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The most valuable ability of a resource constrained IP CCTV camera/network server is the multi-cast ability of a media stream to multiple destinations. The multi-cast is available only by using the RTP-over-UDP protocol - a one of several RTSP transports. Not only that, but also, the UDP transport is the best way of achieving the maximum throughput of a video/audio stream between a producer and consumer device over an IP network. In fact, the most recent and arguably the most widely accepted standard in the area of IP-based physical security is the ONVIF standard (www.onvif.org), which requires the UDP transport as mandatory for any product claiming compatibility the the ONVIF standard. Please review the topic and correct any unconfirmed claims.
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Description of DESCRIBE request asserts that the UDP transport is: "deprecated and very rarely used". As a person, who is actively involved in software development in the area of IP video surveillance and security products, I would like to assure you, that this information is completely incorrect.
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By the way, RTSP CAN be used to download files using http or ftp. You just ask the server for a describe, and get an SDP file back, which tells the location of a http or ftp server (I'm quite sure SDP allows this). You wouldn't initiate the download using RTSP once you have the SDP. (I'd be
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I removed it, because RTSP is NOT a "real time protocol" in this sense! As I explained above, RTSP is just the "remote". True, it's typically used with RTP to do the "real time streaming" part, but then this disadvantage is more appropriate with RTP.
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section. I'm planning on making that change very soon, but I wanted to let people know why I'm making the change. All of the "Real-" this and "Real-" that references in the first paragraph make for a confusing introduction to readers of the article.
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It seems to be implied (incorrectly) that RTSP will trigger an RTP stream exclusively. Suggest using the more generic "stream" nomenclature (mirroring RFC 2326) when discussing RTSP unless discussing something specific to RTP in regards to RTSP.
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RtpRtspStack. Google search results just show me same wiki pages as this one. So where do I find more information about RtpRtspStack? Does the author, who put the note to this streaming server in this article, make a typo error?
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Given the current page makes no mention of RtpRtspStack (and the only occurrence of 'stack' looks nothing like that), perhaps this comment needs to be deleted. --
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Okay guys I made the change. I cited the FFmpeg documentation, and removed all the chatter about no references. RTSP was already mentioned in
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The relationship between "RTSP" and "RTP" is confusing in this article (and in general). I'll accept my share of the blame for that.
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642:-over-UDP. Which has nothing to do with video quality, throughput or whatever else. Sigh. Time to fix the article again I guess.
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You missed what it talked about. You're referring (explicitly) about RTP-over-UDP, and instead the article referred to
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Seriously, you're comparing two things that have totaly different functions. RTSP is your remote, RTP is your TV.
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The main article needs to be updated as it indicates that FFmpeg supports RTSP but without documentation.
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Yes, this seems like dated information, based on your link. Any objections to changing the article? —
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on
Knowledge. If you would like to participate, please visit the project page, where you can join
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Let me answer that question with another question: How different is an airplane from an airport?
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589:Thanks! --
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