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- #! /usr/bin/env python
-
- # Compress an rgb or grey video file to jpeg format
-
-
- # Usage:
- #
- # Vmkjpeg [infile [outfile]]
-
-
- # Options:
- #
- # infile : input file (default film.video)
- # outfile : output file (default out.video)
-
-
- import sys
- import jpeg
- sys.path.append('/ufs/guido/src/video')
- import VFile
-
-
- # Main program -- mostly command line parsing
-
- def main():
- args = sys.argv[1:]
- if len(args) < 1:
- args.append('film.video')
- if len(args) < 2:
- args.append('out.video')
- if len(args) > 2:
- sys.stderr.write('usage: Vmkjpeg [infile [outfile]]\n')
- sys.exit(2)
- sts = process(args[0], args[1])
- sys.exit(sts)
-
-
- # Copy one file to another
-
- def process(infilename, outfilename):
- try:
- vin = VFile.BasicVinFile(infilename)
- except IOError, msg:
- sys.stderr.write(infilename + ': I/O error: ' + `msg` + '\n')
- return 1
- except VFile.Error, msg:
- sys.stderr.write(msg + '\n')
- return 1
- except EOFError:
- sys.stderr.write(infilename + ': EOF in video file\n')
- return 1
-
- try:
- vout = VFile.BasicVoutFile(outfilename)
- except IOError, msg:
- sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
- return 1
-
- info = vin.getinfo()
- if info[0] == 'rgb':
- width, height = vin.getsize()
- bytes = 4
- format = 'jpeg'
- elif info[0] == 'grey':
- width, height = vin.getsize()
- pf = vin.packfactor
- width, height = width / pf, height / pf
- bytes = 1
- format = 'jpeggrey'
- else:
- sys.stderr.write('Vmkjpeg: input not in rgb or grey format\n')
- return 1
- info = (format,) + info[1:]
- vout.setinfo(info)
- vout.writeheader()
- n = 0
- try:
- while 1:
- t, data, cdata = vin.getnextframe()
- n = n + 1
- sys.stderr.write('Frame ' + `n` + '...')
- data = jpeg.compress(data, width, height, bytes)
- vout.writeframe(t, data, None)
- sys.stderr.write('\n')
- except EOFError:
- pass
- return 0
-
-
- # Don't forget to call the main program
-
- main()
-