http://www.curtpalme.com/forum/viewtopic.php?t=39508 (Ask any more questions you have about HDCP 2.2 strippers in that other thread.)
...and HDMI 2.1 is coming. It is rumored to be making its debut on consumer electronics in 2018, to provide support for dynamic HDR whenever it becomes available.
...and I think I'm done with this thread, since your interest now seems to be in very expensive pro devices, the proper use of which is beyond my level of expertise. Good luck.
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Last edited by usually_quiet; 27th May 2017 at 11:42.Ignore list: hello_hello, tried, TechLord
usually_quiet, thanks very much for the great links and info. And thanks for doing it when you were tired.
Does that mean that you can hear multichannel sound (5.1) with the Magewell card but you canīt record it due to lag of software currently avaiable?! Also with the beta software no multichannel lpcm recording support?...I will know soon, Iīve bought one today.
Can I hear and record with Decklink Mini Recorder 4K with Blackmagic Media Express Software multichannel lpcm (e.g. 5.1) via hdmi?
I have a Hauppauge Collossus2 here and also Skydigital U3T and Skydigital Supercast X. (all with AC3 support)
But I want to get rid of the lag from the Collossus2 (~1 second) and the Skydigital devices are flaky with my computer equipment.
Last edited by xxxxx; 28th May 2017 at 06:10.
xxxxx, exactly which Magewell card did you buy? And where did you get the beta software for it?
And did you have any luck capturing either an AC3 stream or uncompressed 5.1 ch audio on either of your Skydigital devices?
Hello end-user, you can record ac3 stream and record uncompressed video with the skydigital SuperCastX6 (tested with Ut Video Codec).
With the U3T also (no tested but the same software)
But they are flaky. e.g. sometimes BSOD in windows 8(10) with my mainboard, perhaps a hardware config error or a driver error?
The Hauppauge Collossus 2 also records ac3 but with video compressed. (max. bitrate 14000kbps)
This card is very stable, no problem with recordings at all. But it has a live video delay of 1-2 seconds (thats to much for me.)
I think Iīve bought the same card as jaibubwan, the Magewell Pro Capture HDMI.
He said in his posting that he has become a beta software.
Last edited by xxxxx; 28th May 2017 at 14:28.
And by U3T do you actually mean U3.0?
usually_quiet provided this Sept 2013 link from a guy who said he couldn't capture 5.1 on a Skydigital U3.0. If you have a Skydigital U3.0, would it be asking too much to see if you are able to do it??
Ignore list: hello_hello, tried, TechLord
Have you successfully captured uncompressed video + 5.1 LPCM on a Blackmagic product?
If so, would I somehow be able to convert the AC3 stream coming out of the DVR to 5.1 LPCM before it gets to the capture card?
So it looks like I may have 3 options: a buggy internal Skydigital CaptureX6, an external Skydigital U3.0 and a Blackmagic card that would require an HDMI injector.
xxxxx, thanks for the awesome screenshot showing uncompressed video + DD AC3 CAN indeed be recorded with the external Skydigital U3.0!
This brings up a few questions if you don't mind. Have you had any issues with the U3.0 being flaky or buggy? Is your OS Windows 8 or 10? Have you had A-V sync or dropped frame or quality issues with either of the Skydigital cards? Can lossless compression codecs other than ut video be used with either the U3.0 or the X6? In your screenshot, why is the ut video codec listed within the analog box rather than the digital box?
And how is Skydigital support? Do I need to speak or read Korean?
And is the CaptureX6 supposed to be able to capture 2160p60? It says something about that in this link but it's written in Korean!
Question for anyone: are there any disadvantages of using an external versus internal capture card?
OK, thanks jagabo for pointing out the difference. Do you think it's fast enough though or not? And will the RAID 1 mirroring configuration slow the capturing/writing process down or will it be the same as if I only had 1 hard drive?
Edit: Also want to keep the HDD used for recording fairly defragmented, as write speeds will drop dramatically if the HDD tries writing in heavily fragmented areas.
Last edited by KarMa; 29th May 2017 at 20:51.
OK, thanks KarMa, that's good to know. It looks like mine has a max sustainable transfer rate of 220 Mb/s, so I should be fine.
I did notice though, that Skydigital recommended using a separate HDD from the HDD the OS is using to do the video captures. If I wanted to add a separate 500 GB or 1TB SSD to my system to use exclusively for video capture, then transfer the completed file to the 8TB RAID 1 HDD for permanent storage, would that work?
utility built for testing this, though for some reason it only provides values for 10-bit captures. Given the data rates, I guess multiplying the 10-bit YUV 4:2:2 frame counts by 1.33 would tell you the approx FPS you can capture in 8-bit. But this doesn't factor in audio capture.
4GB test on Samsung 500GB 850 EVO SSD with only 5GB free.
And did you use the Blackmagic IP4K to do it?
Would anyone care to comment on which of these 2 Skydigital external capture cards would have the most advanced capabilities?
The U3.0 seems to capture uncompressed video up to 1080p30 + AC3
The U6T seems to capture up to 1080p60 (RGB 24bit 3mbps) and 2160p60 (YUV 16bit 2mbps) + AC3
I must admit I don't yet fully understand the quality differences between the RGB and YUV color schemes.
Also, I can't tell if the U6T records lossless and uncompressed video or if it is lossy.
And is there any site that shows all of the Skydigital products in one place? I've only been able to find them one by one.
Edit: Oh, and if any of the newer forum members are interested, here is a thread that describes some of the technical differences between internal and external video capture cards. Although it is more from the standpoint of gamers who like to livestream rather than people like me who just want to record stuff, I found it quite educational.
Last edited by end-user; 30th May 2017 at 01:29. Reason: Addition to post
vaporeon, thanks for providing all of that great info. Much appreciated.
VirtualDub or OBS or something similar and THEN losslessly compress it right? Just checking!
Multimedia section of their Korean site: http://skyok.co.kr/?cat=2
Capture Card section of their Japanese site, though it would appear they released fewer devices there: http://www.skyok.co.jp/ (dunno how to direct link)
RGB capture is useless when your source is video that was ever lossy-compressed, like your broadcast sources.
Did you see this?
Originally Posted by 'Pandora Box for Technical Experience' Korean blogger
How are you planning to archive and watch these giant lossless captures, anyway?
Whew...vaporeon, thanks yet again for the great links and info! Your latest links reiterate XXXXX's personal experience (BSOD etc.), and I've definitively concluded that the external Skydigital CaptureX6 is a non-option. Your links also show that the Skydigital U6t is a non-option, because it appears to only do lossy compression with an h.264 encoder. But it seems like I'm a bit stuck between a rock and a hard place, because I need a card that captures DD AC3 5.1 or DD LPCM 5.1. It would be great to get some input from XXXXX as to if perhaps the Skydigital external U3.0 capture card might be less buggy than the internal CaptureX6?
It sounds like I'm basically on my own in terms of support from either Skydigital or Blackmagic. Maybe it's finally time to finally follow JVRaines' advice and TRY either the Skydigital external U3.0 or Blackmagic IP4K from a vendor with a liberal return policy. B&H Photo has a 30 day return policy for the IP4K and the Korean ebay vendor has a 30 day return policy for the U3.0.
Could anyone confirm that I would mainly be operating within an 8 bit YUV12 4:2:0 colorspace?
Ah, so archiving is no concern indeed. And you have a PC connected to your storage that's hooked up to your AV receiver?
Why the Intensity Pro 4K as your Blackmagic choice? The Decklink Mini Recorder is cheaper and you don't have to worry about the presence of a fan.
this morning I ordered a 1 TB Samsung 850 EVO SSD to use exclusively for capturing/writing these video files.
Could anyone confirm that I would mainly be operating within an 8 bit YUV12 4:2:0 colorspace?
Even if you use other hardware/software, I would avoid trying to capture 1080i in 4:2:0 unless you can carefully control the subsampling method used. There is an ongoing thread where the user just switched from 4:2:0 capture to 4:2:2 because he was informed of mangled chroma.
Iīve had so far 3 Skydigital cards, SKY-CXHDMIP CaptureX HDMI, SKY-CXHDMIU3 U3 and SKY-CXHDMIP-60F Sky Capture X6.
They all record AC3, they are all(!) flaky. (random BSOD)
With Windows 8 and Windows 10 tested, doesnīt matter, Iīll get sooner or later a BSOD.
So if you want to record with a Skydigital take e.g. the U3 USB3.0 device, because you can plug it out and your PC wonīt crash. (no card=no crash)
If you plug the U3 USB capture device in there will be occasional BSOD (with my PC, I dont know, perhaps your PC performs better? or more stable?
If you want something stable than you must choose the Hauppauge Collossus 2 for AC3 recording but with a compressed video.
A toslink hdmi injector wouldnīt help you also because what will you inject? 2 channel pcm or 5.1 channel BITSTREAM dts/ac3 (no 5.1 lpcm) which canīt be decoded with your capture card except e.g. Skydigital.
What you really need is e.g. a 5.1 bitstream to 5.1 lpcm converter. If anybody knows (a cheap) one please let us know?!
Last edited by xxxxx; 30th May 2017 at 16:04.
Anyway, is there any downside to capturing 8 bit YUV 4:2:0 as 10 bit YUV 4:2:2 with BM IP4K other than unnecessarily larger file sizes? And XXXXX brings up a very relevant point about me using Blackmagic products for my primary goal of recording 5.1 audio + uncompressed video. I don't just need an HDMI injector, I need a 5.1 bitstream to 5.1 lpcm converter. Is there even such a thing?
XXXXX, thanks so much for all of that info. Very helpful. I've heard some good things about the utvideo codec, but does the external Skydigital U3.0 software allow you to use or import any other lossless compression codecs? Have you had A-V sync or dropped frame or quality issues with either of the Skydigital cards? And have you had any experience with Skydigital support?
I'm an amateur, so I may explain things poorly. Forgive that.
No, you can't hear it from the front-end apps like MageWell's recording app or popular ones like OBS/XSplit.
For whatever reason, they only play back certain channels...giving you incomplete audio.
But in the card properties, you can "see" the channels.
To capture it, I explained in the other topic:
Will post samples based on my crazy experiments soon.
Never give up!
Last edited by jaibubwan; 31st May 2017 at 16:08.
Hi with HD Capture HD CaptureU3.0 Skydigital (USB) you can also use Magic YUV or Lagarith or .... to record uncompressed video with the capture software.
I only made a few recordings about a year ago for testing purposes and all were fine with lossless video (ut video) and ac3 audio. Everything in sync AFAIK. No problems with capturing A/V.
I made two recordings for you.
[Attachment 41785 - Click to enlarge]
The customer service of Skydigital is also great
Thanks XXXXX! I think I'm going to give the Skydigital USB U3.0 a shot. I guess I can always return it within 30 days if it's too buggy or flaky.
I just want to clarify when I say that I couldn't get the Intensity Pro 4K to capture bitstreamed audio: I didn't try very hard. My digital AV sources are in a bit of disarray at the moment and I haven't had the card installed in months, or I would try again for you.
But I suggest trying the Korean card anyway, if the price isn't too much more. The method with Blackmagic would involve having to demux, decode, and remux every single video you capture even if it works.
OK, thanks vaporeon. And thanks for all of your great advice with this! Much appreciated. I'll give the Korean Skydigital external U3.0 card a chance. I can always fall back to the Blackmagic option if necessary. Is there no such thing then as a device that converts TOSLINK DD AC3 5.1 output to DD LPCM 5.1 in line on the fly, which can then be input to an HDMI injector?