How many time can I work on a single mp4 video file before the quality degrades?
This is really a two part question so please bear with me since I'm not an expert on these things.
A couple of years ago, a friend of mine downloaded a 10 minute MP4 video from YouTube and gave it to me on a flash drive. I then used Windows Movie Maker (not the best program but its what I have) to brighten the video a little bit and then save the file in HD which is 1080p. I then converted the new HD video using RealPlayer converter so I can play it on my iPod/iPhone. After all was done, I deleted the original video that my friend gave me because since I did "my version" of that video, I didn't think I needed the original anymore
It wasn't until recently that I noticed that, in the middle of the video, were a couple of seconds that repeat three times. Now I want to use this video on Movie Maker to edit out those a couple of seconds, save it in HD, and convert it using Real Player converter. I've read that reusing a video file many times will eventually degrade the quality of the video so:
My first question is: Will "redoing" all this a third time further degrade the video?
and
My second question and this is somewhat unrelated: Will copying a video to a flash drive or copying to another folder degrade the video?
I would greatly appreciate the help.
Each time you edit and save the video you lose quality… Saving the video to a flash drive or copying to folder does nothing to video…
A digital video file is a sequence of numbers. If the numbers are copied correctly you will have an exact copy of the original file. Making copies of a digital file will not cause any degradation of the file - unlike analog video tapes where each successive copy lost some information from the video signal until, several copies later, it was unusable.
During the editing of the file you may introduce artefacts (corruptions of the original number sequence) that become visible during playback of the video. This is due to using second rate software such as Movie Maker and/or RealPlayer.
You can copy the sequence of numbers that comprise a digital video file anywhere (any folder on any drive) as many times as you like with no loss of quality.
Note: YouTube only provides a streaming service and downloading is explicitly forbidden by the terms of service you agree to abide by when you use the site…
See section 9:
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