[Cin] offtopic: Digitize and record Video with A/D USB adapters

Terje J. Hanssen terjejhanssen at gmail.com
Thu Sep 30 00:47:09 CEST 2021

Many good points, and I shorten the repeated thread above 


> FLAC is audio codec, but from what I saw ppl used it with huffyuv for
> example on Windows, so main output from drivr should be uncompressed

Of course, my confusion, FLAC is "Free Lossless Audio Codec", which I 
never have used so far (remembered Andrea mentioned it).

Could i.e free, lossless FFV1 (or x265 lossless) be useful "LTS and 
crossplatform compatible codecs" to compress 4:2:2 SD and HD video 
output for archiving and editing?
So far I have used proprietary ProRes HQ via BM Hyperdeck Shuttle 2, but 
an open format is a wishible option.
(Playback S-Video via TBC and converted to DV PAL (4:2:0) has visible 
less colors, which also may be due to Datavideo bult-in the A/D 
converter in the recorder..)

1) AVerMedia CE310B
This PCIe videograbber is possibly"End Of Life - This product is no 
longer available to purchase"

2) AVerMedia CL311-M2
This looks to be a newer, more professional and > US $300 costly PCIe 
video capture card that supports both analog video, full HD(MI) video 
and more.
Beyond Windows support, there is a Linux Driver (2.0.8) for Ubuntu 
20.04/18.04/16.04, kernel 5.4.0-4.15.0, TegraOS kernel 4.4.0, Support 
users to complie driver by themselves.
While the first CL311-M1 included a S-Video connector on its backplane, 
the M2 version apply a cable dongle and supports 8 bit colors, 4:2:2 
uncompressed format..
(That is, not unlike BM's (previous) Intensity Pro video grabber card)


@Mat and @Stefan

> - I would avoid plug-in cards, you are completely dependent on the
>    manufacturer's support for Linux drivers. On the other hand, USB
>    grabbers usually follow standard USB audio/video rules, and almost
>    always work.
> Your argument is valid for drivers in Linux. The problem with the USB
> drivers and Linux;
>   - Linux supports a single endpoint per device, when the device needs two
>     independent drivers this causes a problem. For example V4L + libusb with
>     an ATEM.

3) AVerMedia CU511B
This full HD and SD Capture Box, 8 bit 4:2:2 with USB 3.0, could 
possibly be an interesting external counterpart to the CE311-M2 PCIe 
capture card mentioned above.
However I would expect it costs at least as much; possibly therefore my 
search didn't find it for sail.
According to the latest datasheet (DS_CU511B_EN_21060630.pdf, 1.5 MB), 
Windows and Linux driver support is included (and possibly required?) as
•Linux Services
•Support Linux kernel 2.6.14 version and later based on V4L2 & ALSA 
•Driver customization service by request



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