[Libav-user] Fwd: Help, Transcoding video

[NDJORE BORIS]

Ok.
But I'm new in ffmpeg. can you tell me where the first encoder
is initialised in the transcodig.c example please?
Thank you a lot.

Regards


Le mer. 23 janv. 2019 à 23:28, Carl Eugen Hoyos <ceffmpeg at gmail.com> a
écrit :

> 2019-01-23 15:56 GMT+01:00, NDJORE BORIS <ndjoreboris at gmail.com>:
>
> > I want to encode two times my input video file while decoding it juste
> one
> > time.
> > I use doc/examples/transcoding.c
> > <
> https://ffmpeg.org/doxygen/trunk/doc_2examples_2transcoding_8c-example.html
> >
> > What I want to do is to decode and encode like the transcoding.c examples
> > does.
> > Then, when I finished the decoding and encoding loop (while(1)).
> > I want to call only the encoding function again in an other loop to
> encode
> > a second time without
> > decoding.
> > Ex:
> > First time :
> > while(1)
> > {
> >        if (there is a frame in the input file)
> >         {
> >               decode input video;
> >               encode output file;
> >               next streamindex;
> >          }
> >
> > }
> >
> > Second time :
> > while(1)
> > {       encode another outputfile;
> > }
> >
> > What I want to know, is if it's possible to do that (decode only one time
> > an input file in a whille loop and encode it two times).
> > If yes, can you tell me how to do it ?
>
> You can create a second encoder and call it with every decoded frame
> parallel to the first encode.
>
> If you want to encode sequentially this should also be possible but
> please calculate first if the memory requirements are acceptable
> for you - you need memory for all uncompressed frames, not
> compressed as they are on your harddisk.
>
> Carl Eugen
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