Capturing VHS with the AJA Kona LSe card?
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Ok, so after a lot of adventure, including having the AJA Kona LHe card I bought disappear in shipping, four months later I finally have almost everything ready.
My setup looks like this:
The capture software I have available is:
I did a test capture today with Premiere Pro. It had three options:
Filename: Untitled Clip 01.avi Contains: VT-8710 external TBC + VCR TBC Link: https://easyupload.io/1g58fq Because of the size of the uncompressed AVI, I used FFMPEG to compress the others with FFV1 compression. I'll leave the above original for reference. Filename: capture.zip Contains: AVT-8710 external TBC + VCR TBC, VCR TBC only, No TBC Link: https://easyupload.io/x9l1pn Attachment 12121 Is it just me or does the picture look better without the TBCs? Is this a setting problem? I'll have to test some more. Anyway, I was wondering what the best way to capture VHS with the AJA Kona LSe card is? What software should I use? What settings? Thank you for your help! |
Going by the pictures, it looks like the Kona LSe has some TBC functionality, it seems to be correcting horizontal wiggle like the VCR TBC does, otherwise no-TBC one would look less straight. From images on google it has one of the chips from Analog Devices, many of which have that functionality. Whether it can fulfill the function of the AVT as well i don't know, hard to say without the video.
There is a bit more contrast on the no-tbc picture, so maybe you just need to adjust the contrast or brightness a bit on the AVT or capture device, taking care to avoid clipping. I haven't used these cards, so I don't know what tools there are for it. On the left example the no-tbc picture is not the same frame as the other one, either you picked out two different frames, or there is something causing the field order to be different. |
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Regarding frames, I'm not sure which picture you are thinking of, but I tried to eyeball it as best I could in MPC and then just took a snapshot. I figured it would at least give people a quick overview in case they didn't feel like downloading gigabytes of video. Edit: If you are talking about the horizontal lines thing, then that is present throughout the AVT-8710 TBC video clip, but not in the others. I don't know why. |
Looked at the clips now, it does look like the causes the fields to be out of phase for some reason compared to the clips without the AVT, that's odd. The JVC camcorder does that sometimes, but wasn't aware of a one of the oft-used TBCs causing it. It's something that can be fixed in post with an avisynth script, or with a bit more fumbling with ffmpeg (it may sometimes be needed anyway on TV recordings of stuff from film sources as they're sometimes not in phase.)
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Looks like the AVT TBC is blurring the picture and dimming it. leave it out unless needed. Another member here used the AVT with the BE75 and results were exactly like here, but taking out the AVT produced a sharp and more contrasted picture. Stacking TBC's is not always good especially when mixing consumer and pro TBC's.
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I noticed in the manual that the AJA Kona LSe has a 5 line adaptive comb filter. I understand that this is a good thing, though perhaps not as good as a 3D filter?
Anyway, I sent an e-mail to AJA support and asked them what capture software they would recommend and they said to use the Machina software that came with the drivers. As I was poking around in the settings I noticed a "Reference" setting with the options "Free Run", "External", and "Input". Attachment 12123 I wonder if adjusting this setting would help with the fields? |
Comb filter works with composite input only, It is not needed for S-Video input. The reference I believe is the timing signal, Input defaults to the signal being captured, External is if you are connecting to an external reference signal to one of the connectors labeled external, Free run could be the TBC of the device. I'm not sure you'll have to read the manual.
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I was thinking about those horizontal lines and decided to try using VirtualDub to deinterlace.
Attachment 12124 Looks like an improvement to me. Though I'm not sure why it is necessary to do this in this case but not in the others? |
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Genlock (Freerun, Ref In, Video In)Selects how KONA LS will synchronize program video: Freerun: in this mode, KONA LS generates sync without an external reference source Ref In: directs KONA LS to use the Ref Video source for sync (usually an analog black burst video signal) Video In: directs KONA LS to use whichever video input source has been selected in the Inputs tab window for sync When I'm recording in AJA Machina, if I press the red record button too early I get a message "Error - No Video Input is detected". If I press it later though, I miss the first couple of seconds of video. Can anything be done about this? |
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if there was still analog signal channels then maybe the internal tuner in the VHS can work to but im not sure if it will work to trick the capture card i remember i have done something similar About the Pal Film interlace thing here you can see how to fix it POST NR:35 then no need to deinterlace it looks like progresive but itīs interlaced video http://www.digitalfaq.com/forum/vide...quality-2.html Pal VHS Film if you do in avisynth SeparateFields() you can see that the 2 fields are the same or look the same in time and if you see then interlace lines then you have to trim the start field so it get align but you see better in the link i did post how to fix that itīs good to always test SeparateFields() on PAL vhs tape and see if itīs real interlace or fake interlace hehe or how do i say it :) but if the 2 fields look difference in time then itīs real interlace video :) |
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Good :)
here is a example how to trim the start field to align it you have to edit AVISource("D:\VHS.avi") and maybe change to AssumeBFF() but im sure itīs AssumeTFF() Code:
AVISource("D:\VHS.avi") Code:
AVISource("D:\VHS.avi") |
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In other news, I've been testing with an old home video VHS tape from 1993. This particular tape had disappointing performance even when new and the years since haven't helped.
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thinking if Canopus AVDC-300 can work as passthrough to stabilize the signal to your aja capture card if you still have it
i see that Canopus AVDC-300 have input and output s-video i use my Matrox MXO2 as passthrough to stabilize the signal to my Aja IO HD i connect them with SDI to SDI cable it was best quality i did try component cable and hdmi cable but it was not as good quality as sdi to sdi cable i do have a DataVideo TBC-5000 but it degrades the signal little the Matrox MXO2 as passthrough i like this method more best quality is of course VHS > Aja IO HD but it does not always work very unstable |
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I captured the tape once without the TBC and I'm currently capturing it a second time with the TBC so that I can compare. Another 30 minutes to go... |
Aerith ok :)
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You are using the wrong settings, you shouldn't have any problem capturing lossless with this card even without the AVT, get with Jwillis he has a similar setup on a mac he might be able to help you, meanwhile post all the screen options available we should be able to tel you what to select and what not to select.
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Premiere is NOT a capturing software, but an NLE with some pretty crappy capturing functionality built in. Great NLE, use it myself. Miserable capturing tool. Don't use that. Although it has proved itself pretty buggy (therefore lousy) with many carsd, have you tried VirtualDub2 for capturing? It may work, as the capturing abilities have been expanded (though at the cost of somewhat messing up cards that had worked flawlessly in 1.9.x official), Also please attach small clips to forum posts. There's no need for us to download 1gb+ longer files, and in fact some folks cannot (thus not be able to help). Quote:
To test if a true line TBC is working, it also needs a harsher timing test, something very obvious. I've seen far too many instances where line TBC is claimed. Yet, whatever it was, was really weak and had very little effects. It would fail a harsher test. BTW, if the Panasonic line TBC is on, any downstream correction would either be minute or non-existent. So the NV-HS1000 TBC would need to be off. Quote:
Never been too quick to place blame. All we know is that the workflow as created is rejecting the TBC for whatever reason. Not that the TBC is bad. (Although a main difference here is that the TBC was already vetted to work well, in another workflow use case.) Quote:
Has this been recreated with multiple sources tapes of wildly different origin? (ie, not made in same camera, same VCR, etc) Quote:
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A better suggestion is the ES10/15 units, for this same purpose. Quote:
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Use 12V 1A or 15V 600mA, center-negative. While "amps don't matter" is usually true, that because the device will just pull amps needed. But if the device isn't well made, therefore a dumb device, and pulls unneeded amps. "Amps don't matter" is a common statement, but always contains a * from knowledgable users. All rules have exceptions! Too many volts blow a device. Too many amps can make it misbehave and act erratic. |
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Attachment 12135 Attachment 12136 Attachment 12137 Attachment 12128 Attachment 12129 Attachment 12130 Attachment 12131 Attachment 12132 Attachment 12133 I am curious about the "YUV<->RGB Range" setting? Options are "CGR" and "SMPTE". |
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When testing I record 2 minutes of video so that I can look at different scenes. However, as I'm recording uncompressed, this means a ~2.5 GB file size. I could try shorter clips (30 seconds?) and compressing them with FFV1 if that works? I have VirtualDub and VirtualDub2 installed and unfortunately neither can detect the AJA Kona card. Quote:
Therefore, I've decided to just leave it off from now on. Quote:
The tape I was testing was a commercial tape of the movie "The Net" with Sandra Bullock. I haven't noticed this in the home movie tapes I've been looking at since. Could it be some form of copy protection? Quote:
I'm using this universal power supply. It's the second more powerful one; 3–12 V @ 2250 mA. |
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