VideoHelp Forum




+ Reply to Thread
Results 1 to 11 of 11
  1. Hi

    When converting a avi file to a ntsc dvd format
    there is an option where i can chose interlace or not
    can you tell me what does this mean
    what should i choose to have better compatibility result with a home dvd player

    regards
    Quote Quote  
  2. Member thecoalman's Avatar
    Join Date
    Feb 2004
    Location
    Pennsylvania
    Search PM
    Any video intended for playback on TV should be captured and encoded as interlaced. Deinterlacing it will reduce the quality, even make it appear choppy.

    Take a look about 1/4 of the way down the page:
    http://www.digitalfaq.com/dvdguides/capture/understandsource.htm
    Quote Quote  
  3. Originally Posted by bambam
    Hi

    When converting a avi file to a ntsc dvd format
    there is an option where i can chose interlace or not
    can you tell me what does this mean
    what should i choose to have better compatibility result with a home dvd player

    regards
    If your AVI file is interlaced select interlaced.
    Quote Quote  
  4. Ok thanx
    and if my avi is not interlace should I convert it to interlace ?
    Quote Quote  
  5. Because the results will be a little better if you leave it progressive.

    If you take a non-interlaced source and convert it to interlaced MPEG2 for DVD, the MPEG encoder will split the two fields apart and encode them separately. This results in more blurring of the colors (although this is usually very subtle) and less efficient compression.

    The general rule: interlaced source -> interlaced MPEG2 for DVD; progressive source -> progressive MPEG2 for DVD.
    Quote Quote  
  6. does non-interlace = progressive ?
    Quote Quote  
  7. Originally Posted by bambam
    does non-interlace = progressive ?
    Yes.
    Quote Quote  
  8. I would answer that last question with "not necessarily".

    This is one of those situations where answering one question leads to many others. To understand the answers you have been given, and the reasons why, you really need to round out your knowledge base.

    I would start with reading some of the definitions and guides available on this site, the answers are already there. The reason they are there is that questions like this get asked several hundred times a year.

    The answer you have not gotten yet is that you should leave interlaced for TV playback and de-interlace for PC playback, generally. A few minutes of reading will tell you why.
    Quote Quote  
  9. Member thecoalman's Avatar
    Join Date
    Feb 2004
    Location
    Pennsylvania
    Search PM
    Originally Posted by Nelson37

    The answer you have not gotten yet is that you should leave interlaced for TV playback and de-interlace for PC playback, generally. A few minutes of reading will tell you why.
    And just add to that good DVD playing software such as PowerDVD odes a great job of deinterlacing on the fly during playback negating the need to deintelace for computer playback.

    The only time I deinterlace video is for video that is going to be distributed on the web such as website. Many people are not going to be viewing your video through PowerDVD hence the reason to deintelace.
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!