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I hope it continues to work as you currently see. :salute: |
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Well, I’m back again. I had to make some workflow changes as the SR-MV45 that I bought from LS gave up the ghost, so I’m on a VS30U that I got for a decent price. Also had to reinstall windows 7. Sadly, this problem has popped up again and I have no idea how to fix it. I’ve tried everything that worked before in this thread to no avail. The volume meter roughly matches the video preview, and for what it’s worth it matches the CRT I’m previewing on as well. But when watching it back the video drags behind by almost a full second! Any ideas on anything else I could try?
VS30U -> DVK -> ATI USB -> Windows 7 Box -- merged -- With more testing, this happens in 32 bit, 64 bit, vdub2, everything. And it seems like it has to be something on the encoding side, since it's in sync in preview, although I don't entirely understand how vdub handles the preview. It's certainly an issue with vdub though, as AmaRec handles it fine with no desync. Not sure if amerec is "good enough" by LS standards, but if I don't find anything else on fixing vdub, looks like it might be what I go with. I've attached samples from the same tape as a few months ago, to show what I mean. Anyone musically inclined could pick up on it more, but looking at the mallet players toward the end of the clips makes it evident. |
SR-MV's are also ones that I've got a fair amount of refurbishing experience with. Their main pitfall is that they use some crappy caps in their power supplies as well as in the DVD recorder section and some SMT caps on the DVD drive. I'm not sure that would cause poor rewinding specifically, but maybe. Usually they get stuck saying "loading" indefinitely when there's a "significant enough" capacitor issue. A lot of mine also have dim displays that don't seem to be correctable with recapping, so guessing the failed caps if they are failed for long enough causes some sort of permanent damage to the display, but luckily that's more of a cosmetic thing and it's still readable "enough" to get by and it doesn't affect playback at all.
The audio thing really seems like it's speeding up or slowing down the audio to match the frame rate (which is one of the sync options), but even for that, it would seem like you must be dropping a lot of frames for the audio to fluctuate that much. I take it you aren't using a frame TBC? |
I think the video circuitry went out, probably that entire board that's connected via the world's flimsiest ribbon cables. It had some sort of internal sync issue it looked like, there was just colorful garbage on the screen with occasional bursts of the true image coming up. I gave up on it. Sucks considering I way overpaid for it in the first place... Got a VS30U on eBay for less than a quarter of the price I paid LS, works far better than the MV45 did.
On the audio issue, it's not speeding up or slowing down in vdub, I specifically selected to NOT have that happen after it butchered a few other captures with awful warping. It's all the right speed, just off. No frame drops or at least very few. I am using a DVK-100 as frame tbc, VS30 has an integrated line tbc. everything lines up on displays, on preview, etc, but the final file is desynced. It's very strange. I'm using Amarec at the moment as I can't put this project off any longer, I have to get this done. It's been delayed for so many reasons for the past year. I'd like to use vdub though as Amarec is pretty limited in weird ways (like seriously, why can't it write to something that ISN'T NTFS???) |
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In the "from VirtualDub" clip, I immediately see a 10-frame "stick" at the start of the video. 10 frames is about .333 ms. But there's also some jumps in there, which may have confused something. The encoding to H.264 may also be a problem, because there's a chance that an encoder misread audio/video start. In that tiny length H.264 converted clip, what I see is a 600ms delay. If you load the file into VirtualDub2 (because it can natively read the H264 in MP4 wrapper), and then go to Audio, and Interleave, adjust it to 600 ms. It's now in sync. BTW, is that a BOA Nationals competition in Indianapolis?! (I don't think you're old enough to have been in that, when it was in the Colt's Hoosier Dome, so what relation are you to whoever was in it? Parents?) Also, marching band videos confuse deinterlace algorithms, so I have some tips, at a later date, after you're done capturing, and are looking to process anything. Definitely keep the interlaced captures. I have never found a perfectly satisfying deinterlace filter for these sorts of band videos, but hopefully we get something someday. Quote:
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However... When you've exhausted suggested/proper software, including adjusting settings, and it's still not working for you -- especially if it's causing anxiety/whatever -- and/or especially when it's giving you stress/grief because you're trying to meet some sort of deadline -- then go for it. Video capture is hard. I try everything I can to make it easier for others -- the hardware suggested for both quality and ease of use, the software (and settings), etc. But because video capture has so many variables (the tape signal, the computer/OS, etc), sometimes you just have to settle. The important thing here is you tried. Most people try, and do succeed. Some try, and fail, and it's not their fault. You kept trying, you found something else that may suffice. Again, go for it. VS30 > DVK > ATI + Win7 + Amarec = you now have your method. Get to it. :) Although, again, what I'm seeing is just a 600ms lag, for whatever reason. I think that could be solved. But as a home user, non-hobby, family videos only, I don't know that it needs solving, unless you're just a person that hates it when "computers win". ... and I'd really enjoy hearing more about the band video, including seeing your final capture. :thumb: FYI, in another life, I was involved in marching bands, in various roles. Always enjoyable. I probably saw 1,000 bands over the years. That's something I haven't been able to do in over a decade now (due to health). |
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Anyway, I am definitely keeping the original files for all of these. I have plenty of room (hopefully). Would certainly like to know how to do better deinterlace on marching arts recordings. I have DCI, other high school level stuff. Both of my parents were involved for years in various bands. Quote:
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https://drive.google.com/drive/folde...usp=share_link Quote:
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Just spend $15 on the OEM remote, JVC LP203030, those programmables never work correctly, missing things like manual tracking (with SP/EP to engage/disengage, and up/down to change).
Ah, yes, use DVK on actual captures, not the deck for testing, if you're doing both at once. (But then, what about capture card and computer? You have two of those now as well?) I'll have to pull out that video, I don't remember off-hand, not seen it in decades. Clones look different than the actual ATIs. Those are not "fake", just badged different, different software/drivers. Alright, ATI, check. And Win7, correct? Confirm. Finally, post a screen capture of your VirtualDub 1.9.x timing settings. |
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