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[rtmpdump] Download rolls back, stores the same part several times.

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Hi,

I'm trying to download this video
https://www.ipam.ucla.edu/wowzavideo...p4&vfd=gss2012

Using rtmpsrv gave an rtmpdump command, but the download jumps back to lower completion percentages, and the resulting file repeats the content.
I'm on Linux Mint 13, using the latest git repository version of rtmpdump (compiled statically).
Sample from terminal:

Code:

~/rtmpdump $ ./rtmpdump -r "rtmp://128.97.46.13:1935/gss2012/" -a "gss2012/" -f "LNX 11,0,1,152" -W "https://www.ipam.ucla.edu/videoplayer/jwplayer.flash.swf" -p "https://www.ipam.ucla.edu/wowzavideo.aspx?vfn=10660.mp4&vfd=gss2012" -y "mp4:10660.mp4" -o mp4_10660.flv
RTMPDump v2.4
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO: trackinfo:
INFO:  timescale            30000.00
INFO:  length                98732634.00
INFO:  language              eng
INFO: sampledescription:
INFO:  sampletype            avc1
INFO:  timescale            48000.00
INFO:  length                157974528.00
INFO:  language              eng
INFO: sampledescription:
INFO:  sampletype            mp4a
INFO:  audiochannels        2.00
INFO:  audiosamplerate      48000.00
INFO:  videoframerate        29.97
INFO:  aacaot                2.00
INFO:  avclevel              40.00
INFO:  avcprofile            100.00
INFO:  audiocodecid          mp4a
INFO:  videocodecid          avc1
INFO:  width                1920.00
INFO:  height                1080.00
INFO:  frameWidth            1920.00
INFO:  frameHeight          1080.00
INFO:  displayWidth          1920.00
INFO:  displayHeight        1080.00
INFO:  framerate            29.97
INFO:  moovposition          32.00
INFO:  duration              3291.14
11077.478 kB / 25.96 sec (0.7%)
INFO: Metadata:
INFO: trackinfo:
INFO:  timescale            30000.00
INFO:  length                98732634.00
INFO:  language              eng
INFO: sampledescription:
INFO:  sampletype            avc1
INFO:  timescale            48000.00
INFO:  length                157974528.00
INFO:  language              eng
INFO: sampledescription:
INFO:  sampletype            mp4a
INFO:  audiochannels        2.00
INFO:  audiosamplerate      48000.00
INFO:  videoframerate        29.97
INFO:  aacaot                2.00
INFO:  avclevel              40.00
INFO:  avcprofile            100.00
INFO:  audiocodecid          mp4a
INFO:  videocodecid          avc1
INFO:  width                1920.00
INFO:  height                1080.00
INFO:  frameWidth            1920.00
INFO:  frameHeight          1080.00
INFO:  displayWidth          1920.00
INFO:  displayHeight        1080.00
INFO:  framerate            29.97
INFO:  moovposition          32.00
INFO:  duration              3291.14
19733.950 kB / 21.86 sec (0.6%)

[aborted by user]
Then it might go up to 0.9% before going down to 0.8% again and so on, stuttering every other promille or so.
And here is the file that resulted from that run:
https://mega.co.nz/#!Vd1TRZoI!XEzGC1...YBHX4-l4LOFXVE

The video stops after the first few seconds in the flash player, so it's not even feasible to watch it that way and I would really like to have a local copy anyway as I expect to rewatch this. rtmpdump does seem to be able to access all the material though. I left it overnight and it got up to ~25% before I stopped it (that percentage is plausible looking at the content at the end, but the sound is badly out of sync by then and all the repeats give an everpresent and unpleasant feeling of déjà vu, so that file is pretty much unusable)

Could you tell me what the problem is and point me to towards a way to fix it?

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