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Update for gif creation using ffmpeg

asked 2013-08-22 13:15:42 +0200

jazz gravatar image

updated 2015-01-14 14:36:39 +0200

FrédéricC gravatar image

As I tried to run Animated plots -- Sage Reference Manual v5.11: 2D Graphics and there the example

a = animate([sin(x + float(k)) for k in srange(0,2*pi,0.7)],
               xmin=0, xmax=2*pi, figsize=[2,1])
dir = tmp_dir()
#a.ffmpeg(savefile=dir + 'new.mpg')       # optional -- ffmpeg
#a.ffmpeg(savefile=dir + 'new.avi')       # optional -- ffmpeg
a.ffmpeg(savefile=dir + 'new.gif')       # optional -- ffmpeg
#a.ffmpeg(savefile=dir + 'new.mpg', show_path=True) # optional -- ffmpeg

there appeared an error on the gif creation. Thus using the option verbose = true. There the error was explained to appear in
/Applications/ in line 570. There the line is

ffmpeg_options += ' -pix_fmt rgb24 -loop_output %s ' % iterations

where the option -loop_output should be changed to -loop as I did since ffmpeg states "This option is deprecated, use -loop". Then the creation of a gif file worked with my version of ffmpeg: 1.2.1, using the ffmpeg command but the file is still of minor quality compared to e.g. mp4.

So perhaps somebody of the staff team can change the file for future versions. I know that it should be done by a ticket but as a newbee I'm not familiar in making up a ticket. Thanks

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answered 2013-08-22 13:21:11 +0200

ppurka gravatar image

Thanks for the report. This is now ticket 15081.

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Asked: 2013-08-22 13:15:42 +0200

Seen: 383 times

Last updated: Aug 22 '13