On Sat, Nov 1, 2008 at 6:36 PM, Andy Walls <[EMAIL PROTECTED]> wrote:
> On Sat, 2008-11-01 at 18:36 -0400, Jeff Campbell wrote: > > Welcome back Andy. > > > > On Sat, Nov 1, 2008 at 8:54 AM, Andy Walls <[EMAIL PROTECTED]> wrote: > > On Fri, 2008-10-31 at 15:46 -0400, Jeff Campbell wrote: > > > Let me give an update here. By setting the stream_type=1, you can get > > native TS from the card/driver. This is something Hans added support > > for a few months ago. > > Ah, thanks for the details. I knew he had, but I never tested. > > It appears to be much less watchable than the PS though. I'm going to stick to working with the PS for now and circle back with the TS once that is resolved. > > > I have had some success adjusting buffer sizes on the client side that > > is joining the multicast, but nothing conclusive yet due to various > > other factors. > > > > I am doing more testing tonight and will report any material findings. > > So far I've had no audio and audio sync issues, but there are a lot of > > variables in my test setup so I don't want to say its the card or > > driver just yet. > > Oh, I know the driver contributes. Audio can come up to a few seconds > ahead of the video. See below... > > > > I am going to build the latest version of the driver as well as a > > 2.6.27.4 kernel later tonight to test against. > > > > Here is a patch I submitted but was rejected by the v4l-dvb maintainer: > > http://linuxtv.org/hg/~awalls/v4l-dvb/rev/a81c3fdf53e8<http://linuxtv.org/hg/%7Eawalls/v4l-dvb/rev/a81c3fdf53e8> > > It changes the buffer handling and some of the module parameter > semantics/units (which is why it was rejected) to allow a user to > specify arbitrary buffer sizes. Using individual MPEG buffer sizes > around 8k smoothed out the PS rather well. Occasional frames with very > small payload still jittered, but overall watchable without buffering. > > Do you happen to have the syntax for the buffer settings on insert or from module.options that I could copy? I'm going to try this tonight. -Jeff
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