Mailing List Archive

On Friday 30 May 2003 07:36 pm, Jeff C wrote:
> Hello all,
>
> I also noticed that the system has a hard time with the mostly black screen
> at the opening credits of Curb Your Enthusiasm. Is anyone else
> experiencing this? I am encoding with a PVR 250 ona Duron 1Ghz machine
> with 384MB of RAM.
>

I am. I had posted earlier about issues that I was having with choppy audio.
After some further review it appears that i'm experiencing the same thing you
are. I only get choppy audio/video on dark scenes. Basically, the more
black in the video the worse things get.

I also use a PVR 250, but i am using a p4 2.4GHz with 512MB of RAM. The
system does not appear busy when this happens, but maybe i'm just not looking
in the right places.

see:

http://www.gossamer-threads.com/archive/MythTV_C2/Users_F11/choppy_audio_only_with_mythtv_P64091/

for more details on my hardware.

Anyone have any ideas?

-Jesse

Jesse Arnett wrote:

>On Friday 30 May 2003 07:36 pm, Jeff C wrote:
>
>
>>I also noticed that the system has a hard time with the mostly black screen
>>at the opening credits of Curb Your Enthusiasm. Is anyone else
>>experiencing this? I am encoding with a PVR 250 ona Duron 1Ghz machine
>>with 384MB of RAM.
>>
>>
>I am. I had posted earlier about issues that I was having with choppy audio.
>After some further review it appears that i'm experiencing the same thing you
>are. I only get choppy audio/video on dark scenes. Basically, the more
>black in the video the worse things get.
>
>I also use a PVR 250, but i am using a p4 2.4GHz with 512MB of RAM. The
>system does not appear busy when this happens, but maybe i'm just not looking
>in the right places.
>
have you also changed your bitrate/bitrate_peak in the ivtv driver?

cheers,

CraigL->Thx();

On Tuesday 03 June 2003 02:53 pm, Craig Longman wrote:
> Jesse Arnett wrote:
> >I also use a PVR 250, but i am using a p4 2.4GHz with 512MB of RAM. The
> >system does not appear busy when this happens, but maybe i'm just not
> > looking in the right places.
>
> have you also changed your bitrate/bitrate_peak in the ivtv driver?

Craig,

Yes, I noticed a related thread on the dev list and tried some different
bitrates. Concensus seemed to be that 8000 kbps worked best. It does seem
better at higher bitrates, but it's still pretty noticeable. The lower the
bitrate the choppier things get overall.

Is there a bitrate setting you recommend?

-Jesse

Jesse Arnett wrote:

>On Tuesday 03 June 2003 02:53 pm, Craig Longman wrote:
>
>
>>Jesse Arnett wrote:
>>
>>
>>>I also use a PVR 250, but i am using a p4 2.4GHz with 512MB of RAM. The
>>>system does not appear busy when this happens, but maybe i'm just not
>>>looking in the right places.
>>>
>>>
>>have you also changed your bitrate/bitrate_peak in the ivtv driver?
>>
>Yes, I noticed a related thread on the dev list and tried some different
>bitrates. Concensus seemed to be that 8000 kbps worked best. It does seem
>better at higher bitrates, but it's still pretty noticeable. The lower the
>bitrate the choppier things get overall.
>
hm, so you haven't changed it. 8Mbps/16Mbps seems to work best,
although i use 8/12 now and it seems to work fine, although the files
are hardly any smaller.

>Is there a bitrate setting you recommend?
>
>
just whatever works best! i found 8 good. its strange though, i'm
pretty sure its not a proc bottle neck, and the fact that you're on a
p4@2.4 (i'm on an athlon@1) seems to confirm it. perhaps the new code
issac had for syncing will improve things. i should try out the files
in mplayer to seem what they do there, if i can pluck up the courage to
try and compile and install it.

cheers,

CraigL->Thx();

On Tuesday 03 June 2003 06:58 pm, Craig Longman wrote:
> just whatever works best! i found 8 good. its strange though, i'm
> pretty sure its not a proc bottle neck, and the fact that you're on a
> p4@2.4 (i'm on an athlon@1) seems to confirm it. perhaps the new code
> issac had for syncing will improve things. i should try out the files
> in mplayer to seem what they do there, if i can pluck up the courage to
> try and compile and install it.

I've had good results with 4.5/6 as the avg/max bitrates on my 250..

Isaac