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我正在尝试使用 FFMPY 将多个图像转换为视频，这似乎很好。但是，视频已显示，现在我想更改图像在视频中出现的持续时间。一种方法来自 FFMPEG 本身。

ff = ffmpy.FFmpeg(
    executable='/Users/username/Documents/GitHub/python_audio/ffmpeg',
    inputs={
        '/Users/username/Documents/GitHub/python_audio/images/img0.jpeg': ["-framerate=60"],
        '/Users/username/Documents/GitHub/python_audio/images/img1.jpeg': ["-framerate=60"]
    },
    outputs={'movie.mov': ["-filter:a", "atempo=0.5"]}
)
ff.run()

它不起作用。现在看来 ffmpy 与 FFMPEG 的常用命令有点不同。有人知道如何更改图像的长度/持续时间吗？

提前致谢。

编辑：另一个尝试：

ff = ffmpy.FFmpeg(
    executable='/Users/username/Documents/GitHub/python_audio/ffmpeg',
    inputs={
        '/Users/username/Documents/GitHub/python_audio/images/img0.jpeg': ["-framerate 25, -loop 1, -t 10"],
        '/Users/username/Documents/GitHub/python_audio/images/img1.jpeg': ["-framerate 25, -loop 1, -t 10"]
    },
    outputs={'movie.mov': ["-filter:a", "atempo=0.5"]}
)
ff.run()

但回应是

ffmpeg version 4.3.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Unrecognized option 'framerate 25, -loop 1, -t 10'.
Error splitting the argument list: Option not found
Traceback (most recent call last):
  File "pyff.py", line 16, in <module>
    ff.run()
  File "/Users/username/Library/Python/2.7/lib/python/site-packages/ffmpy.py", line 105, in run
    raise FFRuntimeError(self.cmd, self.process.returncode, out[0], out[1])
ffmpy.FFRuntimeError: `/Users/username/Documents/GitHub/python_audio/ffmpeg "-framerate 25, -loop 1, -t 10" -i /Users/username/Documents/GitHub/python_audio/images/img1.jpeg "-framerate 25, -loop 1, -t 10" -i /Users/username/Documents/GitHub/python_audio/images/img0.jpeg -filter:a atempo=0.5 movie.mov` exited with status 1

STDOUT:


STDERR:
4

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