[mythtv] Adding support for custom capture card

Joseph A. Caputo jcaputo1 at comcast.net
Wed Oct 12 19:25:35 UTC 2005


On Wednesday 12 October 2005 15:11, Luc Gallant wrote:
> >Why don't you write a V4L driver for this device?  Then any V4L 
> >compliant software like MythTV would work with it without 
> >modification? 
> 
> >I think this may have some resources in that direction: 
> >http://www.thedirks.org/v4l2/
> 
> This is an idea I originally thought of. There are a few issues I had 
> thought 
> about too, that hopefully people can help me with:
> 
> 1. My main goal is to use mythtv for pvr purposes. In the data coming 
> over the 
> network, there will be sets of data, and within those sets, 
> subchannels. So, 
> from my understanding, the driver I would write would map those sets 
> and 
> subchannels to regular channels as we know them . For example, if 
> there are 4 
> sets with 5 subchannels in each, that would make 20 channels. The user 
> could 
> then go from channel 1-20 or 300-320, whatever. The EPG then would 
> have to map 
> to those channels too, which would be accomplished by the driver 
> (because the 
> epg would be sent in that same pipe with the network video)
> 
> 2. I haven't read the entire V4L spec, but the video coming over the 
> network is 
> encoded in MPEG4. Can the V4L device output MPEG4 video? I will read 
> more of the 
> spec, but if anyone has any clue, just let me know and that would be 
> great. 

Sounds like what you have behaves more like a virtual DVB device than a 
V4L device.  Have you looked into making a DVB driver for it?

-JAC


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