![]() ![]() In 576/50Hz land the actual 4:3 or 16:9 image is in the central 702x576 section of the 720x576 image (with 9 samples of padding either side (18 in total) - which is there to avoid truncation of transients etc. In both 480 and 576 the 720 samples in a line horizontally mean that 720 sample line is a bit wider than 4:3 or 16:9 Yes - important to remember that 720x480 and 720x576 are not actually 4:3 or 16:9 wide. Is this process okay? I didn't notice the extra 16 pixels before but now I see them. He says YouTube will only preserve 60fps if the video is at least 720p so you have to increase the resolution and when he does that he corrects the aspect ratio by not doing a 1:1 increase. Also, ALWAYS RESIZE *AFTER* DEINTERLACING. If you do it yourself, you get better results. This is because some drivers actually only support 720x480 and resize themselves, usually with a lower-quality algorithm. ![]() Shouldn't I capture in 640x480?Ī: No, you should capture at 720x480 and then resize to 640x480 after deinterlacing. Q: 720x480 doesn't always look right in players. In the description he says you can resize it after you capture it: "The typical digital representation of NTSC analog video is this slightly strange aspect ratio of 720x480" "I've been capturing at 720x480 based on the instructions in this tutorial video: I linked to my reply in another thread where sum_guy posted the same thing you're responding to here. ![]() Most people set the aspect ratio from 720 which will give a horizontal squeeze of about 3% and nasty black pillars on the sides of the frame. So no, Capture at the native hardware resolution of 720x480 (720x576 PAL/SECAM), Crop to 704x480 using vdub2 (removing the 16 black pixels added by the card as a safe overscan) and set the aspect ratio to 4:3 from 704x480 not 720x480. The hardware samples at 720x480 (regardless what the VHS's equivalent resolution is), any resolution you choose at the output will be a resize by the software. If your capture card can't capture in resolutions like 352x480 or 512x384, use VirtualDub to do it by choosing the option "set custom format" under the "video" menu. At last, if you want to make a VCD compliant video stream (which MUST be 352x240 at 29.967fps), capture at 352x480 at 29.967fps (this way you get both fields), and then resize it to 352x240 using VirtualDub with the "precise bicubic" filter on. Now, if you don't need such perfection, or your system can't keep that up, use 512x384 at 29.967 and the result will look quite as good as 640x480. However, Some would say that such a high resolution for a VHS source is a waste of time and space, but I suggest: if you like things perfect, try that resolution. You can do that with software like Adobe Premiere or VirtualDub. If you want your capture to look just like the VHS source (unfortunately it can't look any better), capture at 640x480 at 29.967fps, and then DEINTERLACE it. I'm really starting to think the card has gone bad. ![]() The Windows XP VM works just like the Windows 7 PC. I just set up a Windows XP VM to test your theory that some update messed things up, because if there is any OS that hasn't changed in a long time, it's XP. If you set it to PAL it doesn't insert any frames. I also tried it on an old Windows 7 PC and interestingly, the FPS seems to be locked to 25fps (even if set to NTSC 29.97). I also tried the capture card on another Windows 10 laptop and had the same issue. (ie since I installed the the driver fresh no past updates could have changed settings the driver depends on, as the driver would just set them appropriately the first time) On the computer I originally had no issues with, that idea is a possibility, but on the second Windows 10 computer I installed all the drivers/software fresh and it still didn't work. If it worked in the past and now it is not it is obvious that Microsoft changed something via updates, Try finding and re-installing the capture device drivers. ![]()
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