Re: octave-forge video package

[PhilipNienhuis]

Christian Scholz wrote
> Hi everyone,
> 
> I had some problems building the video package on my system using the 
> code provided on the website.
> After help from #octave I got it to work with the current svn and the 
> following changes applied:
> 
> --- configure.ac        (revision 11765)
> +++ configure.ac        (working copy)
> @@ -22,7 +22,7 @@
> 
>   AC_CHECK_LIB([avformat], [av_write_frame], [],
>                [AC_MSG_ERROR([$PACKAGE_NAME requires libavformat from 
> FFmpeg])])
> -AC_CHECK_LIB([avcodec], [av_malloc], [],
> +AC_CHECK_LIB([avutil], [av_malloc], [],
>                [AC_MSG_ERROR([$PACKAGE_NAME requires libavcodec from 
> FFmpeg])])
>   AC_CHECK_LIB([swscale], [sws_scale], [],
>                [AC_MSG_ERROR([$PACKAGE_NAME requires libswscale from 
> FFmpeg])])
> 
> 
> because av_malloc is part of lavutil on  my system. Don't know if that 
> counts as a bug, but I wanted to contribute that.
> 
> Also I'm really interessted in expanding the package, however I'm not 
> familier with the octave source.
> What I'm trying to do is to expand the aviread function in order to read 
> multiple frames at once
> (specified by an index vector, so that it works like its matlab 
> counterpart).
> 
> Is there someone working on the package? Any hints on how to get 
> familiar with the octave types and
> classes, apart from reading through the whole source?
> 
> Best wishes,
> Christian

What may be of help is the patches Nitzan made to get a collection of OF
packages working, resp. compiled, under MinGW; the video package is among
those:

http://octave.1599824.n4.nabble.com/My-patches-for-octaveforge-pkgs-Mingw-build-td4644174.html

A welcome extension would be a getframe() function (that grabs a screen
window, to be added to a video file later on).

I'd be very glad if the video package could be made to work smoothly again.

Philip




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