format for ffmpeg arguments to pass on to other program

• tartube

  71 1,854 6.4 Python

  A GUI front-end for youtube-dl, partly based on youtube-dl-gui and written in Python 3 / Gtk 3

im using a program Tartube to download audio from youtube. My objective is to download the audio in required format and speed up the audio 1.5x using ffmpeg integrated into the program. what i have been doing till now is downloading the audio and speeding up separately using ffmpeg ffmpeg -i input.mp3 -af atempo=1.5 output.mp3 but the program can do this automatically for me. Where i am lacking is finding the correct arguments to fed into the program that will fetch the desired result. for eg i have tried ffmpeg -af atempo=1.5 etc but they are all inappropriate argument format for it. Can you help me by guiding what the correct format should be? here is the github question which hasnt been answered yet :link Thanks

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