Dropping by briefly for an update on HDMI to USB things. First, properly fixed MS2109 audio was merged to the kernel earlier, both fixing the regression I introduced with the prior patch, and putting the channels in the right order (turns out the problem was more subtle).
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Also I dropped in the quirk to make audio work on the Pioneer DDJ-RB DJ controller (that story from a year ago...) while I was submitting patches to the ALSA maintainers.
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And now, this thing, which I bought a while ago but hadn't looked at yet: TL;DR it's crap. Fake USB3.0 (connector & cable, but not internals). MJPEG only. And it *craps out* if the frame is too complex (gives up, refuses to stream), probably fixed qp MJPEG exceeding bandwidth?pic.twitter.com/JjfJKuUykh
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It does seem to stream 1080p unblurred unlike the MS2109, when it works (plenty of MJPEG artifacts though), but you're much better off getting a real USB3.0 unit. Internal topology is HDMI splitter -> Sil9293 -> FIC7618 (blacktopped as TC1860, but I was able to scrape it off)
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If you want full 1080p30 / okay-ish (somewhat blurry) 1080p60 uncompressed quality, this: https://www.aliexpress.com/item/4001044872081.html … If you're on a $10 budget then for 720p compressed, one of the MS2109 ones (e.g. this: https://www.aliexpress.com/item/4000917130635.html … USB3.0 model is probably fake, USB2.0 one is MS2109).
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