mirror of
https://github.com/KevinMidboe/spotify-downloader.git
synced 2025-10-29 18:00:15 +00:00
103 lines
3.0 KiB
Python
103 lines
3.0 KiB
Python
import subprocess
|
|
import os
|
|
from logzero import logger as log
|
|
|
|
|
|
"""What are the differences and similarities between ffmpeg, libav, and avconv?
|
|
https://stackoverflow.com/questions/9477115
|
|
|
|
ffmeg encoders high to lower quality
|
|
libopus > libvorbis >= libfdk_aac > aac > libmp3lame
|
|
|
|
libfdk_aac due to copyrights needs to be compiled by end user
|
|
on MacOS brew install ffmpeg --with-fdk-aac will do just that. Other OS?
|
|
https://trac.ffmpeg.org/wiki/Encode/AAC
|
|
"""
|
|
|
|
|
|
def song(input_song, output_song, folder, avconv=False, trim_silence=False):
|
|
""" Do the audio format conversion. """
|
|
if input_song == output_song:
|
|
return 0
|
|
convert = Converter(input_song, output_song, folder, trim_silence)
|
|
log.info("Converting {0} to {1}".format(input_song, output_song.split(".")[-1]))
|
|
if avconv:
|
|
exit_code = convert.with_avconv()
|
|
else:
|
|
exit_code = convert.with_ffmpeg()
|
|
return exit_code
|
|
|
|
|
|
class Converter:
|
|
def __init__(self, input_song, output_song, folder, trim_silence=False):
|
|
self.input_file = os.path.join(folder, input_song)
|
|
self.output_file = os.path.join(folder, output_song)
|
|
self.trim_silence = trim_silence
|
|
|
|
def with_avconv(self):
|
|
if log.level == 10:
|
|
level = "debug"
|
|
else:
|
|
level = "0"
|
|
|
|
command = [
|
|
"avconv",
|
|
"-loglevel",
|
|
level,
|
|
"-i",
|
|
self.input_file,
|
|
"-ab",
|
|
"192k",
|
|
self.output_file,
|
|
"-y",
|
|
]
|
|
|
|
if self.trim_silence:
|
|
log.warning("--trim-silence not supported with avconv")
|
|
|
|
log.debug(command)
|
|
return subprocess.call(command)
|
|
|
|
def with_ffmpeg(self):
|
|
ffmpeg_pre = "ffmpeg -y "
|
|
|
|
if not log.level == 10:
|
|
ffmpeg_pre += "-hide_banner -nostats -v panic "
|
|
|
|
_, input_ext = os.path.splitext(self.input_file)
|
|
_, output_ext = os.path.splitext(self.output_file)
|
|
|
|
ffmpeg_params = ""
|
|
|
|
if input_ext == ".m4a":
|
|
if output_ext == ".mp3":
|
|
ffmpeg_params = "-codec:v copy -codec:a libmp3lame -ar 44100 "
|
|
elif output_ext == ".webm":
|
|
ffmpeg_params = "-codec:a libopus -vbr on "
|
|
|
|
elif input_ext == ".webm":
|
|
if output_ext == ".mp3":
|
|
ffmpeg_params = "-codec:a libmp3lame -ar 44100 "
|
|
elif output_ext == ".m4a":
|
|
ffmpeg_params = "-cutoff 20000 -codec:a libfdk_aac -ar 44100 "
|
|
|
|
if output_ext == ".flac":
|
|
ffmpeg_params = "-codec:a flac -ar 44100 "
|
|
|
|
# add common params for any of the above combination
|
|
ffmpeg_params += "-b:a 192k -vn "
|
|
ffmpeg_pre += " -i"
|
|
|
|
if self.trim_silence:
|
|
ffmpeg_params += "-af silenceremove=start_periods=1 "
|
|
|
|
command = (
|
|
ffmpeg_pre.split()
|
|
+ [self.input_file]
|
|
+ ffmpeg_params.split()
|
|
+ [self.output_file]
|
|
)
|
|
|
|
log.debug(command)
|
|
return subprocess.call(command)
|