by Dolph_Fan on 06 Jun 2004, 23:36
Not due to NTSC in this case. I viewed the original video for quality, i.e. not the JPG captures. The original was heavily compressed to reduce space, resulting in loss of quality. A second JPEGing over the existing artifacts/distortion to reduce filesize with also even MORE loss of quality also contributed.
NTSC is slightly worser than PAL, about 20%. IT has less lines (resolution/detail), small range of colours. In the case of Direct Action video, pure uncompressed NTSC would yield a better picture than the screen captures, and even better than most/some (I dont know I don't use DVD) the DVD's you play at home etc on PAL systems...
Those 'stripes' are due to 'interlacing' in the video's frames. They are actually the odd/even lines of the current/next video frame (dependent on which you consider are the lines of the current frame in relation to the lines for the other frame of the 2 frames that are present in the interlaced video frame) .It is possible to 'get rid' of those stripes by two methods, 1. Capture the frames the correct way, 2. After there is material captured that contains the 'stripes', you can use the 'deinterlace' process/operation in software to diminish the lines.
The lines are usually where moving objects are.
You can convert NTSC to PAL and vica version. Look those dual NTSC/PAL video recorders, proof. Also in production methods there are techniques. Also in video software.