Get the height and width of an uncompressed SWF.

size.py

#!/usr/bin/python
import array

f = open('uncompressed_test_adx30.swf', 'r')

input = f.read(8)

chars = [ord(ch) for ch in input]
nbits = chars[0] >> 3

rect = array.array('H', chars)
rect[0] = (rect[0] & 0x07)

address,length = rect.buffer_info()

converted = ""
for i in xrange(0,length):
        for j in xrange(0,8):
                converted += "1" if (rect[i] & 0x80) > 0 else "0"
                rect[i] = rect[i] << 1

bits = converted[5:]

dims = array.array('L', [0,0,0,0]);

for x in xrange(0,4):
        trimlen = nbits if len(bits) > nbits else len(bits)
        dest = bits[:trimlen]

        # pad the rightside of the number with 0-bits for each bit missing.
        # this makes the byte contain 16 bits instead of len(bits)
        if trimlen != nbits:
                dest += '0' * (nbits - len(bits))

        bits = bits[trimlen:]

        conv = 0;
        for y in xrange(0, len(dest)):
                conv = (conv << 1) + (1 if dest[y] == '1' else 0)
        dims[x] = conv / (20 if x < 3 else 19)

print "0 0 %d %d" % (dims[1] - dims[0], dims[3] - dims[2])