http://imagej.273.s1.nabble.com/FFmpeg-plugin-question-tp5021858p5021870.html
> Thanks;
>
> I do not plan to do much work on this as I am not a programmer, I just
> research possible existing solutions. Sometimes one can make such a plugin
> export in a different format by just changing the name of the codec, since
> it is ffmpeg that does the conversion. My java programming skills is
> limited to changing existing code once I understand how it works, not
> writing anything complex from scratch.
>
> So far I have found three plugins / libraries capable of exporting movies
> via ffmpeg from ImageJ, but none of them work correctly for H.264. Most
> work fine with MPEG4 but I have not yet found any that produces H.264
> correctly. So today I convert on the command line. From that I see that
> H.264 gives the best quality video for my data, with MPEG4 second best.
> MPEG2 and MPEG1 gives inferior quality; all when comparing at the same
> bitrate.
>
> Looking at the source code at the link you provided, I see that the codec
> is auto-determined by the library from the chosen file extension. The
> default is .mpg which gives a mpeg1video codec. So I tried to just change
> the output file extension to .mp4, and then I get a video file with an
> mpeg4 codec, which is much better. Unfortunately changing to .mkv did not
> result in any H.264 codec (which is usually the default for this container)
> but an mpeg4 codec too. Anyway, going from mpeg1 to mpeg4 is a big
> improvement, and the simple way to do this (just changing the output file
> extension) was not obvious to me until I saw the source code.
>
> Stein
>
> -----Original Message-----
> From: ImageJ Interest Group <
[hidden email]> On Behalf Of Curtis
> Rueden
> Sent: 1. mars 2019 21:55
> To:
[hidden email]
> Subject: Re: FFmpeg plugin question
>
> Hi Stein,
>
> The code for the FFMPEG update site can be found here:
>
https://github.com/scifio/scifio-javacv/tree/ffmpeg>
> Development moved on from there a lot in that repository. If I recall
> recorrectly, Johannes's goal was to implement a SCIFIO Format plugin based
> on JavaCV, instead of using FFMPEG native libraries. But it never reached a
> releasable state.
>
> The native FFMPEG libraries were built in a pretty crazy way by making
> system calls to configure and make via Java (!), which you can see from the
> source at that tag. I would not recommend trying to hack on the code from
> that point, but rather from the master branch, which leans on the javacv
> library for the FFMPEG native interface.
>
> Happy to advise further if you decide to seriously work on this. Although
> you may want to post on forum.image.sc in the Development category rather
> than on this mailing list, in that case.
>
> Regards,
> Curtis
>
> --
> Curtis Rueden
> LOCI software architect -
https://loci.wisc.edu/software> ImageJ2 lead, Fiji maintainer -
https://imagej.net/User:Rueden Have you
> tried the Image.sc Forum?
https://forum.image.sc/>
>
>
> On Fri, Mar 1, 2019 at 12:53 PM Stein Rørvik <
[hidden email]>
> wrote:
>
> > The Fiji update site for FFMPEG links to
> >
http://fiji.sc/~schindelin/ffmpeg-plugins/> > This plugin works as advertised.
> >
> > But where can I find the source code of this ImageJ plugin
> (FFMPEG_IO.jar)?
> > What I would like to do is to is to see if it can be modified to
> > support modern codecs like H.264
> >
> > Under
> >
http://fiji.sc/~schindelin/ffmpeg-plugins/lib/> > we find the library files for the respective platforms, but they are a
> > bit outdated (2013).
> > Where can I find newer versions of the native libraries (ffmpeg.dll
> > for
> > Windows) ?
> >
> > Stein
> >
> > --
> > ImageJ mailing list:
http://imagej.nih.gov/ij/list.html> >
>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>