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nwtim
09-25-2012, 04:40 PM
I had great success capturing a lot of the .m3u8 streams from NBCOlympics.com using ffmpeg and it got me wanting to understand more about stream capturing so I could try it from other sites.

For example, if I wanted to capture the stream for one of the episodes of "The Next" on CW (eg. http://www.cwtv.com/cw-video/the-next/new-york/?play=15dddd4c-63cb-4ddd-8361-82b68242f053), how should I go about it? How do I decide on the best tool(s) to use and what are the types of URLs to look for when I don't see a recognizable (eg. .m3u8) extension in the URL? Using Firefox's web console and following the same masking technique I used to get NBCOlympics video URLs, I ended up with:

http://warnerbros.112.2o7.net/b/ss/wbrosthecw/0/FAS-2.8.1-AS3/s19248463488183?AQB=1&ndh=1&t=25/8/2012%2015%3A22%3A53%202%20420&ce=ISO-8859-1&ns=warnerbros&cdp=3&pageName=New%20York&g=http%3A//www.cwtv.com/cw-video/the-next/new-york/%3Fplay%3D15dddd4c-63cb-4ddd-8361-82b68242f053&cc=USD&events=event1&v1=TheCW.us&v2=Video&v7=The%20Next&v8=New%20York&v20=Inline&pe=lnk_o&pev2=event1&s=1600x1200&AQE=1

but have no idea what to do with it if that is in fact what it should look like.

Can anyone provide some guidance?

Thanks!

svnpenn
09-25-2012, 09:13 PM
$ rtmpdump -r "rtmpe://wbworldtv.fcod.llnwd.net/a2246/o23/" -a "a2246/o23/" -f
"WIN 11,3,300,257" -W "http://pdl.warnerbros.com/cwtv/digital-smiths/production
_player/vsplayer.swf" -p "http://www.cwtv.com/cw-video/the-next/" -y "mp4:cwtv/
videos/2012/09/20/NXT106-los-angeles_b3442ebff_500kbps.mp4" -o NXT106-los-angel
es_b3442ebff_500kbps.flv
RTMPDump v2.4-41-g7bae82a
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
WARNING: HandShake: Type mismatch: client sent 6, server answered 9
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO: duration 2588.62
INFO: moovPosition 191786766.00
INFO: width 640.00
INFO: height 352.00
INFO: videocodecid avc1
INFO: audiocodecid mp4a
INFO: avcprofile 100.00
INFO: avclevel 32.00
INFO: aacaot 2.00
INFO: videoframerate 29.97
INFO: audiosamplerate 44100.00
INFO: audiochannels 2.00
INFO: tags:
INFO: ©too Lavf52.31.0
INFO: trackinfo:
INFO: length 77658581.00
INFO: timescale 30000.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype avc1
INFO: length 114157568.00
INFO: timescale 44100.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype mp4a
1221.613 kB / 17.55 sec (0.6%)

nwtim
09-26-2012, 02:02 AM
Well, that wasn't quite what I expected. I've seen mention of rtmpdump a number of times, but I never looked into it. It looks like the script has to use a number of switches, and I'm not real sure how to know what arguments to give each of them based on the URL's I'm getting in Firefox's Web Console.

It looks like to start with I need to filter for a URL string with "rtmpe://" or ".mp4" (either seems to return the same strings). I found strings for the arguments you used for the -r, -a, -w, -p, and -y switches, but I'm not certain where the argument for the -f switch came from. I'm guessing that'll become clearer once I find the program and install it.

When I have a few minutes to give this a try I'll post my progress.

Thanks for the help so far!

svnpenn
09-26-2012, 02:41 AM
Many times the command can be simplified, for example

$ rtmpdump -r rtmpe://wbworldtv.fcod.llnwd.net/a2246/o23/cwtv/videos/2012/09/20
/NXT106-los-angeles_b3442ebff_500kbps.mp4 -o o.flv
RTMPDump v2.4-41-g7bae82a
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
WARNING: HandShake: Type mismatch: client sent 6, server answered 9
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO: duration 2588.62
INFO: moovPosition 191786766.00
INFO: width 640.00
INFO: height 352.00
INFO: videocodecid avc1
INFO: audiocodecid mp4a
INFO: avcprofile 100.00
INFO: avclevel 32.00
INFO: aacaot 2.00
INFO: videoframerate 29.97
INFO: audiosamplerate 44100.00
INFO: audiochannels 2.00
INFO: tags:
INFO: ©too Lavf52.31.0
INFO: trackinfo:
INFO: length 77658581.00
INFO: timescale 30000.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype avc1
INFO: length 114157568.00
INFO: timescale 44100.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype mp4a
1753.099 kB / 25.76 sec (0.9%)