[MPlayer-users] Capturing from composite using a bktr card on OpenBSD

[Edd Barrett]

Hi,

On 9 January 2012 20:18, Reimar Döffinger <Reimar.Doeffinger at gmx.de> wrote:
> On Mon, Jan 09, 2012 at 03:58:23PM +0000, Edd Barrett wrote:
>> Hi,
>>
>> I am using mplayer in combination with a bktr card to play my old sega
>> megadrive. It works, but something is not quite right:
>>  - odd "scanlines" across picture.
>>  - colours are really intense and psychedelic.
>>
>> I am no expert in video, colour spaces, timings etc, so I can't
>> provide any decent insight as to why this happens, but I can provide a
>> couple of screenshots:
>>
>> http://imgur.com/a/7YqqP
>>
>> The first screenshot is supposed to have a blue background IIRC.
>
> How does that blue with the wrong colour compare to the blue that has
> the correct colour in the capture?

A false green which should be blue is a blocky flickery green.

> How do you connect the capture card?

I am using a sega megadrive composite cable; this exact one:
http://www.amazon.co.uk/Sega-Megadrive-II-cable-lead/dp/B00206LKR4/ref=sr_1_1?ie=UTF8&qid=1326140774&sr=8-1

I plug this into the composite (input 0) of my bktr card, which is a:
bktr0 at pci3 dev 2 function 0 "Brooktree BT878" rev 0x02: apic 8 int 18
bktr0: Card has no configuration EEPROM. Cannot determine card make.
bktr0: IMS TV Turbo, Philips FR1236 NTSC FM tuner.

Here it has guessed(?) that the card is NTSC, I think this is the
problem. The bktr(4) manual page has a kernel option "option
BKTR_OVERRIDE_CARD=nnn" which I can force to PAL perhaps?

I will try this.

-- 
Best Regards
Edd Barrett

http://www.theunixzoo.co.uk