I ended up stealing Mo's ideas about open source broadcast*, having read about
them on this list, and am now working to get a similar concept** production
ready and deployed at well known names in the US and Europe..
* https://github.com/nexgenta/txsuite/blob/master/README.mdown**
Can I pick your brains please. :)
I'm trying to work out what technology to use;
Situation:
Mobile Linux computer connected via 3G/GPRS to internet.
The computer is likely to encounter fluctuating
connectivity where it connectivity drops between low GPRS
signal, full HDPSA signal and
I think the iPlayer app in MythTV or Boxee should let you watch using hardware
acceleration.
--- On Mon, 10/1/11, Christopher Woods chris...@infinitus.co.uk wrote:
From: Christopher Woods chris...@infinitus.co.uk
Subject: RE: [backstage] Enabling NVIDIA GPU acceleration on iPlayer videos...
There's always get_iplayer.py. You can pipe the output straight into mplayer.
--- On Mon, 10/1/11, Christopher Woods chris...@infinitus.co.uk wrote:
From: Christopher Woods chris...@infinitus.co.uk
Subject: RE: [backstage] Enabling NVIDIA GPU acceleration on iPlayer videos...
To:
Wii isn't too difficult to figure out, though it's more complicated. I have
actually had a little look at Wii iplayer myself to see how H.264 decoding is
done on such a feeble device. There are lots of layers of encrypted data but
people have figured out how to decrypt them.
I think the ipad is
On 18-Jul-2010, at 12:05, Brian Butterworth wrote:
Personally, whilst there are a few design decisions I
might personally have done differently, I think the change
is clearly one for the better.
this.
M.
Henry Ford: If I had asked my customers what they wanted, they would have
Does anyone else see this as the BBC effectively
bailing out other broadcasters
by providing a common platform backed with licence fee
funded content and development?
No, this is what I'd expect the BBC to do.
It serves the public when market-based squabbles over
alternative
Does anyone else see this as the BBC effectively bailing out other
broadcasters by providing a common platform backed with licence fee funded
content and development?
It's unlikely such a wide group of companies would ever reach a consensus
otherwise without the BBC. Anything similar would
a) broadcast in other countries without this scheme or an
equivalent
b) distributed widely prior to it hitting the UK
And on BBC HD on satellite to the UK and large parts of Europe.
The horse-and-cart makers still can't stand the existence of the car...
Won't be long until the DRM is
I reported this a few weeks ago, on a different story.
It never got
fixed, and the problem keeps happening.
Forward your complaint to the Daily Mail ;)
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What actually needs to happen is that Open Source needs to call the BBCs bluff
by actually implementing the SWF verification stuff and producing an
application with a compelling user experience that matches or is better than
anything else on offer.
--- On Thu, 27/5/10, Richard P Edwards
I’ve been slowly rewriting the build logic to be
auto{conf,make}+libtool-driven (I’m targeting an expanded
set of platforms — OpenSolaris, Mac OS X and Linux — so
autoconf helps an awful lot).
There was shock amongst other x264 developers (myself not included since I
don't know enough about
I see that the new World Cup site is up:
http://news.bbc.co.uk/sport1/hi/football/world_cup_2010/video/
Is the new 6mbit 1024x576 VP6 video (why VP6 not H.264?) on the first page
going to be the standard for World Cup video?
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And now the H.264/AAC workflow is
in place... How about bumping the audio up to AAC+?
AAC at 128kbps should be transparent provided the encoder is up to scratch.
Making it AAC+ would probably keep the audio the same quality or perhaps reduce
it slightly in my opinion because the algorithms it
We're going to be committing Blu-Ray compatible encoding in x264 soon, which
will be the first open-source Blu-Ray compatible encoder, and we plan to
release a free downloadable Blu-Ray image to coincide with this. We really
don't want to release something like Big Buck Bunny or Elephants Dream
From: Brian Butterworth briant...@freeview.tv
Subject: Re: [backstage] RE: BBC Flash video and deinterlacing - is this
really the best we can get?
To: backstage@lists.bbc.co.uk
Date: Sunday, 7 March, 2010, 19:15
It occurred to me the other day that one
solution to the problem might be to
Clearly you need a motion-compensated deinterlacer. ;-)
It's still not going to be as good in 25p as it will in 50i in my opinion
unless the scroll speed is reduced. Though judging by recent attempts to
destroy end credits on virtually every channel I doubt slower speeds will be
Don't TV Catchup
have both a low- and high- quality streams, where the HQ
ones are
interlaced?
Not aware of multiple streams -
only ever watch at the
highest possible quality :) However, it
certainly doesn't look like
it's been encoded as interlaced (which would make
absolutely
--- On Sun, 28/2/10, Christopher Woods chris...@infinitus.co.uk wrote:
From: Christopher Woods chris...@infinitus.co.uk
Subject: RE: [backstage] A quick Dolby E question
To: backstage@lists.bbc.co.uk
Date: Sunday, 28 February, 2010, 18:05
SurCode's stuff can produce 24-bit Dolby-E iirc.
A teeny bit off-topic but I'm sure there are people on the list that know the
answer.
Does 24-bit Dolby E actually exist? If so what produces it?
Thanks in advance.
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--- On Tue, 9/2/10, Anthony McKale anthony.mck...@bbc.co.uk wrote:
From: Anthony McKale anthony.mck...@bbc.co.uk
Subject: Re: [backstage] BBC Flash video and deinterlacing - is this really
the best we can get?
To: backstage@lists.bbc.co.uk
Date: Tuesday, 9 February, 2010, 10:48
You'll find
, Kieran
Kunhya wrote:
There are plenty of free pixel-adaptive deinterlacers
out there though such as Yadif or a decomb filter could be
used. There are even some painfully slow motion compensated
ones that would be probably be in the same league as
expensive snell and wilcox equipment.
If you
For 720p25 you might need more than 3.5Mbps for more
demanding scenes. (Except increasing the bitrate or using a
better encoder will make iPlayer look better than the
broadcast...)
You do get an awful lot better results when you
are not compressing in real time, of course, because you
can
What I don't understand is that of the three main desktop
platforms
Firefox gets installed on - Windows and Mac - both have
H.264 decoders
*on the machine already* in the form of Windows Media and
QuickTime
APIs. Microsoft and Apple have presumably solved whatever
licensing
problems exist
Having said all that, my entirely subjective conclusions at
the moment are that the 720p video I get out of ffmpeg+x264
when encoded as Baseline at around 3Mbps[0] compares
extremely favourably to the iPlayer HD content (which is
High profile, if memory serves) at the same bitrate. I
don’t
Web video has never really been open, unencumbered
and free. We've had Real Networks RM format, Apple's
QuickTime, Microsoft's Windows Media Video (now standardised
as VC-1), the DivX and XviD codecs, and Adobe Flash among
others. There might never be one open standard, simply
because
I like the way Ofcom have totally missed the point about Linux/Open Source
presuming it refers to STBs running Linux.
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Unofficial list archive:
Well, it would, and that's the easiest way to make the
point about it.
The fact it'll affect people running MythTV et al
themselves *as well*
is less of a concern for them (or the BBC).
What I mean is most (all?) the complaints before were from people wanting to
watch on a Linux PC.
Well, it would, and that's the easiest way to make
the
point about it.
The fact it'll affect people running MythTV et al
themselves *as well*
is less of a concern for them (or the BBC).
What I mean is most (all?) the complaints before were
from people wanting to watch on a
a) VLC, when _not_ using the GPU, doesn’t struggle
remotely as much as Flash
b) VLC also overlays text and graphics over video
Again using the GPU for compositing.
c) YV12-RGB _can_ be tightly optimised if you’re
crazy enough to do
things that way around
The key there is that the
On which platforms? As I said, I’m not talking about
Windows *at all* here.
It uses an appropriate renderer for the platform, which by default would be GPU
accelerated. (I don't feel like looking up the names for each one right now
though...)
…yes. It does it backwards. Given a focus on
--- On Wed, 30/12/09, Brian Butterworth briant...@freeview.tv wrote:
Why the Flash iPlayer client can't use the
hardware acceleration. I get lots of dropped frames
watching through the iPlayer Desktop.
The new Flash 10.1 beta uses DXVA (DirectX Hardware Video Acceleration).
However it has
This is windows-only right now (presumably because
Apple won't give Adobe access to the necessary APIs).
Er, what? Where did that presumption come from?
Nothing else on the Mac or Linux has a problem with video
compositing.
VLC, which does it entirely in software too, has _no_
issues.
No obvious statement that it can play the upcoming Freeview
HD content but I presume that this is the plan.
I'm not sure where they're going to get DVB-T2 chipsets from...
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What is so important about the content/metadata ingest and delivery system that
is the iPlayer that it needs to be licenced as opposed to being developed
in-house at a broadcaster?
--- On Tue, 20/10/09, David Tomlinson d.tomlin...@tiscali.co.uk wrote:
From: David Tomlinson
http://www.guardian.co.uk/technology/2009/sep/29/bbc-hd-encryption
Ok I know we talked about it before but here he (cory) is again, but
this time in the Guardian.
Cheers,
Secret[] Private[] Public[x]
Ian Forrester
Senior Backstage Producer, BBC RD
01612444063 | 07711913293
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