'to_gif' raises IOError/OSError when no 'program' parameter is given about moviepy

[Zulko]

I am not sure I understand. If you have ffmpeg, you can do:

myclip.to_gif('animation.gif', fps=10, program='ffmpeg')

Doesn't this work ?

I have seen your other commits, I am not sure it is a good idea to have a global variable for the gif program. Most of the time, I use ImageMagick, but sometimes the result is not good, so I want to try with ffmpeg (they yield very different results).

[Zulko]

So does it work with the line I gave above ?

[Zulko]

So does it work with the line I gave above ?

[sergiobuj]

I was also getting something like:

/usr/local/lib/python2.7/dist-packages/moviepy/tools.pyc in subprocess_call(cmd, verbose, errorprint)
     23     verboseprint( "\nMoviePy Running:\n>>> "+ " ".join(cmd) )
     24 
---> 25     proc = sp.Popen(cmd, stderr = sp.PIPE)
     26 
     27     out, err = proc.communicate() # proc.wait()

OSError: [Errno 2] No such file or directory

But adding the program='ffmpeg' parameter to to_gif worked for me.

[Zulko]

@sergiobuj This error means that the program cannot detect ImageMagick. Did you install ImageMagick ?

[sergiobuj]

I didn't install ImageMagick, but the extra parameter worked.
Is 'to_gif' one of the advanced features? because I didn't install Pygame either.

[Zulko]

The default parameter for "program" is "ImageMagick", and it will only work if ImageMagick is installed on your computer. If you change it to ffmpeg you can make gifs using ffmpeg (but these are generally heavy and ugly).

Pygame is not needed for gifs, it is needed if you want to make previews of your gifs/videos before writing them to a file, it is especially useful if you use the IPython Notebook.

Thanks for the feedback, I will make more explicit error messages for the "couldn't find imagemagick" case.

[sergiobuj]

Got it, thanks!
I will install ImageMagick (and Pygame) because the gifs really look ugly.