[foms] HLS and HLS patents

[Silvia Pfeiffer]

I've asked and they will investigate the rights side of things.

They have also pointed me to the MPEG effort in the space, which is
supposedly media file format independent. There is no public spec available
at this stage and it is unclear what the rights situation will be. But I was
told it builds on the 3GPP spec in this space. That is available at
http://www.3gpp.org/ftp/Specs/archive/26_series/26.234/26234-940.zip . The
file format is called "MPD" for Media Presentation Description and below is
an example. I am rather un-excited by its complexity in comparison to m3u8
actually:

<?xml version="1.0" encoding="UTF-8"?>

<MPD

type="Live"

baseUrl="http://www.example.com"

minimumUpdatePeriodMPD="PT20S"

minBufferTime="PT10S"

mediaPresentationDuration="PT2H"

availabilityStartTime="2010-04-01T09:30:47Z"

availabilityEndTime="2010-04-07T09:30:47Z"

timeShiftBufferDepth="PT30M"
xsi:schemaLocation="urn:3GPP:ns:PSS:AdaptiveHTTPStreamingMPD:2009
3GPP-MPD-r1.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="urn:3GPP:ns:PSS:AdaptiveHTTPStreamingMPD:2009">

<ProgramInformation moreInformationURL="http://www.example.com">

<Title>Example</Title>

</ProgramInformation>

<Period start="PT0S">

<Representation

mimeType="video/3gpp; codecs=s263, samr"

bandwidth="256000"

id="256">

<SegmentInfo duration="PT10S" baseURL="rep1/">

<InitialisationSegmentURL sourceURL="seg-init.3gp"/>

<Url sourceURL="seg-1.3gp"/>

<Url sourceURL="seg-2.3gp"/>

<Url sourceURL="seg-3.3gp"/>

</SegmentInfo>

</Representation>

<Representation

mimeType="video/3gpp; codecs=mp4v.20.9, mp4a.E1"

bandwidth="128000"

id="128">

<SegmentInfo duration="PT10S" baseURL="rep2/">

<InitialisationSegmentURL sourceURL="seg-init.3gp"/>

<Url sourceURL="seg-1.3gp"/>

<Url sourceURL="seg-2.3gp"/>

<Url sourceURL="seg-3.3gp"/>

</SegmentInfo>

</Representation>

</Period>

<Period start="PT30S">

<SegmentInfoDefault

duration="PT10S"

sourceUrlTemplatePeriod="http://example.com/$RepresentationId$/$Index$.3gp
"/>

<Representation

mimeType="video/3gpp; codecs=mp4v.20.9, mp4a.E1"

bandwidth="256000"

id="1">

<SegmentInfo>

<InitialisationSegmentURL sourceURL="seg-init-1.3gp"/>

</SegmentInfo>

</Representation>

<Representation

mimeType="video/3gpp; codecs=mp4v.20.9, mp4a.E1"

bandwidth="128000"

id="2">

<SegmentInfo>

<InitialisationSegmentURL sourceURL="seg-init-2.3gp"/>

</SegmentInfo>

</Representation>

</Period>

</MPD>


Silvia.

On Fri, Oct 15, 2010 at 5:30 PM, Jeroen Wijering
<jeroen at longtailvideo.com>wrote:

> That would be very helpful!
>
> The big issue I see with M3U8 is that it requires chunks to be transport
> streams. I presume this is not an open format?
>
> In terms of the functionalities and metadata provisions, m3u8 seems to have
> all that's needed.
>
> Kind regards,
>
> Jeroen
>
> On Oct 15, 2010 7:16 AM, "Silvia Pfeiffer" <silviapfeiffer1 at gmail.com>
> wrote:
>
> I agree that it may be a defensive patent of Apple and I don't know how
> strongly Apple wants to hold on to their IP there.
>
> It may be necessary to invent a new file format and not reuse m3u8, because
> http://tools.ietf.org/html/draft-pantos-http-live-streaming-01 says that
> derivative works are not allowed.
>
> I could try and find somebody in Apple to help direct the right way to
> approach this for Ogg and WebM.
>
> Silvia.
>
>
>
>
> On Fri, Oct 15, 2010 at 3:55 PM, Jeroen Wijering <jeroen at longtailvideo.com>
> wrote:
> >
> >
> > This fil...
>
>
> _______________________________________________
> foms mailing list
> foms at lists.annodex.net
> http://lists.annodex.net/cgi-bin/mailman/listinfo/foms
>
>
> _______________________________________________
> foms mailing list
> foms at lists.annodex.net
> http://lists.annodex.net/cgi-bin/mailman/listinfo/foms
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.annodex.net/cgi-bin/mailman/private/foms/attachments/20101015/0e10298c/attachment-0001.htm