dheitmueller at kernellabs
Jan 18, 2010, 10:42 AM
On Mon, Jan 18, 2010 at 1:35 PM, Hans Verkuil <hverkuil [at] xs4all> wrote:
> - NTSC and WSS. I still do not know how NTSC determines whether the source is
> 4x3 or 16x9. PAL uses the WideScreen Signal (WSS). A similar feature exists
> for NTSC, but it is unclear whether it is actually used by broadcasters.
> Nobody seems to know.
The reality is that for NTSC there is no standard. There is an NTSC
variant of WSS discussed in the WSS specification, as well as a way of
representing the info in EIA-608. As far as I have been able to
gather though, neither have actually ever been used in production. If
someone wants to offer some evidence to the contrary, I would be happy
to add the support to tvtime and test it with some of my tuner boards
(and fix any bugs that in the driver I find).
> - Replace the PCM device node with a proper ALSA device.
For what it's worth, this has actually been done for the cx18 (but not
for ivtv). I just need to do the final PULL request to get it into
the mainline v4l-dvb.
Devin J. Heitmueller - Kernel Labs
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