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|
#! /usr/local/python
# Print some info about a CMIF movie file
# Usage:
#
# Vinfo [-d] [-q] [-s] [file] ...
# Options:
#
# -d : print deltas between frames instead of frame times
# -q : quick: don't read the frames
# -s : don't print times (but do count frames and print the total)
# file ... : file(s) to inspect; default film.video
import sys
sys.path.append('/ufs/guido/src/video')
import VFile
import getopt
# Global options
short = 0
quick = 0
delta = 0
# Main program -- mostly command line parsing
def main():
global short, quick, delta
opts, args = getopt.getopt(sys.argv[1:], 'dqs')
for opt, arg in opts:
if opt == '-q':
quick = 1
elif opt == '-d':
delta = 1
elif opt == '-s':
short = 1
if not args:
args = ['film.video']
sts = 0
for filename in args:
if process(filename):
sts = 1
sys.exit(sts)
# Process one file
def process(filename):
try:
vin = VFile.VinFile().init(filename)
except IOError, msg:
sys.stderr.write(filename + ': I/O error: ' + `msg` + '\n')
return 1
except VFile.Error, msg:
sys.stderr.write(msg + '\n')
return 1
except EOFError:
sys.stderr.write(filename + ': EOF in video file\n')
return 1
print 'File: ', filename
print 'Version: ', vin.version
print 'Size: ', vin.width, 'x', vin.height
print 'Pack: ', vin.packfactor, '; chrom:', vin.chrompack
print 'Bits: ', vin.c0bits, vin.c1bits, vin.c2bits
print 'Format: ', vin.format
print 'Offset: ', vin.offset
if quick:
vin.close()
return
if not short:
if delta:
print 'Frame time deltas:',
else:
print 'Frame times:',
n = 0
t = 0
told = 0
datasize = 0
while 1:
try:
t, data, cdata = vin.getnextframe()
except EOFError:
break
datasize = datasize + len(data)
if cdata: datasize = datasize + len(cdata)
if not short:
if n%8 == 0:
sys.stdout.write('\n')
if delta:
sys.stdout.write('\t' + `t - told`)
told = t
else:
sys.stdout.write('\t' + `t`)
n = n+1
if not short: print
print 'Total', n, 'frames in', t*0.001, 'sec.',
if t: print '-- average', int(n*10000.0/t)*0.1, 'frames/sec',
print
print 'Total data', 0.1 * int(datasize / 102.4), 'Kbytes',
if t:
print '-- average',
print 0.1 * int(datasize / 0.1024 / t), 'Kbytes/sec',
print
vin.close()
# Don't forget to call the main program
main()
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