump -v -r "rtmp://ustreamlivefs.fplive.net/ustream1live-live/stream_live_1_1_2298576" -W "http://www.ustream.tv/flash/viewer.swf" --live -o ~/tmp/test.flv --stop 4
RTMPDump v2.4
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
ERROR: RTMP_HashSWF: couldn't contact swfurl http://www.ustream.tv/flash/viewer.swf (HTTP error 302)
Connecting ...
WARNING: HandShake: client signature does not match!
INFO: Connected...
Starting Live Stream
For duration: 4.000 sec
0.000 kB / 0.00 sec
Download complete
As you can see it downloaded 0 bytes.

Any idea what could be the problem?

Thanks a lot!

BoD 01-31-2013 10:44 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
No clue?

AmazingMatze 01-31-2013 12:40 PM

Re: Trying to save ustream, sometimes the resulting file is empty


 
Quote:
ERROR: RTMP_HashSWF: couldn't contact swfurl http://www.ustream.tv/flash/viewer.swf (HTTP error 302)
What is the pageURL for the streams you cannot access?

chap 01-31-2013 03:08 PM

Re: Trying to save ustream, sometimes the resulting file is empty


 
Quote:
Originally Posted by BoD (Post 59301)
No clue?
try
Code:
rtmpdump -v -r "rtmp://ustreamlivefs.fplive.net/ustream1live-live/stream_live_1_1_2298576" -W "http://static-cdn1.ustream.tv/swf/live/viewer.rsl:368.swf" -y "stream_live_1_1_2298576" -o "live.flv"
Code:
>rtmpdump -v -r "rtmp://ustreamlive
fs.fplive.net/ustream1live-live/stream_live_1_1_2298576" -W "http://static-cdn1.
ustream.tv/swf/live/viewer.rsl:368.swf" -y "stream_live_1_1_2298576" -o "live_1.
flv"
RTMPDump v2.4-80-g5b6f677
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting Live Stream
INFO: Metadata:
INFO:  framerate            30.00
INFO:  width                512.00
INFO:  height                384.00
INFO:  videocodecid          avc1
INFO:  videodatarate        500.00
INFO:  videokeyframe_frequency120.00
INFO:  audiocodecid          mp4a
INFO:  audiosamplerate      44100.00
INFO:  audiochannels        2.00
INFO:  audiodatarate        96.00
1511.473 kB / 15.90 sec
-

BoD 02-01-2013 04:02 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
Thanks a lot for your help!
I just tried your command, Chap, but it still does the same for me:

Code:
$ rtmpdump -v -r "rtmp://ustreamlivefs.fplive.net/ustream1live-live/stream_live_1_1_2298576" -W "http://static-cdn1.ustream.tv/swf/live/viewer.rsl:368.swf" -y "stream_live_1_1_2298576" -o ~/tmp/live.flv
RTMPDump v2.4
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting Live Stream
0.000 kB / 0.00 sec
Download complete
It stays ~10 seconds after "Starting Live Stream" and then it stops with the rest of the message.

I realized there was a problem with the -W parameter, but I think it is not related to my issue since it works with other streams even with this warning.

I am wondering if maybe the stream is simply not available at times... Ustream indicates certain channels as "offline", but it is weird because the original page (http://www.ustream.tv/ffrc warning: video of cats :)) is NOT "offline" right now, and I can watch the video in the broswer, so it must be something else...

Thanks again for your help.

AmazingMatze 02-01-2013 08:45 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
This one should do the trick...
Code:
rtmpdump -r "rtmp://flash51.xo.tcdn.ustream.tv:1935/ustreamCdn/flash57/2298576" -a "ustreamCdn/flash57/2298576" -f "WIN 11,5,502,146" -W "http://static-cdn1.ustream.tv/swf/live/viewer.rsl:369.swf" -p "http://www.ustream.tv/ffrc" -y "streams/live_1" -o "some_cats_here.flv
Accidentally deleted my previous post here.

BoD 02-01-2013 08:48 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
Hey thanks for the reply. How did you get this url and parameters? I'm guessing using wireshark or something similar?

AmazingMatze 02-01-2013 08:56 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
I used to use Wireshark for tricky stuff. For this one I used RTMPDumpHelper & RTMPSuck. Enjoy your kitty cats! I'm a dog fan btw :)

BoD 02-01-2013 09:05 AM

Re: Trying to save ustream, sometimes the resulting file is empty


 
Ahah :) thanks man.
Actually I am looking for a "general" solution to the problem of grabbing a frame from any UStream channel. That's where the python script I mentioned comes in. But I guess I'll just have to accept that it doesn't always work (plus this script will inevitably break when UStream changes their html code...)


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