matplotlib.animation：Windows下的脚本作品，并在Linux下适用于动画短片，但无限期地挂起更长的动画？

问题描述

下面是相关code片断：

Here is the relevant code snippet:

ani = animation.FuncAnimation(fig, animate, outputFiles, blit=True, interval=25)

print "Starting to write animation file..."
# Set up formatting for the movie files
Writer = animation.writers['ffmpeg']

fps = 2
animationFileName = "animation"
if fps <= 2:
    animationFileName = animationFileName + "_slow.mp4"
if fps < 120:
    animationFileName = animationFileName + ".mp4"
else:
    animationFileName = animationFileName + "_fast.mp4"

writer = Writer(fps=fps, metadata=dict(artist='Alien'), bitrate=1800)
ani.save(os.path.join(graphicsOutputDirectory, animationFileName), writer=writer)
print "Finished writing animation file..."

当运行在Linux中（Debian的喘息）的剧本，我看到下面的输出：

When running the script in Linux (Debian Wheezy), I see the following output:

>>> python make_animation.py
Starting to run animation file...

在Windows中，脚本运行就好了。我已经确信，我不是愚蠢的错误，如不正确使用的文件名。动画短片似乎运行我的GNU / Linux机器和更长更严重的就好似乎无限期挂起...

In Windows, the script runs just fine. I have made sure that I am not making silly errors like using incorrect file names. Short animations seem to run just fine on my GNU/Linux machine and longer more serious ones seem to hang indefinitely...

什么可能这里的问题是什么？我想，一个相关的细节，我应该提到的是，我使用的是virtualenvironment运行matplotlib的先进的最新版本。

What might the issue here be? I suppose a relevant detail I should mention is that I am using a virtualenvironment to run an up-to-date version of matplotlib.

推荐答案

Ubuntu和Debian现在去$ P $出货pcated FFMPEG版本。这可能是问题。尝试通过从FFmpeg的网站上最近的一个替换你的/ usr / bin中的二进制文件的ffmpeg

Ubuntu and Debian now ship with deprecated FFMPEG versions. That may be the issue. Try replacing the ffmpeg binary in your /usr/bin by a recent one from the FFMPEG website.

另一个可能的问题涉及Python 3中，其中有子较小的缓冲区，如果发送的ffmpeg太多的信息返回到Python将永远挂起。你对Python 3的？

Another possible issue concerns Python 3, in which subprocess has a smaller buffer and will hang forever if ffmpeg sends too much informations back to Python. Are you on Python 3 ?

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