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<div class="moz-cite-prefix">Den 08.02.2023 21:05, skrev Andrew
Randrianasulu:<br>
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cite="mid:CA+rFky7yW-9s4-6HO0kDrrVefAgWBRU6RYTOHjcg8W2ori7oxw@mail.gmail.com">
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<div dir="auto"><a
href="https://www.cnx-software.com/2022/11/07/ms2130-based-4k-hdmi-to-usb-3-0-video-capture-dongle-sells-for-19/"
target="_blank" rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.cnx-software.com/2022/11/07/ms2130-based-4k-hdmi-to-usb-3-0-video-capture-dongle-sells-for-19/</a>
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<div dir="auto">"I learned about the video capture dongle via <a
href="https://twitter.com/MateuszStarzak/status/1589595781971181568"
moz-do-not-send="true">Mateusz Starzak</a> who purchased a
sample <a href="https://s.click.aliexpress.com/e/_Dd6uEUB"
moz-do-not-send="true">on Aliexpress</a> and confirmed
support for uncompressed YUV @ 1080p60. He also mentioned the
latency to be around 6 to 11 frames depending on the
resolution with 720p input to 720p output only looking
slightly faster than 1080p input to 1080p output."</div>
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<br>
<br>
My tests with the return-object Hama ms2109 uncovered it failed on
FHD video due to unuseable 5 fps, while it managed 422 subsampling
and 8-bit color depth.<br>
<br>
I mentioned I have ms2130 in order, yes.<br>
<br>
Reading from the ms2130 specs:<br>
<br>
Support input resolution up to 4K@30Hz;<br>
Support output resolution up to 1080P@60Hz YUY2;<br>
Support 24/30/36bit Deep color;<br>
<br>
<br>
The different way to specify color depth/color precision/bit depth:
8-bits or 10-bits is confusing.<br>
<br>
Regarding "24/30/36bit Deep color" I found the following in
wikipedia:<br>
<br>
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Color_depth#True_color_(24-bit)">https://en.wikipedia.org/wiki/Color_depth#True_color_(24-bit)</a><br>
True color (24-bit)<br>
<br>
24 bits almost always use 8 bits each of R, G, and B (8 bpc).<br>
224 gives 16,777,216 color variations.<br>
humans can see the changes between some adjacent colors as color
banding.<br>
<br>
<br>
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Color_depth#Deep_color_(30-bit)">https://en.wikipedia.org/wiki/Color_depth#Deep_color_(30-bit)</a><br>
Deep color (30-bit)<br>
<br>
Deep color consists of a billion or more colors.[15] 230 is
1,073,741,824. Usually this is 10 bits each of red, green, and blue
(10 bpc).<br>
36-bit<br>
Using 12 bits per color channel produces 36 bits, 68,719,476,736
colors. <br>
<br>
<blockquote type="cite"
cite="mid:CA+rFky7yW-9s4-6HO0kDrrVefAgWBRU6RYTOHjcg8W2ori7oxw@mail.gmail.com">
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<div dir="auto">well, I hope Terje's camera can be switched into
hdmi progressive output mode .....<br>
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<br>
Yes, and it has already proved to do this even better than first
expected, I think.<br>
Again, according to S. Mullen's handbook for V1 and FX7 (who
mentioned BMD's capture cards in this context): <br>
<blockquote>Sony’s 3ClearVid technology is tightly integrated with
Sony’s Enhanced Imaging Processor (EIP). According to Sony, the
EIP works at<br>
1920x1080 in a 4:2:2 color space. The EIP has a 2-million-pixel
buffer for each of the three primary colors.<br>
<br>
When the camera is operating, the EIP generates uncompressed
1440x1080i with a 4:2:2 color space. Uncompressed 4:2:2, 8-bit,<br>
digital video plus dual-channel, PCM, 16-bit, 48kHz audio are
output via the HDMI port, while 4:2:2 analog is output via
component-out. <br>
Therefore, you can record 4:2:2 live HD video from the camera
without MPEG-2 compression. <br>
</blockquote>
According ot my tests FX7 created FHD 1920x080p, 8-bit 422 video..<br>
I also tested 1440x1080 video size, which was not listed among v4l2
supported format. This format was automatically encoded as
1280x1024.<br>
<br>
So I also wondered how it was possible to get encoded (SD) 720x576
and 1280x1024, though they supported by v4l2/capture card?<br>
I think the interesting explanation also has been found in Mullen's
handbook:<br>
<blockquote>If the HDMI handshake determines that the device can
accept 1080i—then 1080i is sent. If the handshake determines that
the device can only accept 480i/576i—then<br>
480i/576i is sent. <br>
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cite="mid:CA+rFky7yW-9s4-6HO0kDrrVefAgWBRU6RYTOHjcg8W2ori7oxw@mail.gmail.com">
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<div dir="auto">contain few links. Of course main problem is
verification ..... if they just paint them (usb connectors)
blue for no reason ...:/</div>
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