如果或更多，则两个

Question

我想在添加更多值的值时读取setting.ini文件。

config.ini
[settings]
videofile = video.avi
codesplit = -vn
outputfile = audio.mp3
codec = copy

输出

['ffmpeg.exe', '-i', 'video.avi', '-vn', 'copy', 'audio.mp3']

f您使值“ codessplit”和“ codec”为空，代码将效果很好。示例：将视频AVI文件转换为视频MP4

[settings]
videofile = video.avi
codesplit = 
outputfile = videoaudio.mp4
codec = 

输出

['ffmpeg.exe', '-i', 'video.avi', 'videoaudio.mp4']

如果您想用一个值为空的“代码”或“复制”，则代码不起作用。

[settings]
videofile = video.avi
codesplit = 
outputfile = videoaudio.mp4
codec = copy

or

[settings]
videofile = video.avi
codesplit = -vn
outputfile = audio.mp3
codec = 

输出['ffmpeg.exe', '-i', 'video.avi', 'videoaudio.mp4']

这就是我想要的

['ffmpeg.exe', '-i', 'video.avi', 'copy', 'videoaudio.mp4']

['ffmpeg.exe', '-i', 'video.avi', '-vn', 'audio.mp3']

Full代码

import subprocess
import configparser


config = configparser.ConfigParser(allow_no_value=True)
config.read(r"Settings.ini")
videofile = config.get("settings", "videofile")
outputfile = config.get("settings", "outputfile")
codesplit = config.get("settings", "codesplit", fallback=None)
codec = config.get("settings", "codec", fallback=None)

ffmpeg_path = r"ffmpeg.exe"

if codesplit and codec :
    command = [
        f"{ffmpeg_path}",
        "-i",
        (videofile),
        (codesplit),
        (codec),
        (outputfile),
    ]
else:
    command = [
        f"{ffmpeg_path}",
        "-i",
        (videofile),
        (outputfile),
    ]

process = subprocess.Popen(
    command,
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE,
    text=True,
    bufsize=1,
    universal_newlines=True,
)
process.communicate()

print(command)

tried添加一个语句“和”

IF（codesplit）和（编解码）：

没有发生的事情

比起拥有简单的

if

else

Answer 1

import subprocess
import configparser


config = configparser.ConfigParser(allow_no_value=True)
config.read(r"Settings.ini")
videofile = config.get("settings", "videofile")
outputfile = config.get("settings", "outputfile")
codesplit = config.get("settings", "codesplit", fallback=None)
codec = config.get("settings", "codec", fallback=None)

ffmpeg_path = r"ffmpeg.exe"
command = [ ffmpeg_path, "-i", videofile ]
if codesplit:
    command.append(codesplit)

if codec:
    command.append(codec)

command.append(outputfile)

# lines commented out for testing
#
# process = subprocess.Popen(
#     command,
#     stdout=subprocess.PIPE,
#     stderr=subprocess.PIPE,
#     text=True,
#     bufsize=1,
#     universal_newlines=True,
# )
# process.communicate()

print(command)

使用上面的Python脚本我jget从四个示例

config.ini

文件中产生以下结果：

C:\Users\test>python test.py
['ffmpeg.exe', '-i', 'video.avi', '-vn', 'copy', 'audio.mp3']

C:\Users\test>python test.py
['ffmpeg.exe', '-i', 'video.avi', 'videoaudio.mp4']

C:\Users\test>python test.py
['ffmpeg.exe', '-i', 'video.avi', 'copy', 'videoaudio.mp4']

C:\Users\test>python test.py
['ffmpeg.exe', '-i', 'video.avi', '-vn', 'audio.mp3']