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Old 11-10-2010, 08:07 AM
placebo placebo is offline
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Re: How to record rtmp:// flash video .flv stream from embedded Adobe Flash Player


hoooohh.. for saving (let's call it "saving" instead of downloading and or capturing) Windows Media and or Real Media streams, there are better [sic] [sorry] tools out there than WM Recorder. I know 2 better. Well. At least 1. (the other one of the 2 is WM Downloader, by a Chin*se coder/company). I've tested WM Recorder but i am not really happy with the GUI and ease of use. And download results. In fact, downloading WM/RM from rtsp or mms 100% correctly (exact server file copy, crc32) is high art and all commercial tools (except for 1) on the market (NNetXFer/NetTransport, HiDownload , WM Recorder, WM Downloder, Replay Media Catcher (RMC) 3, RMC4, FlashGet, FlashGot, Thunder, Orbit Downloader, InternetDownloadManager, DownloadHelper.net, etc etc) dont do a 100% perfect job. They do a 99.6% job, and files play in their respective applications (WMP, RP), so why would the average he or she dare to complain? no big deal, right? Well, for techies and perfectionists (and maybe i am ) such a download result is dissatisfactory. ((In order to know whether a file is 0.4% different (crc32) from the original server file or 100% identical with it, you, of course, need to possess the original server file as reference; otherwise any attempt to do comparisons isnt valid. hehe. but that's another story ))

[...]

Thanks for the explanation. I will have to read more on this (jaksta documentation, replay media catcher help/support). I see the difference. If there is no quality loss (in theory), then the files should be 100% exactly the same, right? (with the Downloading Mode being the preferred one because it's so much faster and doesnt need any flash player once the download has started)

For the sake of confirming this claim, i need to verify and test it. Now i need a url...

EDIT: i've tested this url (MTV: nelly_furtado/nelly_furtado_night_is_young_flv_4_3)
Code:
http://www.mtv.de/videos/22202369-night-is-young.html
The recorded FLV by RMC is 39 Bytes bigger in size than the downloaded FLV by direct rtmp downloaders (
GetFLV, etc.). Binary visual comparison reveals that the bodies are absolutely the same; just the headers (meta data et al.) differ. After extracting the raw media data from the FLV packages (here: mp3, avi, txt), then indeed the raw files are 100% the same (SHA-519), respectively.

ok cool. so why do i need GetFLV (costs money!) or rtmpdump if RMC (costs more money!!) can download secured rtmp?
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