TBC horizontal stabilization stress test part 2
Автор: AnalogVideoChannel
Загружено: 2023-09-28
Просмотров: 1321
Comparing some more devices:
Datavideo TBC-3000 - standalone TBC unit using Philips SAA7111H video decoder
Pioneer DVR-440 - dvd-recorder based on NEC EMMA2-chipset
Panasonic DMR-ES10 - dvd-recorder based on Panasonics own chipset
JVC HR-S8600EU - JVCs Custom TBC/DNR IC
As with the previous video, all samples are from a Panasonic NV-SD220 other than the last sample which is from the JVC HR-S8600 with the TBC/DNR function active. The NV-SD220 is a very basic late 90s 2-head mono VCR but it has the same solid K-mechanism used panasonics prosumer SVHS VCRs of the time like the NV-HS1000, NV-HS950 and AG1980P, the instability happened during recording of the tape, it's not anything to do with playback.
The video is recorded using a capture card directly from the output of the dvd-recorders, not to the dvd-recorders themselves.
Some notes:
This is a very extreme sample probably caused by some issue with the camcorder during recording. I've never seen the pioneer been thrown off like this on other tapes and even the datavideo doesn't normally go this off even though it doesn't do a great job at horizontal stabilization in general. As one can see in the previous video if one examines closely, it even manages to slightly upset the Panasonic DMR-EH58 very slightly at one spot while the slightly older ES10 manages to power through.
This sample may also be making the JVC TBC look a bit nicer than it is, while it works very well here, it is somewhat prone to vertical jittering instead which isn't triggered by this particular recording but can be an issue on others.
The video levels were lightly tweaked in post to somewhat match but this video should probably not be used to make any strong judgement about fine detail image quality on these devices still as I didn't put much effort into making sure all that was properly set up when capturing.
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