ffmpeg 使用说明
查看使用说明:ffmpeg -h
。
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| ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
-ab: -ab bitrate audio bitrate (please use -b:a) -y: overwrite output files
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转换命令如下:
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| ffmpeg -i xxx.flac -ab 320k xxx.mp3 -y'
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这次我们用到的主要是 -ab
命令,用来指定音频转换的比特率,常见的有: 192K, 320K 等。
遍历文件夹中的所有音频文件, 将 flac 转为 mp3 或 m4a
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| import os import subprocess
path = '~/music/FLAC/'
str = 'ffmpeg -i "{}" -ab 320k "{}" -y'
for parent, dirnames, filenames in os.walk(path): for filename in filenames: old_dir = os.path.join(parent, filename) if old_dir[-4:] == 'flac': new_dir = old_dir.replace('.flac', '.mp3') new_dir = old_dir.replace('.flac', '.m4a') str_cmd = str.format(old_dir, new_dir) print(str_cmd)
p = subprocess.Popen(str_cmd, shell=True, stdout=subprocess.PIPE) for line in iter(p.stdout.readline, b''): print(line.strip().decode('gbk'))
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删除原有的 flac 文件
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| import os import subprocess
path = '~/music/FLAC/'
for parent, dirnames, filenames in os.walk(path): for filename in filenames: old_dir = os.path.join(parent, filename)
if old_dir[-4:] == 'flac': print(old_dir) os.remove(old_dir)
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