[mythtv-users] ivtv capture is good, but mythtv hoses it

[Daniel Kristjansson]

On Wed, 2007-06-27 at 18:02 +0100, Nick Morrott wrote:
> On 27/06/07, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> Just to point out potential issues when using new stable/trunk
> releases of MythTV with older versions of ivtv and the DVD-Special 2
> stream type:
> 
> 2007-06-27 05:27:37.940 External Tuning program exited with no error
> 2007-06-27 05:27:38.042 MPEGRec(/dev/video0) Warning: Stream type
> 'DVD-Special 2'
>                         is not supported by ivtv driver, using 'DVD' instead.
> 2007-06-27 05:27:38.104 MPEGRec(/dev/video0) Warning: VBI recording
> with broken drivers.
>                         Upgrade to ivtv 0.10.0 if you experience problems.
> 2007-06-27 05:27:38.084 Started recording: The New Yankee Workshop
> "Bermuda Chest": channel 4021 on cardid 4, sourceid 2
> 
> 
> To me, at least, this error is incorrect, as the information I see
> from looking at ivtv.h from the ivtv driver source is:
> 
> [root at homer driver]# cat /usr/src/ivtv-0.6.7/driver/ivtv.h |fgrep "IVTV_STREAM_"
> #define IVTV_STREAM_PS          0
> #define IVTV_STREAM_TS          1
> #define IVTV_STREAM_MPEG1       2
> #define IVTV_STREAM_PES_AV      3
> #define IVTV_STREAM_PES_V       5
> #define IVTV_STREAM_PES_A       7
> #define IVTV_STREAM_DVD         10
> #define IVTV_STREAM_VCD         11
> #define IVTV_STREAM_SVCD        12
> #define IVTV_STREAM_DVD_S1      13
> #define IVTV_STREAM_DVD_S2      14
> #define IVTV_STREAM_INFO_V1_SIZE 8

The VBI recording warning is due to lockups that can occur on
some hardware using the older drivers; if you've been using
the old drivers without problems you can continue to do so.
The stream type warning is grounded in a firmware issue. Newer
firmware does not support some of the stream types that older
firmware supported, such as MPEG-TS. There is no way for MythTV
to query from ivtv which ones will actually work with the
particular firmware that is loaded. Plus the newer drivers only
support a subset of these stream types anyway. We restrict
ourselves to the ones that work with both the newest drivers
and the newest firmware images as well as old drivers and
old firmware.

-- Daniel