Re: [activities] Re: [SLUG-ANNOUNCE] Re: Experimental Live video streaming from SLUG tomorrow!

Want to help add them to jwplayer? :P

Tim

On 27 May 2011 20:23, Silvia Pfeiffer <[email protected]> wrote:

> Yeah, we're about to introduce such stats into the HTML5 spec.
>
> Both Chrome and Firefox actually have such stats already, but they are
> not standardized yet.
> http://blog.pearce.org.nz/2011/03/html5-video-painting-performance.html
> and
> https://bugs.webkit.org/show_bug.cgi?id=53322
>
> In essence, Mozilla have implemented the following statistics into Firefox:
>
>    mozParsedFrames - number of frames that have been demuxed and
> extracted out of the media.
>    mozDecodedFrames - number of frames that have been decoded -
> converted into YCbCr.
>    mozPresentedFrames - number of frames that have been presented to
> the rendering pipeline for rendering - were "set as the current
> image".
>    mozPaintedFrames - number of frames which were presented to the
> rendering pipeline and ended up being painted on the screen. Note that
> if the video is not on screen (e.g. in another tab or scrolled off
> screen), this counter will not increase.
>    mozPaintDelay - the time delay between presenting the last frame
> and it being painted on screen (approximately).
>
>
> Webkit have implemented these:
>
>    webkitAudioBytesDecoded - number of audio bytes that have been decoded.
>    webkitVideoBytesDecoded - number of video bytes that have been decoded.
>    webkitDecodedFrames - number of frames that have been demuxed and
> extracted out of the media.
>    webkitDroppedFrames - number of frames that were decoded but not
> displayed due to performance issues.
>
> Maybe that helps. :-)
>
> Cheers,
> Silvia.
>
>
> On Fri, May 27, 2011 at 8:12 PM, Tim Ansell <[email protected]> wrote:
> > I have plans to build in a little debugger which asks you questions about
> if
> > the video presentation works and tries a bunch of other settings.
> > I get a lot more diagnostics from the flash stream (you can see it as the
> > bars which run across the top).
> > Tim
> >
> > On 27 May 2011 20:07, Silvia Pfeiffer <[email protected]> wrote:
> >>
> >> Hi Tim,
> >>
> >> I've managed to get it working reliably with the flash stream. But, as
> >> you know, I'd much prefer the html5 stream. :-)
> >>
> >> With HTML5, I get the stream and it works for a few minutes, but
> >> invariably stops and then just sits there. I run Firefox nightly,
> >> 6.0a1 build of 22nd May.
> >>
> >> It seems that the problem is that once the player stalls (probably
> >> because it runs out of buffered video data), it doesn't restart again
> >> when it has more buffered. It just goes into stalled mode. I say that
> >> because if I hit pause and play again, it recovers and plays again.
> >>
> >> Not sure what could be done to overcome this, but to be honest, it
> >> kinda works for me. :-)
> >>
> >> Nice work on the setup, btw!
> >>
> >> Cheers,
> >> Silvia.
> >>
> >>
> >> On Fri, May 27, 2011 at 6:05 PM, Tim Ansell <[email protected]> wrote:
> >> > Couple of tips,
> >> > The system supports HTML5 (H264, Ogg Theora and WebM) and Flash
> >> > streaming,
> >> > this should cover most desktop browsers. The system does not support
> >> > mobile
> >> > systems yet (which includes the iPad), it might work, but it's more
> >> > likely
> >> > it won't.
> >> > If you are having problems viewing the video, please try the following
> >> > things and send me a report.
> >> >
> >> > Try switching to the SD stream. You can do this two ways, one by
> >> > clicking
> >> > the HD button in the corner twice, or by going to
> >> > http://tims-video.appspot.com/slug?hdoff=True
> >> > Try switching to the Flash stream. You can do this by going
> >> > to http://tims-video.appspot.com/slug?flashonly=True
> >> > Try switching to both the Flash SD stream. You can do this by going
> >> > to http://tims-video.appspot.com/slug?flashonly=True&hdoff=True
> >> >
> >> > If the stream freezes at any time, please try and reload.
> >> > If you have other problems like the sound being quiet or the display
> >> > being
> >> > wrong in anyway, or if you can't get the stream to work, please send
> me
> >> > an
> >> > email with the following details;
> >> >
> >> > Browser Type (Chrome, Safari, IE, etc)
> >> > Exact Browser Version (a screenshot of the about page would be
> awesome!)
> >> > Operating System - as much detail as possible (IE Ubuntu Lucid 64bit)
> >> > The speed and type of Internet connection you have. (IE ADSL, Cable,
> >> > ADSL2
> >> > and 256k, 6M). You can find this information in your ADSL model.
> >> > Please go to  http://www.speedtest.net/ and send me the numbers the
> >> > widget
> >> > reports.
> >> > Anything else you think is important.
> >> >
> >> > Thanks
> >> > Tim
> >> > On 26 May 2011 10:01, Tim Ansell <[email protected]> wrote:
> >> >>
> >> >> Hello everyone,
> >> >> I'm currently trying to set up live video streaming for events held
> at
> >> >> Google like FP-Syd, SLUG and SyPy. Tomorrow at SLUG we are going to
> try
> >> >> a
> >> >> second round of testing. There is no guarantee that it will work at
> >> >> all, so
> >> >> please don't rely on the stream but if your bored and want to help
> out,
> >> >> please do join in!
> >> >> If you would like to participate in the trial, please go to the
> >> >> following
> >> >> URL from 6pm onwards;
> >> >>   http://tims-video.appspot.com/slug
> >> >> As a backup the following JustinTV channel should also be
> transmitting
> >> >> the
> >> >> same stream, please use the primary video channel to help with
> testing.
> >> >>   http://www.justin.tv/mithro1
> >> >> The system has twitter and IRC integration, so tweet with the #sydlug
> >> >> hashtag, and join the irc://irc.freenode.org/#slug IRC channel.
> >> >> Tim 'mithro' Ansell
> >> >
> >> > --
> >> > SLUG - Sydney Linux User Group Announcements List -
> http://slug.org.au
> >> > More info: http://lists.slug.org.au/listinfo/announce
> >> >
> >> --
> >> SLUG Activities
> >> Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
> >
> >
>

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