To whom it may concern I am a first time poster to linux-media. I have read about mailing to this list in the wiki of linuxtv.org. Please excuse me if this post is inappropriate. This is about the USB device that I recently bought new: - Model: TerraTec Grabster AV 350 MX - Vendor Id/Product Id: 0ccd:0084 Tests made: - Composite: working (using the composite connector on the device) - S-Video: not working (using the S-Video connector on the device) - Audio: working (using the two audio connectors on the device) I am using Linux 5.4.0-31-generic #35-Ubuntu SMP. The program qv4l2 (Qt V4L2 Test Bench) can capture a composite source with Input=Composite (under "Input Settings" in tab "General Settings"), but it can not capture a source with Input=S-Video. I made sure that both the composite and S-Video sources and the device are working using a different operating system and different software. I opened the device and found the following major components on the PCB (labeled "AV350 V04"): - eMPIA EM2860 (USB Video Capture Device) - 24C02 (256 X 8 BIT EEPROM) - TI TVP5150 (Ultralow-Power NTSC/PAL Video Decoder) - eMPIA EMP202 (Single-Chip Dual-Channel AC’97 Audio Codec) - 2 times HC4052 (Dual 4-Channel Analog Multiplexer) - SKC 14.318 - SKC 12.000 Below you can find output from dmesg. I don't know the cause of the above descibed behaviour. Is S-Video functionality not yet implemented or tested? Do I do something wrong? The device has quality chips in comparison to cheaper solutions. So it makes sense to support such a device. I would like to help, specially with testing. Please advice. Thank you. Regards, Thomas --- output from dmesg: [150869.973867] usb 1-2: new high-speed USB device number 15 using xhci_hcd [150869.994295] usb 1-2: config 1 interface 0 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0 [150869.994298] usb 1-2: config 1 interface 0 altsetting 1 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994301] usb 1-2: config 1 interface 0 altsetting 2 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994303] usb 1-2: config 1 interface 0 altsetting 3 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994305] usb 1-2: config 1 interface 0 altsetting 4 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994307] usb 1-2: config 1 interface 0 altsetting 5 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994309] usb 1-2: config 1 interface 0 altsetting 6 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.994311] usb 1-2: config 1 interface 0 altsetting 7 endpoint 0x84 has invalid wMaxPacketSize 0 [150869.997314] usb 1-2: New USB device found, idVendor=0ccd, idProduct=0084, bcdDevice= 1.00 [150869.997317] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [150869.997319] usb 1-2: Product: Grabster AV 350 [150869.999059] em28xx 1-2:1.0: New device Grabster AV 350 @ 480 Mbps (0ccd:0084, interface 0, class 0) [150869.999061] em28xx 1-2:1.0: Video interface 0 found: isoc [150870.058119] em28xx 1-2:1.0: chip ID is em2860 [150870.267223] em28xx 1-2:1.0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0x618085a2 [150870.267227] em28xx 1-2:1.0: EEPROM info: [150870.267230] em28xx 1-2:1.0: AC97 audio (5 sample rates) [150870.267232] em28xx 1-2:1.0: 500mA max power [150870.267236] em28xx 1-2:1.0: Table at offset 0x04, strings=0x226a, 0x0000, 0x0000 [150870.358004] em28xx 1-2:1.0: Identified as Terratec AV350 (card=68) [150870.358010] em28xx 1-2:1.0: analog set to isoc mode. [150870.358077] em28xx 1-2:1.0: Registering V4L2 extension [150870.358486] em28xx 1-2:1.1: audio device (0ccd:0084): interface 1, class 1 [150870.430298] tvp5150 7-005c: tvp5150 (4.0) chip found @ 0xb8 (1-2:1.0) [150870.430300] tvp5150 7-005c: tvp5150am1 detected. [150873.238176] em28xx 1-2:1.0: Config register raw data: 0x50 [150873.273859] em28xx 1-2:1.0: AC97 vendor ID = 0xffffffff [150873.289840] em28xx 1-2:1.0: AC97 features = 0x6a90 [150873.289844] em28xx 1-2:1.0: Empia 202 AC97 audio processor detected
