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SRT Video Transport Protocol Open-Sourced

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  • SRT Video Transport Protocol Open-Sourced

    Phoronix: SRT Video Transport Protocol Open-Sourced

    In aiming to enhance online video streaming, the SRT video protocol has been open-sourced and an alliance forming around that for low-latency video...

    http://www.phoronix.com/scan.php?pag...T-Open-Sourced

  • #2
    Anyone have any idea about patents for this? "Ctrl+F" didn't find the word in either article. Having it open-sourced doesn't mean much if you can't implement it without paying a licensing fee.

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    • #3
      It'll be interesting to see what they mean by low latency. It would be nice to have something with shallower buffers than your typical DASH (which suffers from requiring a large number of transient TCP connections).

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      • #4
        Cool, but the name is already taken. STR is a form of text file containing subtitles for movies. Has been for decades.

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        • #5
          yes, name collisions in tech are common... it is usually not a problem as usually they refer to somewhat different techs... it still a pain

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          • #6
            Originally posted by eydee View Post
            Cool, but the name is already taken. STR is a form of text file containing subtitles for movies. Has been for decades.
            Don't you mean srt?

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            • #7
              So it's just a protocol and it's codec agnostic?

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              • #8
                Originally posted by shmerl View Post
                So it's just a protocol and it's codec agnostic?
                It's a transport protocol used with MPEG-TS in place of UDP. You don't loose packets like you do with UDP, but it offers some nice features that you do not get with plain TCP. MPEG-TS is what limits your codec options, not the transport protocol.

                I've used their Makito-X appliances, and the latency for 2 way communication is lower than anything else I've seen out there. It's like your talking face to face. Except that the video is high quality fixed frame-rate video suitable for broadcast. The low latency and high quality come at the expense of a fairly high bitrate.
                Last edited by FishB8; 04-24-2017, 05:51 PM.

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                • #9
                  Originally posted by TheBlackCat View Post
                  Anyone have any idea about patents for this? "Ctrl+F" didn't find the word in either article. Having it open-sourced doesn't mean much if you can't implement it without paying a licensing fee.
                  I suspect if their plan was to earn royalties from patents they wouldn't have licensed the library under the LGPL.

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                  • #10
                    Originally posted by (tpm) View Post

                    I suspect if their plan was to earn royalties from patents they wouldn't have licensed the library under the LGPL.
                    Copyright law and Patent law are 2 separate things. LGPL is copyright. You can enforce patent royalties even though something is released under the LGPL copyright license. For instance, the x264 encoder is released under and open-source copyright, but if you use it you are still expected to pay patent licensing fees to the various patent holders.

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