[mythtv-users] XvMC and libmpeg2 to be dropped in 0.25

Nick Rout nick.rout at gmail.com
Sun Dec 5 21:29:23 UTC 2010

On Mon, Dec 6, 2010 at 10:00 AM, Brian Wood <beww at beww.org> wrote:
> On Sunday, December 05, 2010 01:50:56 pm Newbury wrote:
>> Sent from my iPhone
>> On 2010-12-05, at 11:28, Raymond Wagner <raymond at wagnerrp.com> wrote:
>> > On 12/5/2010 09:33, James Courtier-Dutton wrote:
>> >> I agree that VDPAU (and similar) and OpenGL are the way forward
>> >> for HD
>> >> content, but Xv and XvMC are still perfectly good for SD content.
>> >> For example, I have a small TV in the Kitchen. There is no
>> >> sensible reason for me to purchase a HD capable STB when the TV
>> >> is only 17 inches and has no HDMI connector.
>> >
>> > It has nothing to do with the content it is usable with, and
>> > everything to do with the direction we want to take the
>> > presentation of MythTV.  Xv has no OSD support to speak of.  Any
>> > overlays must be rendered to the size of the video, converted to
>> > YUV, and baked into the video.  XvMC has OSD support, but it is
>> > very primitive, and ends up being more limiting than Xv.  The fact
>> > that XvMC has been unnecessary for any desktop processor made in
>> > the past five years, and $25 gets you a video card plenty capable
>> > of handling the OpenGL painter, has just made the decision an
>> > easier one.
>> This cuts off anyone using a laptop with an Intel video chipset. For
>> quite a while ( versions 2.5 through 2.8) XvMC was turned off. In
>> 2.9.1 it works reaonably making my 1.8Ghz X-61tablet a reasonable
>> myth platform.
>> I would hate to lose that. And Lenovo does seem to make laptops with
>> nvidia chipsets and Lenovo is the only maker offering the trackpoint.
>> A Venn diagram of nvidia and trackpoint has no intersection!
>> Geoff
> Yeah. Many Myth users have "secondary" machines that might not meet
> today's standards.
> It's like in the TV business, we all figured that everyone had a color
> set, and so we didn't worry too much about how things would look in B+W,
> forgetting that a lot of monochrome sets still existed in bedrooms,
> kitchens, kid's rooms etc.
> Backwards compatibility is always desirable. Perhaps there should be a
> stripped down version of Myth's frontend that would still support the
> latest database schema and other protocols, but would run on minimal
> hardware, even without the latest bells and whistles, but still usable
> with a reduced feature set.

I guess one of the promises of upnp is the abilty for any client with
a upnp stack and a media player to watch recordings and videos, using
whatever player is efficient on that client. Other players may still
support xvmc.

There is also the flash streaming available in mythweb.

No you don't get a full frontend, but if these are not the main living
room experience, you may be able to live with that.

Come to think of it xvmc has a usable front end, i don't know if they
still (or ever) support xvmc, but it could be worth exploring.

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