Hi,

I recently bought a Terratec Grabby. The device has a S-Video and 3 Cinch
cables (sound left, sound right, video). I want to record some video
cassettes with it. (with a cinch-scart adapter).

I checked the signal, there is audio and video on it.

When I try to "play" the capture device with e.g. mplayer, I see "no
sound", even with various options.

I can hear sound only by doing "arecord -D hw:2,0 -r 32000 -c 2 -f S16_LE |
aplay -", but as soon as mplayer is starting, I can't hear anything
anymore.

...which means that using alsa as the sound device with mplayer doesn't
work either.

Am I missing something?

I checked the source code, Terratec Grabby support was introduced with
4557af9c5338605c85fe54f5ebba3d4b14a60ab8:

-----------------------------------------
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 7cb93fb..b4c78f2 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -1347,6 +1347,22 @@ struct em28xx_board em28xx_boards[] = {
                        .amux     = EM28XX_AMUX_VIDEO,
                } },
        },
+       [EM2860_BOARD_TERRATEC_GRABBY] = {
+               .name            = "Terratec Grabby",
+               .vchannels       = 2,
+               .tuner_type      = TUNER_ABSENT,
+               .decoder         = EM28XX_SAA711X,
+               .xclk            = EM28XX_XCLK_FREQUENCY_12MHZ,
+               .input           = { {
+                       .type     = EM28XX_VMUX_COMPOSITE1,
+                       .vmux     = SAA7115_COMPOSITE0,
+                       .amux     = EM28XX_AMUX_VIDEO2,
+               }, {
+                       .type     = EM28XX_VMUX_SVIDEO,
+                       .vmux     = SAA7115_SVIDEO3,
+                       .amux     = EM28XX_AMUX_VIDEO2,
+               } },
+       },
 };
 const unsigned int em28xx_bcount = ARRAY_SIZE(em28xx_boards);

@@ -1410,6 +1426,8 @@ struct usb_device_id em28xx_id_table[] = {
                        .driver_info = EM2870_BOARD_TERRATEC_XS },
        { USB_DEVICE(0x0ccd, 0x0047),
                        .driver_info = EM2880_BOARD_TERRATEC_PRODIGY_XS },
+       { USB_DEVICE(0x0ccd, 0x0096),
+                       .driver_info = EM2860_BOARD_TERRATEC_GRABBY },
        { USB_DEVICE(0x185b, 0x2870),
                        .driver_info = EM2870_BOARD_COMPRO_VIDEOMATE },
        { USB_DEVICE(0x185b, 0x2041),
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index e801f78..fa2fb41 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -103,6 +103,7 @@
 #define EM2860_BOARD_EASYCAP                      64
 #define EM2820_BOARD_IODATA_GVMVP_SZ             65
 #define EM2880_BOARD_EMPIRE_DUAL_TV              66
+#define EM2860_BOARD_TERRATEC_GRABBY             67

 /* Limits minimum and default number of buffers */
 #define EM28XX_MIN_BUF 4
-----------------------------------------

Is there maybe a wrong amux set? Which one could it be?
Is sound-usb-audio somehow conflicting with em28xx module?

I hope you have an idea what is wrong here!

Florian Klink

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