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How can you tell when something is re-encoded?

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Not really, unless it has some info in MediaInfo that gives it away, such as a program with very few options or a low bit rate and file size. Most small file size encodes are not made from the DVD/BD/web source, but from someone else's encode. Nowadays, unless a video is from a subbed source or raw JP video, they normally don't even include watermarks much anymore, but do include them in the MediaInfo as names for video/audio/subtitle tracks

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It is easy to tell if a movie or TV show has been encoded.  Here is a guide for non-encoded Movies/TV.

 

1080p  Movies Live Action are about 18 to 45 GB in size.

1080p  Anime Movies are about 10  to 25 GB in size.

 

1080p  TV both Live Action or Anime are about 2 to 8 GB in size.

 

So if a movie is under 10 GB than it has been encoded but how many time has that video file been encoded, 5, 10 or 20 times in the pass.

Edited by sgfrisbee2015

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As mentioned, size is usually a good indicator, but this is confusing since you still will see low-bitrate encodes coming from REMUXs, or high bit-rate re-encodes from bloated 1080p encodes.

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File size is definitely NOT an actual good way to determine if something is re-encoded. As the previous user stated, you can have a video that was re-encoded with a high bitrate, that could potentially be higher than the original source, which could produce unnecessary bloat in file size. Increasing the bitrate on any existing encode is pointless, since you will lose quality, rather than gain it. It would be a lot easier to identify if encoding programs actually keep track of how many times a video is encoded and it would read that value and add one for each pass to add to the newly re-encoded file. That likely won't happen, though, just like people likely won't come clean on whether or not a video they post has been re-encoded or not.

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The guide I provided is still valid for remux movies/tv off of blu-ray disc.  Remux movies from blu-ray disc have a bite rate 25 to 40 Mbps or higher for 4K movies.  If you have

low bit rate remux (under 20 Mbps) than it is not a remux.  I have an old movie "The Last Starfighter" made in 1984 that they made a 25th anniversary edition blu-ray disc and

its bit rate is at 35 Mbps.

 

This post is about encodes that are re-encode and there is no way to tell how many time it has been re-encoded.  You may be able to tell by video quality because every time the

same file is re-encoded the video quality will drop even if the bit rate is at 30 Mbps.

 

Edited by sgfrisbee2015

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