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Even though I like my 1980 that tgrant refurbed. Deter is the king of the 1980s according to most everyone. There opinions are more valid then mine because i barely use my Panasonic. We are soo far off subject though.
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I have packed all my gear away until the Panasonic DMR ES15 arrives, but I had kept some of the test captures, attached. The "Sobolewski" captures, in ProRes Proxy at ~5mbps, are from a home movie made in 1987. A friend who has loaned me his PC laptop, did so if I captured his one and only VHS tape. "Raiders", in ProRes 422HQ at ~50mbps, is from a commercial VHS. Both are PAL.
Both these tapes play nicely on TV. No artifacts whatsoever. But, the Sobolewski is unwatchable when captured, yet the Raiders one is quite okay. Same setup in every case, but I ran the Sobolewski captures at a lower bit rate. VCR: JVC HR S6960 connected via S-video to… Capture unit: AJA Io LA connected via Firewire 800 to… Computer: 2011 iMac, running under Snow Leopard using AJA's VJR Xchange Sobolewski 01 is before the video starts. Everything should be black, but we have a green flash. Sobolewski 02 is at the start of the video, taken on a wobbly tripod. It has one weird flash. Sobolewski 03 is a nasty piece of work. Puts me of capturing at home, I can tell you that much. Raiders: a nice piece of work, ProRes 422HQ at 10 bit. The Raiders capture came before the Sobolewski captures, and I didn't go back to check that Raiders still captured okay. Maybe the AJA suffered a serious fault inside during the Sobolewski captures. I still don't get it:
-- merged -- I've just imported the Sobolewski video into Premiere to have a look. I've never bothered with Properties before, but there's a wealth of info there: File Path: /Volumes/TSB USB DRV/T.mov Type: QuickTime Movie File Size: 120.7 MB Image Size: 720 x 576 Frame Rate: 25.00 Total Duration: 00:01:57:08 Pixel Aspect Ratio: 1.0940 QuickTime Details: Movie contains 1 video track(s), 0 audio track(s) and 1 timecode track(s). Video: This movie appears to have DROPPED FRAMES. There are 2246 frames with a duration of 1/25th. There is 1 frame with a duration of 3/25ths. There are 4 frames with a duration of 4/25ths. There are 4 frames with a duration of 1/5th. There are 3 frames with a duration of 6/25ths. There are 3 frames with a duration of 7/25ths. There is 1 frame with a duration of 8/25ths. There are 6 frames with a duration of 9/25ths. There are 7 frames with a duration of 2/5ths. There are 10 frames with a duration of 11/25ths. There are 10 frames with a duration of 12/25ths. There are 2 frames with a duration of 13/25ths. There are 2 frames with a duration of 22/25ths. There is 1 frame with a duration of 23/25ths. There is 1 frame with a duration of 1/second. There is 1 frame with a duration of 57/25ths. There is 1 frame with a duration of 72/25ths. Video track 1: Duration is 0:01:57:08 Average frame rate is 19.64 fps Video track 1 contains 1 type(s) of video data: Video data block #1: Frame Size = 720 x 576 Compressor = Apple ProRes 422 (Proxy) Quality = Most (5.00) Timecode: Timecode track 1 contains 1 type(s) of data: Timecode data block #1: Start Time = 00:00:00:00 Reel name = 001 |
#1 The green flash is the capture card failing/glitching, possibly the software, nothing to do with any VCR/TBC. That has nothing to do with the incoming signal, that's entirely internal to the card/computer.
#2 The "weird flash" is a glitched frame, and again it's from the capture card. Not software. And it may be induced by lack of frame TBC, but not as likely. #3 You're dropping frame, duping frames, and the card is freaking out. Again, fault of card, unknown if due to lack of TBCs. You may have a bad capture card on your hands. At very least, touchy. |
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VCR or buying different capture card or do some restoration . But I can understand what was the reason for that. It is alllllll about how VHS tape was recorded |
Notice in that youtube video, not only RF signal gets weak and RF noise increases, Line timing starts to drift off as mechanical inaccuracies get compounded over generations. It will be interesting to see the same experiment with a VCR equipped with line TBC to see how far it can maintain decent line timing.
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I've seen a similar video on YT before and the artifacts are similar, In that video they skipped few copies to get the completely noisy picture at the end, the video would be too long to show every copy.
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Oh no. For the purpose of high-quality results, VHS ProRes hardware capture should absolutely never be done at anything less than 422HQ. Why did you choose to use Proxy for capturing anything?? Quote:
But we already know this because the hardware required in order to run the software you're using is already capable of data rates many times faster than 60Mbps in the first place. You'd have to dig out a fossil to find a machine that could choke on 8MB/s. Quote:
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Assuming you have the ES15 by now, turn VCR line TBC off (if equipped) when using. Quote:
Address in the following order: 1. No surprise, home video, need something to help stabilize between VCR / capture device -- you state ES15 will be added for this purpose -- 2. ES15 may need/ want recap work 3. Io box may need/ want recap work Quote:
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300 dollars is a steal on that capture computer and the card. |
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