speedup

[Beemaxx]

Steps to reproduce

from pydub import AudioSegment
from pydub.effects import speedup

audio = AudioSegment.from_mp3(song.mp3)
new_file = speedup(audio,1.5,150)

Expected behavior

Tell us what should happen

Export a new file with 1.5 speed without changing the pitch

Actual behavior

Tell us what happens instead

The script is running, producing no output.

Your System configuration

• Python version: 3.6.9
• Pydub version: pydub-0.24.1
• ffmpeg or avlib?: ffmpeg
• ffmpeg/avlib version: 7:3.4.8-0ubuntu0.2

Is there an audio file you can include to help us reproduce?

You can include the audio file in this issue - just put it in a zip file and drag/drop the zip file into the github issue.

[wolfred24]

I have the same issue, no audio file output:

format = file_path[-3:]
sound = AudioSegment.from_file(file_path, format=format)
# for semitones in np.linspace(-1, 1, 21):
print(f"Trnasposing multimedia file {semitones} semitones")
semitones = int(semitones) *.083
speedup(sound, 1 + semitones)
sound.export(f"multimedia/{output_filename}", format=format)

[MeldwithAI]

Hey, it is working. Just add a line to export the new audio.

from pydub import AudioSegment
from pydub.effects import speedup

audio = AudioSegment.from_mp3(song.mp3)
new_file = speedup(audio,1.5,150)
new_file.export("file.mp3", format="mp3")