Help : Preserve meta data

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Help : Preserve meta data

NDJORE BORIS
Hello all,

Can someone tells me which option I can add among my configure options to
preserve metadata during transcoding? In command line I know that the
option is map_metadata but I'm using libav
in my project.

This is my configure options :
 CONFIGURE_COMMAND
            env LD_PRELOAD=${ALGOLIB_DIR}/libalgolib.so
<SOURCE_DIR>/configure
            --prefix=<BINARY_DIR>
            --extra-cflags=-I<BINARY_DIR>/include
            --extra-ldflags=-L<BINARY_DIR>/lib
            --extra-libs=-lalgolib\ -lpthread
            --enable-gpl
            --enable-nonfree
            --enable-libfdk-aac
            --disable-doc
            --enable-pthreads
            --disable-programs
            --enable-shared
            --enable-static
            --enable-runtime-cpudetect

Regards
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Re: Help : Preserve meta data

DopeLabs
maybe this will help?

https://libav.org/avconv.html#Metadata

> On Aug 6, 2019, at 2:30 01AM, Rockland <[hidden email]> wrote:
>
> Hello all,
>
> Can someone tells me which option I can add among my configure options to
> preserve metadata during transcoding? In command line I know that the
> option is map_metadata but I'm using libav
> in my project.
>
> This is my configure options :
> CONFIGURE_COMMAND
>            env LD_PRELOAD=${ALGOLIB_DIR}/libalgolib.so
> <SOURCE_DIR>/configure
>            --prefix=<BINARY_DIR>
>            --extra-cflags=-I<BINARY_DIR>/include
>            --extra-ldflags=-L<BINARY_DIR>/lib
>            --extra-libs=-lalgolib\ -lpthread
>            --enable-gpl
>            --enable-nonfree
>            --enable-libfdk-aac
>            --disable-doc
>            --enable-pthreads
>            --disable-programs
>            --enable-shared
>            --enable-static
>            --enable-runtime-cpudetect
>
> Regards
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".

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Re: Help : Preserve meta data

Moritz Barsnick
On Tue, Aug 06, 2019 at 03:31:25 -0700, DopeLabs wrote:
> maybe this will help?
>
> https://libav.org/avconv.html#Metadata

a) That's the command line tool of a different project. ;-)
b) Rockland wrote that s/he wishes to *preserve*, not dump. And with
libav, I assume, s/he meant using the libraries in a SW project.

> > On Aug 6, 2019, at 2:30 01AM, Rockland <[hidden email]> wrote:
> > Can someone tells me which option I can add among my configure options to
> > preserve metadata during transcoding? In command line I know that the
> > option is map_metadata but I'm using libav in my project.

Rockland,
you make need to check how ffmpeg (the command line tool) does it, by
linking the demuxer's metadata to the muxer. The libraries support
extracting and adding metadata by default, no special options.

Cheers,
Moritz
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Re: Help : Preserve meta data

NDJORE BORIS
Le mar. 6 août 2019 à 16:19, Moritz Barsnick <[hidden email]> a écrit :

> On Tue, Aug 06, 2019 at 03:31:25 -0700, DopeLabs wrote:
> > maybe this will help?
> >
> > https://libav.org/avconv.html#Metadata
>
> a) That's the command line tool of a different project. ;-)
> b) Rockland wrote that s/he wishes to *preserve*, not dump. And with
> libav, I assume, s/he meant using the libraries in a SW project.
>
> > > On Aug 6, 2019, at 2:30 01AM, Rockland <[hidden email]> wrote:
> > > Can someone tells me which option I can add among my configure options
> to
> > > preserve metadata during transcoding? In command line I know that the
> > > option is map_metadata but I'm using libav in my project.
>
> Rockland,
> you make need to check how ffmpeg (the command line tool) does it, by
> linking the demuxer's metadata to the muxer. The libraries support
> extracting and adding metadata by default, no special options.
>
> Cheers,
> Moritz
> _________________________


Le mar. 6 août 2019 à 16:19, Moritz Barsnick <[hidden email]> a écrit :

> On Tue, Aug 06, 2019 at 03:31:25 -0700, DopeLabs wrote:
> > maybe this will help?
> >
> > https://libav.org/avconv.html#Metadata
>
> >a) That's the command line tool of a different project. ;-)
> >b) Rockland wrote that s/he wishes to *preserve*, not dump. And with
> >libav, I assume, s/he meant using the libraries in a SW project.
>


Of course, Mortiz

>

>Rockland,
> >you make need to check how ffmpeg (the command line tool) does it, by
> >linking the demuxer's metadata to the muxer. The libraries support
> >extracting and adding metadata by default, no special options.
>
> Ok. Thank you for your help


> >Cheers,
> >Moritz





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