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我试图编写一个脚本,可以从Web服务器下载文件到内存,将其直接管道到ffmpeg的ffprobe模块,并返回文件的详细信息由ffprobe决定。这是我目前有:管道到ffmpeg失败 - “管道::没有足够的空间”
import requests
from io import BytesIO
from subprocess import Popen, PIPE
def get_file(url):
r = requests.get(url)
file = BytesIO(r.content).seek(0)
return file
def get_info(file):
p = Popen(["ffprobe", "-i", "-"], stdin=file, stdout=PIPE, stderr=PIPE)
output = p.communicate()[1].decode("utf8")
return output
下面是一个文件装载的open()输出比较:
ffprobe version N-66931-gbbd8c85 Copyright (c) 2007-2014 the FFmpeg developers
built on Oct 17 2014 01:05:12 with gcc 4.9.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 54. 10.100/54. 10.100
libavcodec 56. 8.100/56. 8.100
libavformat 56. 9.100/56. 9.100
libavdevice 56. 1.100/56. 1.100
libavfilter 5. 1.106/5. 1.106
libswscale 3. 1.101/3. 1.101
libswresample 1. 1.100/1. 1.100
libpostproc 53. 3.100/53. 3.100
Input #0, mp3, from 'pipe:':
Metadata:
title : Test File
Duration: N/A, start: 0.000000, bitrate: 320 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
Metadata:
title : Test File
...和文件,get_file()下载:
ffprobe version N-66931-gbbd8c85 Copyright (c) 2007-2014 the FFmpeg developers
built on Oct 17 2014 01:05:12 with gcc 4.9.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 54. 10.100/54. 10.100
libavcodec 56. 8.100/56. 8.100
libavformat 56. 9.100/56. 9.100
libavdevice 56. 1.100/56. 1.100
libavfilter 5. 1.106/5. 1.106
libswscale 3. 1.101/3. 1.101
libswresample 1. 1.100/1. 1.100
libpostproc 53. 3.100/53. 3.100
pipe:: Not enough space
起初,这看起来像内存不足,但我正在使用的文件很小(< 10MB),所以我不认为这是问题所在。显然,虽然,我做错了什么...任何人都可以给我任何建议,为什么管道在这种情况下会失败?
你得到这个失败在“只是”命令行上运行它?把它发送到ffmpeg怎么样? – rogerdpack
对不起?这些输出是通过从python到ffprobe的管道文件生成的。无论我尝试使用哪个音频文件,都会发生“空间不足”警告。如果我下载了相同的音频文件,将会成功处理,然后运行ffprobe,但我想避免写入磁盘。 –
你有没有想过这个? –