Many good points, and I shorten the repeated thread above .................... @Andrew First
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" https://www.scan.co.uk/products/avermedia-ce310b-pcie-frame-grabber-with-com... 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) https://professional.avermedia.com/frame-grabbers/cl311-m2/ https://www.avermedia.com/professional/download/cl311_m2#ans_part https://www.avermedia.com/professional/faqs/cl311_m2 https://www.avermedia.com/professional/product/sdk/overview https://www.amazon.com/AVerMedia-1080P-60FPS-Capture-CL311-M2/dp/B07B9YHWS9 @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 framework •Driver customization service by request https://www.avermedia.com/professional/news/20 https://www.avermedia.com/professional/product/cu511b/overview https://www.avermedia.com/professional/product/cu511b/spec https://www.avermedia.com/professional/faqs/cu511b http://storage.avermedia.com/web_release_www/CU511B/DS_CU511B_EN_21060630.pd... --------- Terje