On 15/02/2025 17:18, Randy Kimmett wrote: > Avermedia DVD EZMaker 7 > Model: C039 > VID:07CA PID:C039 > Module used: cx231xx > Distro: Manjaro > Kernel version: 6.13.0-1 > Components used: Conexant CX23012-11Z (according to https://www.linuxtv.org/wiki/index.php/AVerMedia_DVD_EZMaker_7_(C039)) > > When capturing analog video from my old Hi8 video camera (NTSC M), the captured video has banding and is grainy, it doesn't matter if I capture from the S-Video or Composite, the results are the same. On my windows PC the capture is perfect. > > dmesg output: > > [31173.105709] cx231xx 3-1:1.1: New device AVerMedia TECHNOLOGIES, Inc. AVerMedia C039 USB Pure Capture @ 480 Mbps (07ca:c039) with 7 interfaces > [31173.106062] cx231xx 3-1:1.1: can't change interface 4 alt no. to 3: Max. Pkt size = 0 > [31173.106065] cx231xx 3-1:1.1: Identified as Conexant VIDEO GRABBER (card=5) > [31173.106649] i2c i2c-13: Added multiplexed i2c bus 15 > [31173.106704] i2c i2c-13: Added multiplexed i2c bus 16 > [31173.214440] cx25840 12-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0-0) > [31175.444434] cx25840 12-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes) > [31175.493936] cx231xx 3-1:1.1: v4l2 driver version 0.0.3 > [31175.620281] cx231xx 3-1:1.1: Registered video device video2 [v4l2] > [31175.620318] cx231xx 3-1:1.1: Registered VBI device vbi0 > [31175.620423] cx231xx 3-1:1.1: audio EndPoint Addr 0x83, Alternate settings: 3 > [31175.620426] cx231xx 3-1:1.1: video EndPoint Addr 0x84, Alternate settings: 5 > [31175.620429] cx231xx 3-1:1.1: VBI EndPoint Addr 0x85, Alternate settings: 2 > [31175.620431] cx231xx 3-1:1.1: sliced CC EndPoint Addr 0x86, Alternate settings: 2 > [31175.620433] cx231xx 3-1:1.1: TS EndPoint Addr 0x81, Alternate settings: 6 > > https://bugzilla.kernel.org/show_bug.cgi?id=219764 (also contains a sample video clip of the issue) > https://www.linuxtv.org/wiki/index.php/AVerMedia_DVD_EZMaker_7_(C039) > > > Any help and/or suggestions would be greatly appreciated. :) I'll try this with my own cx231xx device, mostly to check if it is a regression of some kind. I don't have this specific device, so if it works for me, then there isn't a lot that can be done. Support for it was originally added through this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1620762 It says: I built the cx231xx driver with the patch and made a few tests. Tested and working: - Video capture on the composite input - NTSC source - PAL source Not tested: - Audio capture - S-Video input - SECAM source I hope to find some time to test this in 1-2 weeks. Regards, Hans
