[mythtv-users] Where does MythTV handle Closed Captioning when using a PVR-350?

[Daniel Segel]

Closed Captioning is not working properly for me with MythTV and a 
PVR-350, and I'm trying to figure out whether the problem lies with the 
MythTV code or in the ivtv (and associated) drivers.

The problem is that CC is turned off when MythTV jumps (as in a 
commercial break) and is not turned back on after the jump. In my system 
logs, it looks like this:

Aug  4 17:04:45 [kernel] ivtv: Allocate DMA decoder MPEG stream: 16 x 
65536 buffers (1024KB total)
Aug  4 17:04:45 [kernel] ivtv: Allocate DMA decoder VBI stream: 512 x 
2048 buffers (1024KB total)
Aug  4 17:04:45 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
Aug  4 17:04:46 [kernel] saa7127: Turn CC output on
                - Last output repeated twice -
Aug  4 17:14:41 [kernel] saa7127: Turn CC output off
Aug  4 17:14:41 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
Aug  4 17:17:31 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
Aug  4 17:27:23 [kernel] ivtv: Allocate DMA decoder MPEG stream: 16 x 
65536 buffers (1024KB total)
Aug  4 17:27:23 [kernel] ivtv: Allocate DMA decoder VBI stream: 512 x 
2048 buffers (1024KB total)
Aug  4 17:27:23 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
...etc.

I started watching at 17:04:45, and CC was working. At 17:14:41 there 
was a commercial break. CC was turned off and MythTV skipped over the 
commercials and continued playing, but CC was never turned back on, and 
from this point on they don't ever turn back on.The same thing happens 
if I manually skip forward or backwards. CC turns off, but never turns 
back on.

I tried looking through the saa7127 and MythTV code, but I'm not a c++ 
programmer and can't really follow how it all works. I would ask on the 
mythtv-dev list but I'm having trouble subscribing to it.

Thanks for any insight or help....

Daniel Segel