Honestech Vidbox NW03

A USB video and audio capture device with no tuner. It only has Composite and S-Video inputs.

Currently unsupported by Linux without patching the V4L tree. Once patched it works well with Composite input, but S-Video hasn't been tested.

Overview/Features

• Three phono (RCA jack) inputs for Composite, which use the standard Red/White/Yellow colour scheme.

• Four pin mini-DIN socket for S-Video input.

• Based on the Empia EM2860 chip, therefore uses V4L's em28xx driver.

• USB Id eb1a:5006

Components Used

Verified by opening the box:

• Empia EM2860 USB Video Capture Device.

• Empia EMP202 Dual-Channel AC'97 Codec.

• Philips SAA7113H Video Input Processor.

• BL24C02 Serial EEPROM.

Current Status

• Needs patching to work.

• After patching, works with the Composite video and audio inputs.

• S-Video input untested.

To Make It Work

There are three issues with V4L and this device:

1. The EMP202 is identified as a SIGMATEL chip by the driver.
2. The USB Id is not recognised by the driver.
3. Once recognised, the inputs are not configured correctly.

Patching V4L

This first patch addresses the 1st issue - incorrectly identified audio chip:

diff --git a/linux/drivers/media/video/em28xx/em28xx-core.c b/linux/drivers/media/video/em28xx/em28xx-core.c
index 804a4ab..2982a06 100644
--- a/linux/drivers/media/video/em28xx/em28xx-core.c
+++ b/linux/drivers/media/video/em28xx/em28xx-core.c
@@ -568,7 +568,7 @@ int em28xx_audio_setup(struct em28xx *dev)
 	em28xx_warn("AC97 features = 0x%04x\n", feat);
 
 	/* Try to identify what audio processor we have */
-	if ((vid == 0xffffffff) && (feat == 0x6a90))
+	if (((vid == 0xffffffff) || (vid == 0x83847650)) && (feat == 0x6a90))
 		dev->audio_mode.ac97 = EM28XX_AC97_EM202;
 	else if ((vid >> 8) == 0x838476)
 		dev->audio_mode.ac97 = EM28XX_AC97_SIGMATEL;