FFmpeg not making videos unique after re-encode

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FFmpeg not making videos unique after re-encode

Daulet Sanatov
Is it possible to make video Unique by encoding? Because if i'm doing the
same encoding of one video, it's completely same inside, for example
Premiere is not working by this way.
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Re: FFmpeg not making videos unique after re-encode

Paul B Mahol
On 3/27/20, Daulet Sanatov <[hidden email]> wrote:
> Is it possible to make video Unique by encoding? Because if i'm doing the
> same encoding of one video, it's completely same inside, for example
> Premiere is not working by this way.

Not comprehensible.

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Re: FFmpeg not making videos unique after re-encode

Daulet Sanatov
In case you rendering the same project in premiere pro 2 times (the raw
code of output file in one place have differences, which makes raw code not
totally same). When rendering 2 times same project in FFmpeg, 2 output
files have Totally Same Raw Code.

On Fri, 27 Mar 2020 at 16:27, Paul B Mahol <[hidden email]> wrote:

> On 3/27/20, Daulet Sanatov <[hidden email]> wrote:
> > Is it possible to make video Unique by encoding? Because if i'm doing the
> > same encoding of one video, it's completely same inside, for example
> > Premiere is not working by this way.
>
> Not comprehensible.
>
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> > https://ffmpeg.org/mailman/listinfo/ffmpeg-user
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> > [hidden email] with subject "unsubscribe".
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Re: FFmpeg not making videos unique after re-encode

kumowoon1025
Hi,

> In case you rendering the same project in premiere pro 2 times (the raw
> code of output file in one place have differences, which makes raw code not
> totally same). When rendering 2 times same project in FFmpeg, 2 output
> files have Totally Same Raw Code.

I didn’t know this happened, I thought tags about the encoded time etc were added but apparently not. Same build ffmpeg, same parameters, same metadata, software encoder, and I get bit identical output as well (at least for simple files).

AME almost definitely adds encoded time at least, plus whatever id it adds to associate it with the bin or project. If they were encoded by cpu only (specifying 10+ bpc on a machine with a not-so-great GPU is one way to do this) with the same parameters, I think the result would be the same once you sanitize the output of metadata.

Though with AME I don’t know how to ensure the same encoding parameters… Since not all of them are available for me to specify I assume at least some of them are managed by the program.

Regards,
Ted Park

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