Python 视频到j2k转换的脚本不工作

我正在尝试将一个2k prores文件转换为j2c图像序列，以便将它们包装在mxf文件中。我试图绕过中间dpx或tiff转换。 但由于我有限的编程知识，我没有取得成功。你能告诉我我的代码有什么问题吗

import subprocess as sp

import subprocess as sp

import sys

import numpy


FFMPEG = "ffmpeg"

IMAGEMAGICK = "convert"

COLOUR_MATRIX = "0.4124564,0.3575761,0.1804375,0.2126729,0.7151522,0.0721750,0.0193339,0.1191920,0.9503041"

infile = sys.argv[1]
fps = sys.argv[2]
outfile = ('0'.zfill(8))


to_dpx = [FFMPEG,'-i',infile,'-f','image2pipe','-pix_fmt','rgb24','-c:v','dpx','-r',fps,'-']
to_j2k = [IMAGEMAGICK,'-','-alpha','off','-depth','12','-gamma','0.454545','-recolor',COLOUR_MATRIX,'-evaluate','multiply','0.9166',str(outfile)+'.j2c']

pipe = sp.Popen(to_dpx,stdout = sp.PIPE, bufsize = 10**8)


while(pipe.pull() is NONE):
raw_image = pipe.stdout.read(2048*872*3)
image = numpy.fromstring(raw_image,dtype = 'uint8')
image = image.reshape((2048,872,3))
pipe = sp.Popen(to_j2k,stdin = sp.PIPE,stderr = sp.pipe)
outfile = int(outfile) + 1

错误报告： python报告：

$python AurOchs_dc_compiler.py Sample2Kprores.mov 24
Traceback (most recent call last):
File "AurOchs_dc_compiler.py", line 17, in <module>
pipe = sp.Popen(to_dpx,stdout = sp.PIPE, bufsize = 100**8)
File "/usr/lib/python2.7/subprocess.py", line 739, in __init__
self.stdout = os.fdopen(c2pread, 'rb', bufsize)
OverflowError: signed integer is greater than maximum

---

您是否尝试过降低bufsize？缓冲区大小10**8给出了与sp import sys import numpy ffmpeg=ffmpeg IMAGEMAGICK=convert COLOUR_MATRIX=0.4124564,0.3575761,0.1804375,0.2126729,0.7151522,0.0721750,0.0193339,0.1191920,0.9503041 inflee=sys.argv[1]相同的错误fps=sys.argv[2]outfile='0'。zfill8 to_dpx=[FFMPEG'，i'，infle'，f'，'image2pipe'，'-pix_fmt'，'rgb24'，'-c:v'，'dpx'，'-r'，strfps'，-']to_j2k=[IMAGEMAGICK'，-'，'-alpha'，off'，'depth'，'12'，'gamma'，'0.454545'，'recotor'，color_MATRIX'，evaluate'，evaluate'，'multiply'，strfps'，strfps'，to"to.[IMAGEMAGICK'，douck'，spuble'，spuble'，sp=stx'，dpu=stx'，sp，bufsize=10**8，而pipe.poll为N

Stream mapping:
Stream #0:0 -> #0:0 (prores (native) -> dpx (native))
Press [q] to stop, [?] for help
av_interleaved_write_frame(): Broken pipe
frame= 1 fps=0.0 q=-1.0 Lsize= 5234kB time=00:00:00.04 bitrate=1028964.3kbits/s