您需要在print语句中添加括号，并将异常语法更改为except Exception as e：
import subprocess
import re
import math
from optparse import OptionParser
length_regexp = 'Duration: (\d{2}):(\d{2}):(\d{2})\.\d+,'
re_length = re.compile(length_regexp)
def main():
(filename, split_length) = parse_options()
if split_length <= 0:
print("Split length can't be 0")
raise SystemExit
output = subprocess.Popen("ffmpeg -i '"+filename+"' 2>&1 | grep 'Duration'",
stdout = subprocess.PIPE
).stdout.read()
print(output)
matches = re_length.search(output)
if matches:
video_length = int(matches.group(1)) * 3600 + \
int(matches.group(2)) * 60 + \
int(matches.group(3))
print("Video length in seconds: " + str(video_length))
else:
print("Can't determine video length.")
raise SystemExit
split_count = math.ceil(video_length/float(split_length))
if split_count == 1:
print("Video length is less then the target split length.")
raise SystemExit
split_cmd = "ffmpeg -i '"+filename+"' -vcodec copy "
for n in range(0, split_count):
split_str = ""
if n == 0:
split_start = 0
else:
split_start = split_length * n
split_str += " -ss "+str(split_start)+" -t "+str(split_length) + \
" '"+filename[:-4] + "-" + str(n) + "." + filename[-3:] + \
"'"
print("About to run: " + split_cmd + split_str)
output = subprocess.Popen(split_cmd+split_str, shell = True, stdout =
subprocess.PIPE).stdout.read()
def parse_options():
parser = OptionParser()
parser.add_option("-f", "--file",
dest = "filename",
help = "file to split, for example sample.avi",
type = "string",
action = "store"
)
parser.add_option("-s", "--split-size",
dest = "split_size",
help = "split or chunk size in seconds, for example 10",
type = "int",
action = "store"
)
(options, args) = parser.parse_args()
if options.filename and options.split_size:
return (options.filename, options.split_size)
else:
parser.print_help()
raise SystemExit
if __name__ == '__main__':
try:
main()
except Exception as e:
print("Exception occured running main():")
print(e)
在进行这些更改之后，脚本将可以正常运行，并且还可以得到进一步的改进。
更新版本应该与Python2和3兼容：
import re
import math
from optparse import OptionParser
length_regexp = 'Duration: (\d{2}):(\d{2}):(\d{2})\.\d+,'
re_length = re.compile(length_regexp)
from subprocess import check_call, PIPE, Popen
import shlex
def main():
filename, split_length = parse_options()
if split_length <= 0:
print("Split length can't be 0")
raise SystemExit
p1 = Popen(["ffmpeg", "-i", filename], stdout=PIPE, stderr=PIPE, universal_newlines=True)
output = Popen(["grep", 'Duration'], stdin=p1.stderr, stdout=PIPE, universal_newlines=True)
p1.stdout.close()
matches = re_length.search(output.stdout.read())
if matches:
video_length = int(matches.group(1)) * 3600 + \
int(matches.group(2)) * 60 + \
int(matches.group(3))
print("Video length in seconds: {}".format(video_length))
else:
print("Can't determine video length.")
raise SystemExit
split_count = math.ceil(video_length / split_length)
if split_count == 1:
print("Video length is less than the target split length.")
raise SystemExit
for n in range(split_count):
split_start = split_length * n
pth, ext = filename.rsplit(".", 1)
cmd = "ffmpeg -i {} -vcodec copy -strict -2 -ss {} -t {} {}-{}.{}".\
format(filename, split_start, split_length, pth, n, ext)
print("About to run: {}".format(cmd))
check_call(shlex.split(cmd), universal_newlines=True)
def parse_options():
parser = OptionParser()
parser.add_option("-f", "--file",
dest="filename",
help="file to split, for example sample.avi",
type="string",
action="store"
)
parser.add_option("-s", "--split-size",
dest="split_size",
help="split or chunk size in seconds, for example 10",
type="int",
action="store"
)
(options, args) = parser.parse_args()
if options.filename and options.split_size:
return options.filename, options.split_size
else:
parser.print_help()
raise SystemExit
if __name__ == '__main__':
try:
main()
except Exception as e:
print(e)
python3 ffmp.py -f /home/padraic/horses/ams.mp4- Padraic Cunningham