[mythtv-users] Strange Live Tv synchronization problem
Matthew K. Lee
fratlee at gmail.com
Wed Jul 13 14:04:27 EDT 2005
On 7/13/05, Matteo <mosarg at gmail.com> wrote:
> This is the first time for me in this list.
> I just set up my first myth box and almost everything works fine.
> My system is composed of a VIA EPIA ML8000 PVR-250
> 512 Mb DDR 200 GB hdd maxtor.
> Tv recordings are perfect and playbacks too.
> I use via unichrome driver for hw accellerated mpg2 playback and cpu
> utilization is around 20 %.
> The only problem I noticed regards Live Tv: for 20 30 seconds the output
> is perfect, audio and video are perfectly syncronized, then for 1-2
> seconds Myth drops frames and audio becomes choppy to become perfect
> again for other 20-30 seconds and this strange beheaviour repeats for as
> long as I watch Live TV CPU utilization is around 30 40 % (res 720x 576).
> My hdd settings are :
> multcount = 16 (on)
> IO_support = 3 (32-bit w/sync)
> unmaskirq = 1 (on)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 24792/255/63, sectors = 398297088, start = 0
> I added this line to /etc/sysctl.conf
> to always leave some memory free.
> I don't know what to anymore.
> Big big thanks to anyone answering.
> mythtv-users mailing list
> mythtv-users at mythtv.org
I've noticed the same sort of thing after I change channels in LiveTV
mode. I've found that it will ususally go away if I pause LiveTV for
a second (or two) to let the buffer fill.
More information about the mythtv-users