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  1. I have some MP4 files that I would like to join together into one file without quality loss, is there a software that can do that?
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  2. Yes,My MP4Box GUI. Provided same codecs, resolution etc are used. Otherwise you need to re-encode, ie. (maybe not noticeable) quality loss.
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  3. Member Budman1's Avatar
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    Jul 2012
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    The files will have to be the SAME (resolution, bit rate, frame rate, etc.) or they will need to be recoded which means some loss. If they are the same I use FFMPEG's Concatenate feature and they play fine in most players.

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  4. The MP4 files have different resolution (720x480 and 1280x720), frames (24 and 25) and bitrate.
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  5. Member hech54's Avatar
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    Jul 2001
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    Yank in Europe
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    Originally Posted by Casterina View Post
    The MP4 files have different resolution (720x480 and 1280x720), frames (24 and 25) and bitrate.
    Then you will need to re-encode and lose quality.
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  6. Originally Posted by hech54 View Post
    Originally Posted by Casterina View Post
    The MP4 files have different resolution (720x480 and 1280x720), frames (24 and 25) and bitrate.
    Then you will need to re-encode and lose quality.
    Which software that can re-encode the best and not lose a lot of quality?
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