[測試] USBTV录制的ATV电视直播有画无声，何解？

本帖最後由 heiok.com 於 2018-12-28 12:09 編輯

USBTV盒子如图，产品老旧，在XP系统下正常使用播放及录制。Win8及Win10，原厂Player OK，有画有声，Potplay有画无声。Ubuntu下用tvtime同样有画无声。

但，以上所有系统，在播放时我在盒子上接3.5mm耳机孔有声音输出。driver ?

[ 1.860141] usb 3-3: new high-speed USB device number 4 using xhci_hcd
[ 1.991439] usb 3-3: New USB device found, idVendor=eb1a, idProduct=50a6
[ 1.991441] usb 3-3: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 1.991442] usb 3-3: Product: USB 2861 Device
[ 3.105116] em28xx: New device USB 2861 Device @ 480 Mbps (eb1a:50a6, interface 0, class 0)
[ 3.105120] em28xx: Video interface 0 found: isoc
[ 3.105152] em28xx: chip ID is em2860
[ 3.228986] em2860 #0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0x695cfff2
[ 3.228990] em2860 #0: EEPROM info:
[ 3.228991] em2860 #0: AC97 audio (5 sample rates)
[ 3.228992] em2860 #0: 500mA max power
[ 3.228994] em2860 #0: Table at offset 0x04, strings=0x226a, 0x0000, 0x0000
[ 3.228997] em2860 #0: Identified as Gadmei UTV330 (card=37)
[ 3.228998] em2860 #0:
[ 3.231075] em2860 #0: The support for this board weren't valid yet.
[ 3.231076] em2860 #0: Please send a report of having this working
[ 3.231078] em2860 #0: not to V4L mailing list (and/or to other addresses)
[ 3.231079] em2860 #0: analog set to isoc mode.
[ 3.231379] em28xx audio device (eb1a:50a6): interface 1, class 1
[ 3.231389] em28xx audio device (eb1a:50a6): interface 2, class 1
[ 3.231409] usbcore: registered new interface driver em28xx
[ 3.243831] em2860 #0: Registering V4L2 extension
[ 3.640306] saa7115 20-0025: saa7113 found @ 0x4a (em2860 #0)
[ 4.443987] em2860 #0: Config register raw data: 0x50
[ 4.467938] em2860 #0: AC97 vendor ID = 0xffffffff
[ 4.479965] em2860 #0: AC97 features = 0x6a90
[ 4.479979] em2860 #0: Empia 202 AC97 audio processor detected
[ 6.899692] em2860 #0: V4L2 video device registered as video1
[ 6.899694] em2860 #0: V4L2 VBI device registered as vbi0
[ 6.899698] em2860 #0: V4L2 extension successfully initialized
[ 6.899699] em28xx: Registered (Em28xx v4l2 Extension) extension

录制的视像已上传至以下链接：

https://drive.google.com/drive/f ... AT_og_SNtWJ-vC8RPjX