When I enable ATSC captions, it looks like only about half of
the text shows up. And what does show up is often partially
off-screen.

The timing also seems to be pretty wacked: sometimes a line of
text is only displayed for a fraction of a second before being
overwritten, and sometimes text seems to be rendered several
seconds before or after it should have been.

VBI captioning seems to work far better, but I assume it's
going away at some point.

Do ATSC captions work for anybody else?

_________________
Grant

I have had similar results. I wonder if it has been improved in 0.21.

R5.5 has MythTV 0.21. Please give it a try.

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After upgrading to R5.5, which was fairly bumpy, there was no improvement in ATSC CC. It's still off the left and/or bottom edge of the screen and has no background for the text.

I'm curious as to whether the new screen setup wizard will help. I'm wary of messing up my settings because it took a lot of trial and error to get it right. Perhaps if the NVIDIA video card didn't have such a hellish overscan problem the CC text would actually be on the screen. It should still be visible, though, as I have configured the frontend to use only the visible area with very little overscan.

After reading about all the problems people are having getting
HD playback to work in 5.5, I'm pretty wary about upgrading.

Since that's the one feature I was hoping to get working by
upgrading, I'm definitely not going to try it. :/

I doubt it. It sounds like nothing has changed with respect to
ATSC captions. My setup has no overscan, and ATSC captions are
still useless: they're either off screen, overwriting
themselves, or the timing is so off that you only get to see
about half of them.

Your description sounds exactly like what I see with an R5F27
setup that has no overscan, so it sounds like no progress has
been made on ATSC captions.

_________________
Grant

One thing that I lost (at least until I can figure out a better combination) is color OSD when playing HD content. I know it's because I'm using XvMC now, but HD doesn't play as well without it. I would say that HD playback is slightly degraded versus R5F27, but I have only used it for two days.

I'm glad my experience could help save you some effort. If I figure anything out, I'll let you know.

Several others have reported even worse problems with HD
playback: they had HD playback that worked fine before
upgrading and now have CPU usage pegged at 100% when they try
to playback HD recordings. From the descriptions, it sounds
like something in the MythTV frontend player is broken.

_________________
Grant