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Load-testing Steam Broadcasting

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  • Load-testing Steam Broadcasting

    In order to do some load testing on Steam Broadcasting, we're going to be streaming the Qualifiers (via DotaTV) at this link:

    This is a 1920x1080 60fps stream, and in addition to doing some load testing, we're interested in your feedback:
    • How do you feel about the video quality? Resolution, framerate, color, contrast, etc.
    • How is your connectivity to the stream? Do you experience lag? Reconnections? Down-rezzing? (if so, where are you located?)
    • How is the transcode quality?
    • Do you have any other feedback about the stream?

    The machine streaming this will be auto-spectating games, so it should switch from game to game as they finish, and will be broadcasting the English casters.


  • #2
    Will Steam Broadcasts be linked for tournament item drops like they are for Twitch?


    • #3
      Quality is cool, looks better than the actual twitch stream

      it does however suffer the dotatv lag which makes me switch to twitch all the time. since i dont know what any of the above terms mean, i'lkl just describe my experience with simple words: it still doesnt look as clean/sharp as if i tuned into dotatv myself through ingame. it's still "blurry"? here and there (if that makes any sense, and yes I have 1080p turned on and a good internet connection)

      the stream itself is completely lag free, but the video lags much like dotatv does


      • #4
        How do you feel about the video quality? Contrast looks slightly too high. Resolution is acceptable. I am getting a lot of framerate stuttering.

        How is your connectivity to the stream? Connection seems mostly fine, no buffering, just the major stuttering issue. Toronto, Canada.

        How is the transcode quality? I can't comment.

        Do you have any other feedback about the stream? I am suffering a great deal of visual stuttering.


        • #5
          wow this stream much smoother that twitch


          • #6
            Looks much better for me than the current twitch streams, the contrast still looks a bit dark. It's very noticeable with items and the hero portraits at the top of the UI, some questions/suggestions:

            1. Stop it from defaulting to 480p.
            2. Link spectating drops, similar to twitch.
            3. Don't allow people to spam chat

            The stream works fine in chrome but it gets quite laggy using steam @1080p and chat disconnects quite a bit
            Last edited by Gsx; 05-29-2015, 10:26 AM.


            • #7
              valve pls enable drops for this steam stream it'd encourage people to come

              also everything runs smoothly at 1920x1080 on 1gbps connection
              Last edited by virtualghost; 05-29-2015, 10:09 AM.


              • #8
                Your web browser does not support the minimum set of features required to watch this broadcast.

                You can watch this broadcast from inside the Steam Client or, for a list of supported browsers, please visit the Broadcast FAQ.

                Mozilla Firefox verison 38.0.1


                • #9
                  I`m having some kind of fps drops in all the quality options. 20mb fiber, live in brazil.


                  • #10

                    Watching 1080p. Notice some lag, not sure if it's the stream or dotatv. The dota servers are down right now (BU v Alliance) so that may be a bit of the dotatv lag. The transcodes look good at most levels, nothing crazy standing out. Audiowise, we are getting the robot voices somewhat common in DotaTV. Colors on stream are good, resolution is good, almost as sharp as in game.

                    All in all, stream looks good, but its showing off the issues native to DotaTV.


                    • #11
                      Took a bit longer to load but overall everything was awesome(1080p) and I was watching the TI5Sange on source at the same time.Had no problems.


                      • #12
                        Will be elegible to get tournament drops by watching from here too?


                        • #13
                          So far the Auto quality is always flopping around different settings constantly which is annoying. I am located in Germany.

                          When it does not constantly change settings it is a joy to watch. No stutter or lag or constant waiting for loading. It was all good thus far!

                          -Edit I spoke too soon now the stream is hanging for everyone and I constantly get "Reconnected" in the chat
                          Last edited by Hotshoot911; 05-29-2015, 10:18 AM.


                          • #14
                            -Great overall stream quality (1080p)
                            -Got lag spikes after game 2 of Burden vs Alliance (guess that was on your the broadcasting side) and for several seconds at a time during the next game.
                            -Good color rendering and contrast
                            -Audio quality was fine as far as I can tell
                            Last edited by 1401Ger; 05-29-2015, 10:20 AM.


                            • #15
                              How do you feel about the video quality? Resolution, framerate, color, contrast, etc.
                              - Video quality is good compared to twitch but is taking it's toll on the bandwidth too. I can watch high on twitch without lagging and it's stuttering abit in 480p for me.
                              (2mbps connection)

                              How is your connectivity to the stream? Do you experience lag? Reconnections? Down-rezzing? (if so, where are you located?)
                              Connectivity is fine. Audio is abit choppy sometimes on 480p. Literally unwatchable on 720p. Got an error that Video can't be played due to an unexpected error while scrolling up and down in the steam client.(I am watching in steam client since it doesn't support Mozilla).

                              How is the transcode quality?
                              480p is kinda blurry to the point of unwatchable for me. if it could use some less bandwidth maybe?

                              Do you have any other feedback about the stream?
                              No Kappa? BibleThump BabyRage