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

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
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>> >
>> >
>
>
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