September 29th, 2. The bttv driver prints a line to the kernel log, telling which card type is used. This prevents a bus transaction from starting the same cycle as GNT is de-asserted. As a result, a processor closer to 1GHz is needed to capture using one of these cards, especially for Live TV viewing since that involves both encoding and decoding at the same time. The only way to capture any kernel messages is to hook up a serial console and let some terminal application log the messages. You need this for dbx stereo. IRQ sharing is known to cause problems in some cases.

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Howto setup a bt TV Card

As mentioned above, there is a array which holds the required information for each known board. It might be mentioned there.

BT capture only – CPH03x: Make sure you post the findings of your investigations here and on the Linux-Media Mailing List so that bttv-cards. Model got re-used, some model no.

Looks like some driver hacking is required. A blue screen is what you get if the grabber kinux has no input signal. This is what I’ve done Debian Sarge testing, kernel version 2.


You should verify this is correct. So you want to make your own digital video recorder DVR under Linux, or maybe you just want to watch TV on your computer. Starting with release 0. Default is on linkx supported by the chip.

These cards have a number printed on the PCB just above the tuner metal box: The tuner frequency setting should work but it is possible that the audio multiplexer is wrong.

However, the audio will have highest bus access priority.

Linux Multimedia Hacks by Kyle Rankin

Check that the bttv module is correctly auto detecting your card and tuner type. These cards are software driven components in that they rely on the computer processor to handle much of the load, unlike the Hauppauge PVR series of hardware encoders. I have no idea where exactly, it works stable for me and a lot of other people.

To handle the grabber boards correctly, there is a array tvcards[] in bttv-cards. Secam channel is shifted sound from channel appears on nex channel on my bttv card with tda Some mainboard have problems to deal correctly with multiple devices doing DMA at the same time.

They have also stuck ljnux infra-red remote control decoded on the board, I will add support for this when I get time it simple generates an interrupt for each key press, with the key code is placed in the GPIO port.


Brooktree Corporation Bt Video Capture rev 02 This page was last modified on 28 Octoberat Join Date Oct Beans 8. Howto setup a bt TV Card. The SIx Driver Bftv msp34xx versions support this.

The arbiter bthv may then continue asynchronously until GNT is again asserted. BT Hauppauge old [autodetected]. Join Date Sep Beans 4. Check if v4l-conf is installed suid root, it needs root priviliges to do this.

CONFIG_VIDEO_BT848: BT848 Video For Linux

This card is basically the same as all the rest BtA, Philips tunerthe httv difference is that they have attached a programmable attenuator to 3 GPIO lines in order to give some volume control. And there are also different chips which decode the audio signal. Below is a do-it-yourself description for you.

Last modified: March 11, 2020