[mythtv-users] Quick opinions

Alan Marchiori alan at alanmarian.com
Tue Jun 2 03:46:39 UTC 2009

OK, ran into issues, but I have to stop playing for now.

here was the cmd I used:
mplayer -benchmark -ao alsa:device=hw=1.0 -vfm ffmpeg -fps 29 -vo gl2
-vf scale=720:480 -lavdopts skiploopfilter=all:fast=1 BBCHD-sample.mpg

adding -lavdopts skiploopfilter=all:fast=1 improved output

I also updated x264 and ffmpeg to latest versions

the benchmark output was:
BENCHMARKs: VC:  34.573s VO:  14.211s A:   0.452s Sys:   2.677s =   51.914s
BENCHMARK%: VC: 66.5968% VO: 27.3746% A:  0.8710% Sys:  5.1576% = 100.0000%

not sure exactly what this means?  Anyway video was watchable (not
perfect).  Audio out of sync, however, it complained "FPS not
specified in the header or invalid, use the -fps option."  So i just
put -fps 25 to make it play something.  I changed the value and it
didn't seem to have any noticeable affect.  (using -fps 60 seems the

But the major issue was it was not using both cpus; top output while
playing looks like this:
Tasks: 161 total,   3 running, 158 sleeping,   0 stopped,   0 zombie
Cpu(s): 50.4%us,  3.0%sy,  0.0%ni, 46.1%id,  0.3%wa,  0.2%hi,  0.0%si,  0.0%st
Mem:    882164k total,   873532k used,     8632k free,    13280k buffers
Swap:  3903784k total,     2772k used,  3901012k free,   385328k cached

 4928 myth      20   0  349m  58m  21m R  100  6.8   0:17.21 mplayer
 3712 root      20   0  141m  34m  14m S    3  4.0   0:21.76 Xorg

One CPU is at 100% and the other is mostly idle.  Not sure why the
other CPU is not helping out.  That's why I installed the latest
ffmpeg.  It seems like it should be possible since it is almost
working using just one cpu.

One possible issue with the cpu's.... I had 2x1GB RAM in this box, but
I borrowed one DIMM for another machine.  So it is just running one
DIMM.  This means it only has one memory channel.  Possibly this is
significant for this application?

On Mon, Jun 1, 2009 at 1:34 PM, belcampo <belcampo at zonnet.nl> wrote:
> cat part1.ts part2.ts part3.ts > BBCHD-2min.ts
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> mythtv-users mailing list
> mythtv-users at mythtv.org
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