Covert to TS and back

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Covert to TS and back

Julien Dotsev
Why when I convert a video file to mpeg-ts and then convert it back to the
original one there is a file size increase? Is there a way to avoid that? I
want to be able to bring back the original file. Is it possible?

Julien
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Re: Covert to TS and back

Carl Eugen Hoyos-2


> Am 20.10.2019 um 23:36 schrieb Julien Dotsev <[hidden email]>:
>
> Why when I convert a video file to mpeg-ts and then convert it back to the
> original one there is a file size increase? Is there a way to avoid that?

Command line and complete, uncut console output missing.


> I want to be able to bring back the original file. Is it possible?

In general this is not possible but see above.

Carl Eugen
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Re: Covert to TS and back

Carl Zwanzig
In reply to this post by Julien Dotsev
On 10/20/2019 2:36 PM, Julien Dotsev wrote:
>  I want to be able to bring back the original file. Is it possible?

Why not just keep the original?  (Or, what's to be accomplished by the
double conversion?)

z!

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Re: Covert to TS and back

Rodney Baker-2
>
> Why not just keep the original?  (Or, what's to be accomplished by the
> double conversion?)
>

This was what I was thinking as well.
There is something intriguing about the odd idea of round-tripping in the
sense of non destructive manipulation of data.
At least in keeping the original, the data in transition would have a
target to hit.  I would think this key to restoration of the changed data.
Another option (in this round-tripping scenario) would be to record the
steps taken and then simply (?) reverse/retrace back again.
I'm not sure how practical such a thing is but I'm certainly curious about
the use cases as well.

-Rodney
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Re: Covert to TS and back

Carl Eugen Hoyos-2

Am 22.10.2019 um 20:13 schrieb Rodney Baker <[hidden email]>:

> There is something intriguing about the odd idea of round-tripping in the
> sense of non destructive manipulation of data.

You did not explain your use case but the general issue is that FFmpeg is a transcoding utility (with some additional features) but not a file archiving tool.

(Note that I regularly have the same discussion with people interested in archiving digital multimedia data.)

Carl Eugen
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