Many thanks for your hint to how made a sample from the videos. I exactly need this kind of support on some points

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I have attached some samples to show you the lossless captured video quality.
Video1-2-3-4: Original tape recorded with Kyocera KX-77 video8 camera, after it was transfered to VHS. I captured with AIW system described above
Video4_DV:Original tape recorded with Kyocera KX-77 video8 camera. I "saved" with Sony DCR-TRV 345E via DV (from video8 tape)
My concern is, that the captured lossless quality is not, what I'm looking for. I would like to be ensured, that the capturing what I did, is OK (I can imagine, that with tapes recorder with this Kyocera camcorder and after transfered to VHS with "how knows what kind of" VHS recorder, that is the max quality, but I do not know really). If it is theoritically OK, than I would like to make some post-process, filtering on it, because from my point of view it is not in good state. What I do not know, how many possibility do I have to filter these. Which kind of filters should I use, ect. I'm beginner.
My second concern is the DV "saving". If we compare the Video4 and Video4_DV file, that I can state, that Video4_DV much more better, than Video4. And that is not the conclusion, what I can read from expertised peoples.
If I can reach the same quality, with AIW captured file, with filtering as the DV save, I would reach my goal.
Concerning de-interlacing, I'm not sure, that it is what I have to do, but that part is concerning to the "necessary post process, filtering question.
What is your opinion ?