On Mon, 2008-11-03 at 17:00 -0500, Jeff Campbell wrote: > > > 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:
> Here is a patch I submitted but was rejected by the v4l-dvb > maintainer: > > http://linuxtv.org/hg/~awalls/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. > With the patch applied and the module installed under /lib/modules/..... # modprobe -r cx18 # modinfo cx18 # modprobe cx18 enc_mpg_bufsize=8 enc_mpg_bufs=63 63 buffers of 8 kB each. Not a lot of buffer depth, but with the default buffer size (of 32 kB IIRC) you didn't get very deep buffer usage anyway. I've only observed 11 buffers x 32 kB as a maximum burst from the chip when MythTV or mplayer couldn't keep up. -Andy _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
