[mythtv-users] Should I be switching to 0.21?
pebender at san.rr.com
Sat Apr 5 18:21:47 UTC 2008
Tom Dexter wrote:
> On Sat, Apr 5, 2008 at 12:02 PM, Paul Bender <pebender at san.rr.com> wrote:
>> Tom Dexter wrote:
>> > I'm confused by the statement that slim is the same as 0.20. 0.20
>> > didn't even offer ffmpeg as a decoder did it? In any case, it would
>> > depend on what the users previous settings were.
>> In 0.20, "The Preferred MPEG2 Decoder" option "Standard" is ffmpeg.
>> > I'm still on 0.20.2. I'm using bob and libmpeg2. As I understand it,
>> > in order to get those exact settings in 0.21, I'd need to create a new
>> > profile group with only one profile for all resolutions that used
>> > xv-blit (I believe), libmpeg2 as a decoder, and bob as a deinterlacer.
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
> Ah...thanks for clearing that up. I decided to do a little testing on
> my 0.20.2 frontend (P4 3.0 Ghz w/hyperthreading enabled).
> Watching 1080i HD content with bob, it appears that the 'Standard'
> (ffmpeg) does use a bit more cpu than libmpeg2 that I've been
> using...about 10% more overall...certainly acceptable, but it does
> seem to use more.
> I've been a little concerned with all the talk about extra CPU usage
> in 0.21. I have the CPU to spare for sure, but my frontend's fan
> noise might start getting noticable if, for example, it went up by 15%
> or more.
I upgraded my frontends form 0.20.2 to 0.21 without changing any
software other than MythTV. Using the same MythTV settings as I did for
0.20.2, I have not seen any measurable increase in CPU usage on either
my two Athlon64 (single core) + NVIDIA 6150 (XvMC disabled) based
frontends, or my one VIA SP8000E (XvMC-VLD enabled) frontend.
From all the posts, I have not been able to tell whether there are
certain hardware configurations that have CPU usage problems, or whether
all the CPU usage problems can be attributed to compilation and
I know that when I updated MiniMyth, it took some configuration work and
a couple of patches (all but one of which has been included in fixes) to
get 0.21 to work as well as 0.20.2. Once I did, the improvements in DVD
menu support made it worth the hassle. I have yet to make much use of
the other improvements.
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