[MPlayer-users] DV1394 stream

[Nate Solberg]

On Aug 24, 2004, at 12:33 PM, Nico Sabbi wrote:

> Nate Solberg wrote:
>
>> Hello all.
>>
>> I've gotten a Motorola DCT-6200 digital cable HDTV box with a 
>> firewire output. I've been told that this is a pure MPEG-2 stream and 
>> should be able to be displayed/encoded by any MPEG-2 decoder. I've 
>> setup the DV1394 kernel module and everything seems kosher, but I 
>> need something to play back the stream. I was wondering if MPlayer 
>> can do that, and if so how. I've seen that there is some trouble with 
>> digital camcorders, but this should be a little simpler since there's 
>> no controls, just a pure MPEG-2 stream.
>>
>
> what device is exposed by dv1394?
> can it be simply cat or does it need ioctl()s?
> in the former case, assuming the output is simply MPEG-TS,
> mplayer - < /dev/1394device_name should go, in the latter case
>
> you need for a stream driver.
>
> I'm curious, where can I find docs regarding MPEG-TS over 1394 and 
> about dv1394 in linux?

I tried to CAT the /dev/dv1394 device, and nothing showed up at all. 
I'm still looking into it, but it seems that the box does need to be 
configured like a DVHS recorder or something of the sort. I'm guessing 
the cable box needs a init string to begin transmitting. In Windows 
(yeah yeah I know) the device can be recognized as a Panasonic DVHS 
recorder. I had been using a stock Fedora Core 1 install, but got the 
idea that DV1394 was a little more mature in the 2.6 tree, so I'm 
trying to get 2.6.8 working right with the crap that Redhat ships.

To be totally honest, I need to put a little more time into this 
project. I've been out of the hacking job for a while now and I'm 
pretty rusty. I was kinda hoping it would be like the Mac and just plug 
and work.

>
>> By the way, I've been researching this for about a month or two now, 
>> and I think that HDTV from your cable box with only a firewire cable 
>> is something that should be announced loudly. The FCC has required 
>> that connection for just this reason, being able to watch HD without 
>> a $1000 TV.
>>
>> Thanks in advance.
>>
>> -Nate Solberg
>>
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>
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