Question

我正在编写一个maya python脚本，将场景批量渲染为jpgs，然后使用ffmpeg将它们转换为mov。目前，该脚本将一串命令保存为bat文件，该文件工作正常，但我更喜欢从maya运行cmd.exe并执行命令列表而不先创建该bat。

我一直在阅读＆＃34; subprocess.popen（）＆＃34;但是我无法弄清楚如何让它遍历每一行，运行该命令，然后在完成时移动到下一个，即：

1）运行maya render.exe＆amp;将场景另存为jpegs

2）ffmpeg jpgs to mov

我缩短了目录，但基本上是这样：

`C:\PROGRA~1\Autodesk\Maya2015\bin\Render.exe -r hw2 -s 100 -e 200 -of jpg -fnc 7 -x 1920 -y 1080 -rd 
"C:\RENDER" 
"C:\SCENE.ma" ffmpeg -y -r 25 -start_number 0100 -i C:\SCENE_%%04d.jpg C:\SCENE.mov

我怎么能这样做？

谢谢！

Answer 1

first_process = subprocess.Popen(r'RenderCommand', stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
first_out,first_err = first_process.communicate()
first_exicode = first_process.returncode
print(first_out)
if str(first_exicode) != '0':
    print(first_err)

second_process = subprocess.Popen(r'SecondCommand', stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
second_out,second_err = second_process.communicate()
second_exicode = second_process.returncode
print(second_out)
if str(second_exicode) != '0':
    print(second_err)

third_process = subprocess.Popen(r'ConvertCommand', stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
third_out,third_err = third_process.communicate()
third_exicode = third_process.returncode
print(third_out)
if str(third_exicode) != '0':
    print(third_err)

重要提示：

在执行每个Popen（）期间，Maya的GUI将被冻结。这可能非常不方便，特别是如果要渲染很多帧。

我建议您将主要脚本中的渲染和转换调用分开以避免这种情况。

你可以这样做：

在您的主脚本中（您将调用Popen()：

subprocess.Popen(r'mayapy.exe R:\paul\Trash\render_and_convert.py 50 100 150', False)

此命令不会冻结Maya的GUI。您可以将主脚本中的参数传递给render_and_convert.py（文件路径，开始/结束帧等等）

render_and_convert.py：

import sys
import subprocess
import maya.standalone as std
std.initialize(name='python')
import maya.cmds as cmds
import maya.mel as mel

# store the arguments in variables
first_argument  = sys.argv[1] # =50
second_argument = sys.argv[2] # =100
third_argument  = sys.argv[3] # =150

first_process = subprocess.Popen(r'RenderCommand ' + first_argument + ' ' + second_argument,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
first_out,first_err = first_process.communicate()
first_exicode = first_process.returncode
print(first_out)
if str(first_exicode) != '0':
    print(first_err)

second_process = subprocess.Popen(r'SecondCommandWithoutArgs', stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
second_out,second_err = second_process.communicate()
second_exicode = second_process.returncode
print(second_out)
if str(second_exicode) != '0':
    print(second_err)

third_process = subprocess.Popen(r'ConvertCommand ' + third_argument,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True )
third_out,third_err = third_process.communicate()
third_exicode = third_process.returncode
print(third_out)
if str(third_exicode) != '0':
    print(third_err)

在Python

1 个答案: