NOTE: There are far better tools available for the task of speeding up silent sections. I highly recommend that you rather use unsilence or my simple front-end to it, which is part of the PPVID set of tools. For this reason, I am archiving this repository.
STTSilence, short for "Speed through the silence", is utility that speeds up the silent parts in a video. This is especially useful for lectures and slidecasts.
This module depends on MoviePy. However, due to some issues with the current stable release of MoviePy, STTSilence uses the development version of MoviePy. At the time of writing, this is version 2.0.0.dev2.
NOTE: Given the changes in version 2 of MoviePy, the current stable release of MoviePy is incompatible with STTSilence. Therefore, you must install MoviePy from Github. Use the following command:
pip install git+https://github.com/Zulko/moviepy.git
Once you have installed MoviePy, one may install STTSilence from Github. Use the following command:
pip install git+ https://github.com/sjvrensburg/STTS_package.git
STTSilence does not require any additional dependencies beyond that required by MoviePy.
The main function provided by this module is stts. This function is responsible for speeding up the silent parts of a video.
from stts import stts
in_file = "video_with_annoying_pauses.mp4"
out_file = "video_with_fewer_annoying_pauses.mp4"
duration = 0.5 # Minimum duration of silence to speed up.
threshold = -35 # This will classify anything below 35dB as "silence".
speed = 3 # Make silent sections 3 times faster.
# This will produce the file `out_file`.
stts(in_file, out_file, duration, threshold, speed)It is also useful to create a script that you can run from the command line.