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Audio chip is not recognized properly by the snd_usb_audio driver.It is expressed in a constant background noise. There is an unresolved problem with the sound capture.Easycap devices which have the gm7113 video decoder chip (saa7113 clone) inside don't work on stk1160 in kernel under 3.11, but do work on the legacy easycap driver.Other settings than 720x576 PAL or 720x480 NTSC may cause proplems with those programs. This is important for some programs where setting width and height of the video stream (e.g. Unlike the legacy easycapdriver the stk1160 driver doesn't support framescaling. (You only need to change the number of the sound device in the capturing program if you want to watch/ record video with sound.) In this case you maybe can get some crappy sound through the Controlle soundcard created by the snd_usb_audio module, but if you want to capture hight quality sound you need to plug in the audio source to the Line in plug of your built-in soundcard. stk1160 2-2:1.0: V4L2 device registered as video1 stk1160: registers to NTSC like standard AC'97 0 access is not valid, removing mixer. stk1160: driver ver 0.9.5 successfully loaded usb 2-2: New device Syntek Semiconductor USB 2.0 VideoĬapture Controller 480 Mbps (05e1:0408, interface 0, class 0) usb 2-2: new high-speed USB device number 8 using ehci-pci If you have the 4 CVBS model or the CVBS + S-Video model without AC'97 chip the dmesg messages look like this: Adding support for the 8 bit ADC in the stk1160 chip is planned in the future. The stk1160 module only supports audio capturing from the CVBS + S-Video Easycap with builtin AC'97 chip (3 chip stk1160 Easycap 48000Hz model). Note! In the viewing- or capturing program you must then select the Controlle soundcard or its number to hear sound! # amixer -c stk1160mixer sset Line unmute cap You can do this in the terminal as well with this command: To enable sound capture you have to select in alsamixer the Line item on the capture menu for stk1160-mixer when the STK1160 device is plugged in: On a fresh installed system, or if you have installed the driver by yourself, you once (!) need to enable sound capture from stk1160-mixer in the mixer settings. The real sound capture is done through the Controlle soundcard which is created after plugging in the STK1160 device by the snd_usb_audio module.
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The stk1160 module registers a control-only alsa soundcard.
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It is the successor of the legacy easycap driver (see below). The stk1160 driver is in the mainline kernel since version 3.7. STK1160 based devices ar supported under Linux since kernel 2.6.38 8000 = Model without AC'97 chip (currently not supported by the stk1160 driver).The following shell command reports the audiorate (sampling frequency) of your STK1160 based device: Lsusb -v see below Identify the audiotype of your device In models where this chip is missing (2 chip stk1160 Easycaps) audio capturing is done by the STK1160 chips built-in 8 bit ADC for mono microphone audio recording.)īus 001 Device 003: ID 05e1:0408 Syntek Semiconductor Co., Ltd STK1160 Video Capture Device AC'97 audio processor (from different manufacturers.
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Silan SC8113 or GM7113 (Philips SAA7113 compatible video decoder chips).Audioquality: Model 001 has AC'97 audio (48000 Hz samplerate), model 002 (and some models 001 where the AC'97 chip is missing) has mono microphone audio (8000 Hz samplerate).Switching the inputs while capturing can be done with v4l2-ctl.Capturing is possible from only one input at a time.Inputs: (Model 002) 4 yellow input cables (CVBS) labelled 1, 2, 3, 4 and one white unlabelled audio cable.Inputs: (Model 001) CVBS, S-VIDEO, AUDIO(L), AUDIO(R).Video capturing up to 720x576px 25fps (PAL) and 720x480px 30fps (NTSC).USB 2.0 interface (USB 1.1 will not work, it's too slow).2.1.1.2.2 Framescaling is not supported.1.3.1 Identify the audiotype of your device.