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    Many good points, and I shorten the repeated thread above
    ....................<br>
    <br>
    @Andrew<br>
    <br>
    First <br>
    <blockquote type="cite">
      <pre>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</pre>
    </blockquote>
    <br>
    Of course, my confusion, FLAC is "Free Lossless Audio Codec", which
    I never have used so far (remembered Andrea mentioned it).<br>
    <br>
    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?<br>
    So far I have used proprietary ProRes HQ via BM Hyperdeck Shuttle 2,
    but an open format is a wishible option. <br>
    (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..)<br>
    <br>
    <br>
    1) AVerMedia CE310B<br>
    This PCIe videograbber is possibly<span class="price" title="This
      product is no longer available to purchase"> "End Of Life -</span>
    <span itemprop="price" content="99999.99"></span> <span
      itemprop="priceCurrency" content="GBP"></span> <small>This
      product is no longer available to purchase</small>" <br>
<a class="moz-txt-link-freetext" href="https://www.scan.co.uk/products/avermedia-ce310b-pcie-frame-grabber-with-composite-s-video-interfacing?__cf_chl_captcha_tk__=pmd_750OsGngyr3HJ_Tm7NOj_k_LupqeA9reTqddMnXjA.0-1632945021-0-gqNtZGzNA1CjcnBszQfl">https://www.scan.co.uk/products/avermedia-ce310b-pcie-frame-grabber-with-composite-s-video-interfacing?__cf_chl_captcha_tk__=pmd_750OsGngyr3HJ_Tm7NOj_k_LupqeA9reTqddMnXjA.0-1632945021-0-gqNtZGzNA1CjcnBszQfl</a><br>
    <br>
    2) AVerMedia CL311-M2<br>
    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.<br>
    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.<br>
    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..<br>
    (That is, not unlike BM's (previous) Intensity Pro video grabber
    card)<br>
    <br>
    <a class="moz-txt-link-freetext"
      href="https://professional.avermedia.com/frame-grabbers/cl311-m2/">https://professional.avermedia.com/frame-grabbers/cl311-m2/</a><br>
    <a class="moz-txt-link-freetext" href="https://www.avermedia.com/professional/download/cl311_m2#ans_part">https://www.avermedia.com/professional/download/cl311_m2#ans_part</a><br>
    <a class="moz-txt-link-freetext" href="https://www.avermedia.com/professional/faqs/cl311_m2">https://www.avermedia.com/professional/faqs/cl311_m2</a><br>
    <a class="moz-txt-link-freetext" href="https://www.avermedia.com/professional/product/sdk/overview">https://www.avermedia.com/professional/product/sdk/overview</a><br>
<a class="moz-txt-link-freetext" href="https://www.amazon.com/AVerMedia-1080P-60FPS-Capture-CL311-M2/dp/B07B9YHWS9">https://www.amazon.com/AVerMedia-1080P-60FPS-Capture-CL311-M2/dp/B07B9YHWS9</a><br>
    <br>
    <br>
    @Mat and @Stefan<br>
    <br>
    <blockquote type="cite">
      <pre>- 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.</pre>
    </blockquote>
    -------------------<br>
    <blockquote type="cite">
      <pre>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.</pre>
    </blockquote>
    <br>
    <br>
    3) AVerMedia CU511B <br>
    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.<br>
    However I would expect it costs at least as much; possibly therefore
    my search didn't find it for sail. <br>
    According to the latest datasheet (DS_CU511B_EN_21060630.pdf, 1.5
    MB), Windows and Linux driver support is included (and possibly
    required?) as<br>
    •Linux Services<br>
    •Support Linux kernel 2.6.14 version and later based on V4L2 &
    ALSA framework<br>
    •Driver customization service by request<br>
    <br>
    <a class="moz-txt-link-freetext"
      href="https://www.avermedia.com/professional/news/20">https://www.avermedia.com/professional/news/20</a><br>
    <a class="moz-txt-link-freetext"
      href="https://www.avermedia.com/professional/product/cu511b/overview">https://www.avermedia.com/professional/product/cu511b/overview</a><br>
    <a class="moz-txt-link-freetext"
      href="https://www.avermedia.com/professional/product/cu511b/spec">https://www.avermedia.com/professional/product/cu511b/spec</a><br>
    <a class="moz-txt-link-freetext" href="https://www.avermedia.com/professional/faqs/cu511b">https://www.avermedia.com/professional/faqs/cu511b</a><br>
<a class="moz-txt-link-freetext" href="http://storage.avermedia.com/web_release_www/CU511B/DS_CU511B_EN_21060630.pdf">http://storage.avermedia.com/web_release_www/CU511B/DS_CU511B_EN_21060630.pdf</a><br>
    <br>
    <br>
    ---------<br>
    Terje<br>
    <br>
    <br>
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