add oxposterframe, decode one frame more

oxposterframe

@@ -0,0 +1,66 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+# GPL 2010 <j@mailb.org>
+
+import os
+import sys
+from optparse import OptionParser
+import subprocess
+import tempfile
+
+import Image
+
+
+if __name__ == '__main__':
+    width = None
+    height = None
+    size = None
+    parser = OptionParser()
+    parser.add_option('-x', '--size', dest='size', help='scale image to size')
+    parser.add_option('-p', '--pos', dest='pos', help='frame position in seconds, float')
+    parser.add_option('-i', '--input', dest='input', help='video input')
+    parser.add_option('-o', '--output', dest='output', help='path to save frame to, jpg, png supported')
+    (opts, args) = parser.parse_args()
+    if None in (opts.input, opts.output, opts.pos):
+        parser.print_help()
+        sys.exit()
+
+    f, fname = tempfile.mkstemp(suffix='.png')
+    cmd = ['oxframe', '-i', opts.input, '-o', fname, '-p', opts.pos]
+    p = subprocess.Popen(cmd + ['-x', opts.size, ])
+    p.wait()
+    frame = Image.open(fname)
+    width = frame.size[0]
+    height = frame.size[1]
+    if height > width:
+        p = subprocess.Popen(cmd + ['-y', opts.size, ])
+        p.wait()
+        frame = Image.open(fname)
+        width = frame.size[0]
+        height = frame.size[1]
+
+    if opts.size:
+       size = opts.size
+    else:
+        size = min(width, height) 
+
+    if width > height:
+        width = int(int(opts.size) * (float(width) / height))
+        height = int(opts.size)
+        width = width - width % 2
+        ox = abs(height - width) / 2
+        oy = 0
+    else:
+        height = int(int(opts.size) * (float(height) / width))
+        width = int(opts.size)
+        height = height - height % 2
+        ox = 0
+        oy = abs(height - width) / 2
+
+    frame = frame.resize((width, height), Image.ANTIALIAS)
+
+    frame = frame.crop((ox, oy, int(opts.size) + ox, oy + int(opts.size)))
+    frame.save(opts.output)
+    if os.path.exists(fname):
+        os.unlink(fname)