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Forums Compression Techniques How to tell if m2v file is top first or bottom first

  • How to tell if m2v file is top first or bottom first

  • Jeff Paul

    June 30, 2007 at 7:08 pm

    I’ve got some m2v files that were encoded using Compressor. Is there a quick way to check if they were encoded with Top First or Bottom First? I want to double-check that they were encoded correctly, and if there’s a quick way to tell without having to burn some tests first, it would save me a whole lot of time.

    Thanks!
    -Jeff

  • Ben Waggoner

    July 2, 2007 at 12:22 am

    BitRate Viewer will tell what the file is flagged at.

    However, that won’t tell you if the file was flagged correctly in the first place. I generally wind up taking it into After Effects and dropping it onto a 60p timeline, and seeing which field order gives me correct motion.

    My compression blog: https://on10.net/blogs/benwagg/

    My compression class at Stanford: https://digitalmediaacademy.org/courses/video-compression-training.html

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