Because with LAV codec, live tv breaks up and pixellates. Apparently live tv isn't supported with LAV, although many report it to work just fine. Would be nice to use just one codec for everything, but it's not a show stopper.
I use LAV for H.264 live HDTV on a GT430 - it works fine. CUVID uses a lot of GPU performance, so try disabling 'high quality processing' or use DXVA2 (native) instead if that is causing problems. If it's not starting to play TV at all sometimes, try the alternative 'noStopMod50' TsReader.ax from http://forum.team-mediaportal.com/threads/experimental-tsreader-development.102693/#post-811296 Tony
I'm using 296.10 - WHQL with GT430 on my dev PC. Haven't spotted any issues (other than the HDMI is cropping out the audio as soon as there is no output which causes HDMI handshake on next time when there is audio - but that is a generic issue with all available Nvidia drivers).
Right, done yet more testing! Uninstalled Tesla drivers, and installed 301.24 drivers. Uninstalled SAF609. Installed LAV 50.1 filters. With CUVID acceleration on, still same problem. Unticked high quality, still same problem. Changed to DXVA2(native) and it works fine, although ticker tape on Sky News HD is a bit rougher than with PDVD12 codec. So, at least I can now use LAV codec exclusively but am at a loss as to why CUVID performs so badly! I'm using decent kit too - E8500 processor on a Striker II Extreme MB, with 8Gb RAM and a SSD for OS/Mediaportal.
Just curious what spec the pcie slot you have your gt430 in. I used to have stuttering issues with mine using CUVID when it was running in a pciex16@x4 (which is a pci16 slot but runs at x4 speeds). When I changed motherboard to one with a true pciex16, stuttering went away.
I had wondered that myself, but according to GPU-Z it is running at 16x The motherboard supports triple-sli so should be fine.
the latest of course i have no issues ever with my nvidia 430 GT ..i intentionally bought it over other cards because it has a heatsink instead of a fan(for less noise) and it supports CUDA(being nvidia) and supports VP4 (h264 & mpeg2 decoding) with CUVID option on in LAV codecs which are the BEST!
I have jumped to Nvidia drivers based just on them being newer and found all manner of things like sync issues and such. In my experience, newer is not always better. As further back in the thread, hacked Tesla drivers 'were' the most popular amungst people on these forums (and I currently still use these), but this weekend I'm going to try the 296.10 - WHQL Nvidia drivers Tony mentioned. The Live HD TV sync is really grinding me down now, as for all other file playback, h264 1080p etc, all plays excellently. I do wish I'd shopped around for a GT430 without a fan though :/ I made a school boy error there.