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

Sure!

Tim

On 27 May 2011 20:36, Silvia Pfeiffer <[email protected]> wrote:

> Ah ... hmm ... Jeroen is already on top of it. He's waiting for the
> spec and the browsers to follow. I wouldn't be surprised if he already
> has support for these browsers. Want me to put you in contact?
>
> Silvia.
>
> On Fri, May 27, 2011 at 8:31 PM, Tim Ansell <[email protected]> wrote:
> > 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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