AV sync in VirtualDub with the ATI 600 USB?
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I'm trying to capture a VHS tape using the ATI 600 USB, but I'm having trouble getting the audio and video to stay in sync. I set my timing settings based on recommendations in this thread and have attached a screenshot.
I am capturing using a modern quad-core desktop, and I am saving to a different drive from the OS drive. Does anyone have any idea why my audio is drifting out of sync? |
Did you finally decide on a tbc? Are you using one for capture?
http://www.digitalfaq.com/forum/vide...html#post40460 There are several settings that affect audio sync besides those shown in your posted image. These include the way capture is started ("Start capture", F5, or F6), using Overlay, using Audio Preview, disabling sync options without a TBC in circuit, etc. Many are described in this thread: http://www.digitalfaq.com/forum/vide...-settings.html. |
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I never actually got a TBC, unless you count the one in my JVC HR-S7600U, and now that you mention it, with the sync options turned off, it kind of makes sense that not using one would be a problem. I changed the options originally to match that thread because I noticed some problems, like the audio pitch changing at times (presumably to compensate for something). The reason I never bought one is risk. I've read about problems with the black AVT-8710, and I've read about different issues with some TBC-1000 units on here. No matter what I choose, it seems like there is real risk that I'll end up with something bad. I do happen to have a Panasonic DMR-ES15 lying around (we actually used this for its DVD recorder functionality back in the day). I know this isn't really a TBC, but should I try passing through this? Would it hurt the quality I get out of the tape? |
If you don't want to use the AVT-8710, and don't trust the ES15, and aren't looking for another tbc unit, I'm afraid there's not much more one can offer for solutions. Perhaps you've overlooked the hundreds of posts and reports from people who've used the ES15 for pass-thru. If you're afraid of that one, the ES10 is very slightly better. I've used both. I've posted dozens of captures made with my ES10 or ES15 for pass-thru.
Original capture of bad tape/bad signal non-TBC VCR w/Panasonic pass-thru: Liv5A_cut_EP_original_cap.mp4 unprocessed. Same pass-thru capture after cleanup: Liv5A_ivtc_cut_EP_playback sample.mp4 The ES10/ES15 have decent frame timing, even with crummy tapes. They're just not full-scale for defeating Macrovision. |
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I also never said I didn't trust the ES15! I was just asking if using it could hurt anything. |
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You might not like the way the TBC-1000 softens images. I sure didn't. |
Hmm... I just captured the tape again through the DMR-ES15. The audio is still out of sync. Any ideas?
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Hmm. From things you mentioned earlier:
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The discussion in the newer thread is in 5 parts. Look over the text as well, as the pictures don't always reflect your specific capture device. If you find nothing there that solves the sync problem, look into any background apps running in your operation system (example, I stopped using AVG Antivirus because it slowed down the whole world and kept telling me VirtualDub was a virus!), I'd suspect that either you need a stronger tbc like those you mentioned to correct a major source problem, or the timing clocks in your ATI 600 USB are going haywire. |
Overlay vs. preview is very system/hardware dependent. Even 15 years later, I don't understand why this is. In theory, overlay should almost always work best. This is what I use on (almost) all ATI AIW cards.
This thread is a work in progress: http://www.digitalfaq.com/forum/vide...-settings.html A few members are being asked to submit their settings. When I make my final guide, I don't want to overlook anything. sanlyn has been very thorough, and matches what I do about 95%. I'll explain my differences in there later. That post should serve you well at the moment. I may have one last TBC available. I've been busy in recent weeks. I'll check that soon. ES10/ES15 has artifacts. In general, yes, it's not a good choice for TBC. It's ideal for instances when the correction of tearing outweighs the slight addition of temporal and NR artifacts. Even with NR off, it posterizes. Many do not notice the artifacts, and the degree of artifacting varies highly based on the source tape. But I see it. After 20+ years or converting tapes, I see everything -- even if I don't want to! Just for test, have you tried ATI CMC with a high bitrate (15mbps) MPEG-2 capture? See what happens on the sync. Report back. |
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I tried doing another capture, this time with the TBC on the 7600 turned off, and still running through the ES15. The audio still drifts out of sync. |
It's strange that you're capturing to uncompressed YUY2 when all the examples you've been directed to show capture setup for lossless huffyuv YUY2. You seem to be misunderstanding or mistaking some steps, but since no one here can see your computer screens it's time to let us know what kind of settings you're using and what Windows version. If you're using settings that you've already found in other examples, let us know where you found them. Audio will drift out of sync if you're capturing audio in compatibility mode without the need to do so. For example, what do you show for your audio source and audio input in the Audio menu? At the bottom of the Audio menu, what device do you have selected for audio? How do you start your captures, by clicking on "Start Capture, by pressing F5, or by pressing F6?
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All good points. I just did another capture though, and it's still out of sync. This time I was compressing to HuffYUV. This PC is running Windows 10. The audio device is set to "Capture device", audio source is set to "Audio Line", and the audio input submenu shows "No audio inputs". And I started the capture by pressing F6.
-- merged -- I tried it on a different PC (a Windows 7 laptop) with ATI CMC, and ended up with obviously dropped frames. This is frustrating the hell out of me. Is there a chance this ATI 600 USB is defective or something? -- merged -- Just to try to rule out any potential problems with my tapes, the VCR, and the lack of a TBC, I've done tests trying to capture the ES15 just playing a commercial DVD. Sure enough, I'm running into the same issue with audio sync. What is going on here? -- merged -- I think I found a solution: AmaRecTV. I have no idea why I was having so much trouble with VirtualDub, but AmaRecTV seems to be working very well. I've captured a couple of tape, not even using the ES15, and the audio sync and pitch seems fine. I don't see any evidence of dropped frames either. |
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