Hi. I've an ezcap295hd. It's an usb video grabber based on the IT9910 chipset manufactured by ITE Tech. Inc. I wasn't able to find linux support for it. Is anybody working on it? The chipset and device vendors were not helpful providing usb specs. But I attempted to reverse the usb communication on windows and it doesn't seem too complex. It has 3 endpoints, I inferred that it works as follows: ENDPOINT 1 Bulk OUT: Control Output ENDPOINT 2 Bulk IN: Control Input ENDPOINT 3 Bulk OUT: MPEG-TS Stream So far I was able to extract and play the video stream from a pcapng. I've some experience writing USB user space applications, but no experience writing kernel modules nor with the video4linux api. If nobody is working on this chipset I'd like to attempt to write a driver for it. Also, does anybody know of a module for a device similar to this one that I could base my driver on? It would be of great help. I'll leave lsusb output and attach a pcapng in case anybody wants to check it out. Regards. Juan Zuloaga /**********************************/ pcapng: https://drive.google.com/file/d/1SCSLbJPqrUZKC7QXBO_En-p6JBcy_nTG/view?usp=sharing /*********************************/ Bus 003 Device 026: ID 048d:9910 Integrated Technology Express, Inc. IT9910 chipset based grabber Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x048d Integrated Technology Express, Inc. idProduct 0x9910 IT9910 chipset based grabber bcdDevice 1.00 iManufacturer 1 ITE TECH. INC. iProduct 2 ezcap HD Capture iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0027 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered)
