On 5/22/05, <SB> Childe Roland <[EMAIL PROTECTED]> wrote: > I get slow framerates all the time tho. It's worst when I change > channels, but I usually get about 20-25 fps just watching a recorded > show or watching live TV. Could that be due to my HDD? > > On 5/22/05, Darren Black <[EMAIL PROTECTED]> wrote: > > On 5/22/05, <SB> Childe Roland <[EMAIL PROTECTED]> wrote: > > > I am having a problem with my new KnoppMyth box. > > > > > > 1. Everytime I change the channel the video and sound skip some. > > > Sometimes this continues, but can be fixed by pausing the video and > > > waiting a few seconds > > > 2. Both Live tv and recorded seem to have extremely low frame rates. > > > The video is much more choppy than it should be > > > > > > I don't think it is my system (see specs below) and the TV Tuner > > > should have hardware encoding. > > > > > > I think these problems are both related to the HDD. When I run the > > > "hdparm -Tt" test I get a cached read in the 400's (MB/sec), but the > > > timing buffered disk reads only gives me between 9 and 20 MB/sec. > > > The drive is extremely old and only supports ATA 33. > > > > > > Could this be the problem?? I'd like to upgrade to get more space, but > > > it won't be worth it if it's not going to give me a full 30 fps. Also, > > > is it perhaps a setting in MythTV that I have missed? > > > > > > > > > My specs - > > > Athlon Sempron 2400+ > > > 512 MB DDR 333 > > > 20 GB ATA-33 HDD > > > Hauppauge PVR-150 (non MCE) > > > > > > Machine Status: > > > Load: 1.30, 0.61, 0.23 > > > RAM: 501MB, 396 MB used, 105 MB (20%) free > > > Swap: 490 MB, 0 used > > > -- > > > ============================= > > > <SB> Childe Roland > > > "I will show you fear in a handful of jellybeans." > > > _______________________________________________ > > > mythtv-users mailing list > > > [email protected] > > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > > > **Crossposting to ivtv-devel** > > > > I am experiencing the same problems. We have similar setups, but my > > harddisks are fairly new and really not slow. I've crossposted to > > ivtv-devel because I think the issue is related to the ivtv driver. > > Mythfrontend outputs 'prebuffering pause' whenever the video stutters. > > As you say, this only happens when I change channel, and is cured by > > pausing a couple of seconds. > > > > From my browsing in the ivtv posts, I get the idea this has something > > to do with vbi code (given when this error started occuring) and what > > people are talking about generally ;) Is there anything that people > > who really arent looking to use CC/TXT can do to the driver to make > > this error go away? I perhaps have the wrong idea here... feel free to > > let me know if I have ;) > > > > Regardless... Any suggestions would be welcome. > > /drdaz > > > > > -- > ============================= > <SB> Childe Roland > "I will show you fear in a handful of jellybeans." >
Possibly... I'm not sure where you live, but if you live in a PAL country (I do), the framerate should be 25fps. I have noticed that compared to normal TV my video looks like its running at a lower framerate... But I had just kind of accepted that. The amount of data that needs to be written and read to record and playback one video stream at a time just isnt that high... My guesstimation says DVD video would require approximately 1 megabyte/sec to be written and read concurrently. Not sure of the spec of ata33, but I've got a feeling it can handle that. You could try reducing the bitrate of the video in recording profiles to check I guess. /drdaz ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_idt12&alloc_id344&op=click _______________________________________________ ivtv-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ivtv-devel
