ffmpeg feels like its taking a long time. I then look at my output file and i see it stops between 6 and 8mbs. A fully encoded file is about 14mb. Why does ffmpeg stop? My code locks up on StandardOutput.ReadToEnd();. I had to kill the process (after seeing it not move for more then 10 seconds when i see it update every second previously) then i get the results of stdout and err. stdout is “” stderr is below.
How do I execute the following shell command using the Python subprocess module?
How can I get the output of a process run using subprocess.call()? Passing a StringIO.StringIO object to stdout gives this error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py", line 444, in call return Popen(*popenargs, **kwargs).wait() File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py", line 588, in __init__ errread, errwrite) = self._get_handles(stdin, stdout, stderr) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py", … Read more
What is a good way to communicate between two separate Python runtimes? Thing’s I’ve tried:
I have a python script parse.py, which in the script open a file, say file1, and then do something maybe print out the total number of characters.
I am trying to use Sailfish, which takes multiple fastq files as arguments, in a ruffus pipeline. I execute Sailfish using the subprocess module in python, but <() in the subprocess call does not work even when I set shell=True.
I see a “pipe” character (|) used in a function call:
I want to run a command in pythong, using the subprocess module, and store the output in a variable. However, I do not want the command’s output to be printed to the terminal. For this code: def storels(): a = subprocess.Popen("ls",shell=True) storels() I get the directory listing in the terminal, instead of having it stored … Read more
I need to run the command date | grep -o -w '"+tz+"'' | wc -w using Python on my localhost. I am using subprocess module for the same and using the check_output method as I need to capture the output for the same.
I have a simple c++ program that I’m trying to execute through a python script. (I’m very new to writing scripts) and I’m having trouble reading output through the pipe. From what I’ve seen, it seems like readline() won’t work without EOF, but I want to be able to read in the middle of the program and have the script respond to whats being outputted. Instead of reading output, it just hangs
the python script: