Depending on your original images, you might not want to use GIF as the
intermediate format. GIF has a maximum of 256 colors.
Nancy Johnston
George Vandenberghe wrote:
>
> I have had success with black and white images with the following
> method
>
> ./ncar.x (produces gmeta with gazillions of images)
>
> use ictrans to split the gmeta into the gazillions of separate images
>
> for each image
>
> ictrans -d xwd -res 640x480 im$count >xwd$count
>
> then for each xwd$count
>
> convert XWD:xwd.$count GIF:gif$count (increment count from its MAX down by -1)
>
> then
>
> dmconvert -v -f sgimv -d -pvideo,comp=jpeg `ls -t *gif` movie
>
> then on your o2
>
> movieplayer movie
>
> It is VERY IMPORTANT that the resolution be 640x480.. then the
> special JPEG boards on the O2 are used to uncompress the JPEG
> at 30 frames/second. Other resolutions are uncompresses
> by the cpu at 2-5 fps and jerkily and the screen response
> time gets rotten.. The 640x480 images play too smoothly
> for the eye to see on an O2.
>
> It helps to put an analog clock or time bar in each
> image to keep track of where you are in your
> animation.
>
> I'm doing this from memory so a few
> command options may be incorrect. I'll resend
> a complete response on Monday
>
> [ note also that "convert" command
> is ImageMajiik convert.. if you don't have
> it dmconvert can also do the conversion
> directly but it is MUCH MUCH slower. dmconvert segfaults
> when I try to animiate directly from xwd images.
> That is why I convert to gif.
>
> I have not had much luck with mpeg conversions. I also have
> not tried to deal with color.
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