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The difference video, film, etc

 
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Indy



Joined: 25 May 2003
Posts: 1

PostPosted: Sun 25 May 2003, 1:00    Post subject: The difference video, film, etc Reply with quote

How are defined the formats(?) I see references to 'Video', to 'Film', to 'forced film' and possibly others.

e.g., when I capture a tape from my vcr to my computer (using aver_ez_dvd and their capture card), what form is the input? (V,F,?)

I would presume that all videotape are in video format, however, they are from films, so I am confused.

Having a GREAT number of video tapes and wanting to preserve these, I remain... confused and wanting.

ciao
Indy
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RMN
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Joined: 04 Feb 2003
Posts: 587
Location: Lisboa, Portugal

PostPosted: Sun 25 May 2003, 17:11    Post subject: Reply with quote

The word "film" usually means 24-fps non-interlaced input. 25- or 29.97-fps non-interlaced input is usually referred to as "progressive-scan video". 50- and 59.94-fps (note that here the f stands for fields not frames) video is normally described simply as "video".

Unless those tapes were recorded in a 24-fps mode, they are in a "video" format. In PAL, interlaced video made from film is usually exactly the same as non-interlaced ("progressive") video made from film. In NTSC, virtually all video made from film is interlaced, as this helps disguise the "incompatibility" between 24 and 29.97 fps (PAL movies are simply sped up 4%, so the frames match).

So generally you should set the source as (interlaced) video. This is assuming your capture hardware captures full-resolution images (ie, 576 lines in PAL or 480 lines in NTSC). If it only captures half the lines, then it's non-interlaced video.

RMN
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