Jerky Playback When Using analog-digital Converter?

[StevieB]

I am a rookie at all this so it took me hours to learn an important lesson:

Videotape (analog) footage fed through an analog-digital converter (e.g. Canopus) should be treated as digital (not analog) footage -- when establishing settings -- because it enters the computer, through a firewire connection, as digital footage. Therefore, “Lower Field First” is the correct setting . . . not "Upper"

I was feeding wonderfully-preserved 18 year-old JVC VHS-C tapes (been keeping them in a dry, cool basement all this time) and put the capture and burn settings to "Upper" . . . played back great in the computer but jerky via DVD player/TV

Finally dawned on me that I needed to treat the source footage as digital because it's being tranformed as it enters my computer . . . changed setting to "Lower" and plays back perfectly now . . .

[jchunter_2]

Stevie,
Are you absolutely sure that you did not change anything else - eg capture properties or project properties or BURN properties? Your report conflicts with what a number of other users have experienced... What mocel of Canopus capture box do you have?
John

[GeorgeW]

the original post sounds right, and makes sense since the video is being converted to DV .avi's...

[THoff]

I have a Canopus ADVC-300, and I can confirm that the proper field order setting should be lower first.

[StevieB]

John:

Thanks for responding . . . T and George -- thank you as well.

John -- I have an ADVC 100 hooked via firewire to my computer and and a Panasonic SVHS cabled to the converter via an SVHS cable (and audio cables, of course).

Lower field vs, Upper Field was the only variable I changed. I kept the following settings constant:

4:3
Variable
8000 kbps
720 x 480, 29.97
as well as the audio related variables

OK -- I'm racking my brain on this , , , there's a chance that I left the default speed at '80' during the capture mode while sliding it to 100 during edit mode but prior to creating a video file . .. but that's the only thing I can think of . . .would that explain jerky playback via DVD player/TV? . . .

Thanks

Steve

[rwindeyer]

I can confirm GeorgeW and THoff's statements. I copy VHS via the pass-through of a Sony DV camcorder. The DV that comes down the firewire is captured Lower Field First.