OT: Capture 576i50 analog S-video with v4l2 and PCIe Magewell Pro Capture AIO in 10-bit 4:2:2?
It's been quite a while since my last post, but I've been keeping up a bit in the background ....... In the past, we had some posts about capture devices, some few standalone or pcie based, but most usb of course. After earlier S-video to DV capturing (which was in 8bit 4:2:0 using Datavideo DN300), my plan has been to recapture all my S-video tapes to 10bit 4:2:2 in Prores LT for the final archive. In fact I tested this 10 years ago for 5 Hi8 tapes (which still work using ffmpeg) using a Blackmagic Analog to SDI mini-converter and a Hyperdeck Shuttle-2 SSD recorder. Some months ago I tried to resume this capture project, but had to conclude that the BMD converter didn't work. I ordered a new one, 2nd gen (EOS), but unfortunately its new chips seemingly require a studio-quality video signal. The Shuttle-2 didn't get a valid signal to record, even though it works perfectly fine when recording HD video from my HDV camcorder via HDMI. So at last I had to give up on this BMD analog route. And I don't wont to trust Blackmagic Design Intensity Pro 4K on Linux -- a card I previously mentioned in an old post https://tinyurl.com/2nuj7hfk There is however another option, —costly, yes—for Linux that I was not aware of and therefore didn't mention in my old post above Magewell Pro Capture Aio - One-channel HD capture card But I have yet to find user posts confirming it is capable to record SD video in 10bit 4:2:2 with v4l2, and especially on openSUSE Tumbleweed-Slowroll. Any tip or thoughts about how risky this Magewell option may be with regards to success or failure ? Here follows just my collections of Magewell urls: https://www.magewell.com/products/pro-capture-aio https://www.magewell.com/kb/detail/000020047/pro-capture https://www.magewell.com/kb/pro-capture?page=1 https://www.magewell.com/downloads/pro-capture https://www.vision-dimension.com/en/blog/video-capture/magewell/magewell-is-...
пн, 24 авг. 2026 г., 14:25 Terje J. Hanssen via Cin < cin@lists.cinelerra-gg.org>:
It's been quite a while since my last post, but I've been keeping up a bit in the background .......
In the past, we had some posts about capture devices, some few standalone or pcie based, but most usb of course. After earlier S-video to DV capturing (which was in 8bit 4:2:0 using Datavideo DN300), my plan has been to recapture all my S-video tapes to 10bit 4:2:2 in Prores LT for the final archive. In fact I tested this 10 years ago for 5 Hi8 tapes (which still work using ffmpeg) using a Blackmagic Analog to SDI mini-converter and a Hyperdeck Shuttle-2 SSD recorder.
Some months ago I tried to resume this capture project, but had to conclude that the BMD converter didn't work. I ordered a new one, 2nd gen (EOS), but unfortunately its new chips seemingly require a studio-quality video signal. The Shuttle-2 didn't get a valid signal to record, even though it works perfectly fine when recording HD video from my HDV camcorder via HDMI.
So at last I had to give up on this BMD analog route. And I don't wont to trust Blackmagic Design Intensity Pro 4K on Linux -- a card I previously mentioned in an old post https://tinyurl.com/2nuj7hfk
There is however another option, —costly, yes—for Linux that I was not aware of and therefore didn't mention in my old post above Magewell Pro Capture Aio - One-channel HD capture card But I have yet to find user posts confirming it is capable to record SD video in 10bit 4:2:2 with v4l2, and especially on openSUSE Tumbleweed-Slowroll.
This is pcie device ... I think "recently" some kind of thunderbolt/usb4 external boxes for pcie devices appeared ... My best idea (apart from buying it from sources allowing return without penalty) is to see if external pcie enclosure can be connected to your more portable laptop, and try to go to physical place where you can assembly whole setup, including source . Some kind of linux user meetup, may be?
Any tip or thoughts about how risky this Magewell option may be with regards to success or failure ?
Here follows just my collections of Magewell urls: https://www.magewell.com/products/pro-capture-aio https://www.magewell.com/kb/detail/000020047/pro-capture https://www.magewell.com/kb/pro-capture?page=1 https://www.magewell.com/downloads/pro-capture
https://www.vision-dimension.com/en/blog/video-capture/magewell/magewell-is-... _______________________________________________ Cin mailing list -- cin@lists.cinelerra-gg.org To unsubscribe send an email to cin-leave@lists.cinelerra-gg.org
On 24.08.2026 15:43, Andrew Randrianasulu wrote:
пн, 24 авг. 2026 г., 14:25 Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org>:
It's been quite a while since my last post, but I've been keeping up a bit in the background .......
....snip
There is however another option, —costly, yes—for Linux that I was not aware of and therefore didn't mention in my old post above Magewell Pro Capture Aio - One-channel HD capture card But I have yet to find user posts confirming it is capable to record SD video in 10bit 4:2:2 with v4l2, and especially on openSUSE Tumbleweed-Slowroll.
This is pcie device ... I think "recently" some kind of thunderbolt/usb4 external boxes for pcie devices appeared ...
My best idea (apart from buying it from sources allowing return without penalty) is to see if external pcie enclosure can be connected to your more portable laptop, and try to go to physical place where you can assembly whole setup, including source . Some kind of linux user meetup, may be?
Ok. Even that video capture from recorded video tapes is seldom these days, I thought to follow up this subject for later info cases. Within a month or so, I have decided to order and test out the mentioned Magewell Pro Capture AIO PCIe card. The dealer doesn't offer «30-Day Money-Back Guarantee» for special orders, but in EU and EØS we have at least 14 days Right of Withdrawal. What I have tested on beforehand, is that the downloaded Magewell kernel/hw-driver compiled successful on my system. The Magewell technical support has clarified that a native V4L2-based FFmpeg capture command will be limited to 8-bit formats such as YUY2 or UYVY. Here is Magewell's complete reply for anyone interested : *1.Kernel Compatibility* The current official Pro Capture series (both Pro Capture AIO and Pro Capture HDMI) Linux driver fully supports compilation and stable production operation across the Linux 6.x kernel family, including versions 6.4, 6.12 and 6.18. Linux kernel 7.1 has not completed official compatibility testing and validation at this time, so we cannot guarantee reliable, stable performance on 7.x mainline kernels. *2.10-bit YUV via V4L2* True 10-bit uncompressed YUV pixel formats (both 4:4:4 and 4:2:2) from the S-Video analog input are not exposed via the standard public V4L2 subsystem. To access native 10-bit pixel data from the analog front end, you can use the official Magewell SDK. *3.FFmpeg Pipeline & Down-conversion* As noted above, the standard V4L2 interface does not support 10-bit output with our driver. As a result, a native V4L2-based FFmpeg capture command (e.g. |ffmpeg -f v4l2 -i /dev/video0|) cannot maintain a full 10-bit pipeline end-to-end, and will be limited to 8-bit formats such as YUY2 or UYVY. *4. Analog Signal Tolerance* Line-TBC is not supported. For frame-sync, you can use the mwcap-control utility to activate sync-slice-level features, which will process jittery analog signals smoothly to avoid frame loss and connection drops.
Any tip or thoughts about how risky this Magewell option may be with regards to success or failure ?
Here follows just my collections of Magewell urls:
https://www.magewell.com/products/pro-capture-aio https://www.magewell.com/downloads/pro-capture Terje
This probably doesn't apply to you, but you might find something useful here: https://nerden.de/elgato_4k_x_usb_bos_quirk/
participants (4)
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Andrea paz -
Andrew Randrianasulu -
Terje J. Hanssen -
terjejhanssen＠gmail.com