Question

我想在python脚本中运行此命令

cmd = 'ffmpeg -ss ' + start_time + ' -i remove_takeoff.mp4 -filter_complex "[0]trim=0,setpts=PTS-STARTPTS[b];[b][0]overlay=shortest=1" -shortest -c:a trimmed_takeoff.mp4'

我正在使用以下代码段

import subprocess
import shlex

cmd = # the command
suprocess.call(shlex.split(cmd))

我遇到以下错误

Trailing options were found on the commandline.

发生上述错误是因为shlex.split命令将零件的双引号转换为单引号。如何避免这种情况的发生。谁能建议我解决这个问题的方法。

检查下面的完整错误跟踪。

ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 4.8.2 (GCC) 20140120 (Red Hat 4.8.2-15)
  configuration: --prefix=/home/vkv/anaconda3 
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Trailing options were found on the commandline.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'remove_takeoff.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.67.100
  Duration: 00:00:14.00, start: 0.000000, bitrate: 15883 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 15881 kb/s, 20 fps, 20 tbr, 10240 tbn, 40 tbc (default)
    Metadata:
      handler_name    : VideoHandler
Filter overlay has an unconnected output

带有动作子进程的ffmpeg命令

0 个答案: