[MPlayer-users] How to create a "neutral sequence" at the beginning of a video track ?

Dominik 'Rathann' Mierzejewski dominik at greysector.net
Fri Aug 7 19:13:54 CEST 2015

On Friday, 07 August 2015 at 19:09, Nick Koretsky wrote:
> On Fri, 7 Aug 2015 15:41:50 +0000 (UTC)
> André P. <csosog-at-yahoo.fr at ffmpeg.org> wrote:
> > Sorry for the mistakes ;(
> > @ Nick KoretskyThank you for your quick answer.
> > - I exclude the re-encoding the {original file} in order to create a
> > {neutral sequence} with the same caracteristics because the re-encoding
> > would be too time consuming.
> > - WouLd I be able to collect all the caracteristics of the {original
> > file} (and I am faR from that), I also exclude to create the {neutral
> > sequence} with these caracteristics because I have no control on the
> > {original files} (some come from emule, some from DDL).There aRE so many
> > differEnt formats/codecs that the probability that I miss the required
> > one is too high. 
> And that is exactly why i said that what you are asking for is impossible in
> a general case. There is only two ways to append something to video track -
> reencode or match source codec. There is no way around that.

You could have such sequence stored in a separate file and compressed with
a lossless codec and reencode it each time you need to append it to some new
video file, matching the file's codec parameters.

That might even be possible to automate and shouldn't take too much

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