[mythtv-users] Frontend "Couldn't find Xv support" problem with PVR 350 TV out

[Jason G.]

Hi David,

> Are you sure your recordings are mpeg2?  If so, please add some
> debugging in IvtvDecoder::CanHandle to see why Myth is not trying to
> use the 350 output.

After some quick printfs, it looks like the problem is that some of the
streams were recorded as mpeg2-ts rather than the -ps flavor.  The format
info returned by av_probe_input_format() has a fmt->name of "mpegts" for the
streams that don't work.  I tried changing the string compare to
strncmp(fmt->name, "mpeg", 4) but that didn't yield anything useable
on-screen.

This is the info for a file that fails:

Input #0, mpegts, from '/mnt/store//1012_20040120220000_20040120223000.nuv':
  Stream #0.0[0x12d]: Audio: mp2, 48000 Hz, stereo, 384 kb/s
  Stream #0.1[0x12c]: Video: mpeg2video, 720x480, 29.97 fps

This is the info for a file that succeeds:
Input #0, mpeg, from '/mnt/store//1049_20040120080500_20040120113000.nuv':
  Stream #0.0: Video: mpeg2video, 720x480, 29.97 fps
  Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s

Is this an issue that the PVR 350 can record something it can't play, or is
myth doing some kind of processing on the incoming signal to make it
mpeg2-ts?

Jason