[MEncoder-users] Converting PNG files to MPEG-4

Pierre Sarrazin sarrazip at sympatico.ca
Sun Apr 17 23:55:59 CEST 2005

Dixit mvalle at cscs.ch (2005-04-17 05:32):
> > mencoder "mf://*.png" -mf w=800:h=600:fps=25:type=png -ovc lavc
> > -lavcopts vcodec=mpeg4 -oac copy -o output.avi
> mf: with PNF files failed for me when PNG used a Colormodel
> different from TrueColor.
> Do you have ImageMagick installed? look at the output of:
> identify -verbose your_image.png to check this.
> If this is the case use ImageMagick convert to move to a sane colormodel.

Thanks, this worked.  I used a command like this one to convert
each PNG file:

    convert in.png -type truecolor out.png

Then the original mencoder command line worked.

According to the 'identify' command, it's the 'Class' property of
the PNG files that changed from PseudoClass to DirectClass.

Pierre Sarrazin <sarrazip at sarrazip . com>

More information about the MEncoder-users mailing list