afaik, the only video-lib for Pd that renders into the patch is framestein (and afaik this is dead for several years) and this would be required for what you want to do.

So finally, it is possible wit framestein?

Claude Heiland-Allen wrote:

derek holzer wrote:

...

Can anyone recommend a Linux/Unix/OSX script for a "favorite tool" that could dynamically generate thumbnails?

ImageMagick provides 'convert':

convert -resize 160x120 image.jpg image-thumb.png

Excellent. Thanks. Maybe I'll cook something up with this for my next workshop.

d.

...

ImageMagick provides 'convert':

convert -resize 160x120 image.jpg image-thumb.png

Note that this preserves aspect ratio, which may or may not be what you want (I haven't worked out how to stretch an image to a precise size with convert yet, if someone knows then please tell me!).

You could also use Python's Image module (PIL) to do thumbnails from within Pd, however thumbnails from videos are a different issue, I guess.

for video, you could probably use pymedia to produce thumbnails.

http://pymedia.org/

or just use mplayer to render out a frame.

but, just fyi, you will probably want to use imagemagick's convert for resizing images for thumbnails. It has a few options for it's resampling algo, but I find the default one to be better than GD's or PIL. It's also much slower.

below is a python script for converting images. could be easily modified to use mplayer to render out a frame and resize it using convert.

-august.

from glob import glob import os import Image #PIL

def doConvert(w,h, item, folder, force = False ): path = folder + "/" + item # make a folder to hold all the thumbnails if ( os.path.exists(path) ): print item + " exists in folder: " + folder if (force): print "forcing convert for " + folder + "/" + item command = "convert " + item + " -resize " + str(w) + 'x' + str(h) + " " + folder + "/" + item print command os.system( command ) else: command = "convert " + item + " -resize " + str(w) + 'x' + str(h) + " " + folder + "/" + item print command os.system( command )

def doImage(item, force = False): image = Image.open(item) x,y = image.size msize =648.0 #864 ssize =162.0 #216

    mw,mh=10,10
    sw,sh=10,10

    if (x > y):
       sratio = x/ssize
    else :
       sratio = y/ssize
    sw = int( x/sratio )
    sh = int( y/sratio )
    doConvert(sw,sh,item, "thumbnails", force)

def getList(): return glob("*.jpg") + glob("*.JPG")

# go throught the current directory looking for jpegs and make thumnails for item in jpglist: doImage(item, force)