SilenceCut

• SilenceCut is a simple tool to remove silence from video files.
• It's a simple wrapper around FFmpeg.
• It's written in Python and uses the ffmpeg-python library.
• It's a command line tool.

Prerequisites

• Python 3.x
• FFmpeg

Installation

macOS (using Homebrew)

brew install python3
brew install ffmpeg

Ubuntu/Debian

sudo apt update
sudo apt install python3 python3-pip ffmpeg

Windows

1. Install Python 3.
2. Install FFmpeg.
   • You may download it directly from here.
   • Then add it to your system PATH with this guide.

Install Python dependencies

pip install ffmpeg-python

Usage

python3 silencecut.py -i '<path_to_input_file>' -o '<path_to_output_file>'

Example

python3 silencecut.py -i ~/Desktop/input.mp4 -o ~/Desktop/output.mp4 --video_codec libx264 --video_bitrate 8M --video_preset medium --video_profile high --audio_codec aac --audio_bitrate 128k --audio_sample_rate 48000 --silence_level 30 --silence_duration 0.5

Options

-i or --input : Path to the input video file. (Required)

-o or --output : Path to the output video file. (Required)

-sl or --silence_level : Silence level in dB. (Optional, default: 30)

-sd or --silence_duration : Silence duration in seconds. (Optional, default: 0.5)

-vc or --video_codec : Video codec. (Optional, default: libx264)

-vb or --video_bitrate : Video bitrate. (Optional, default: 8m)

-vp or --video_preset : Video preset. (Optional, default: medium)

-vpr or --video_profile : Video profile. (Optional, default: high)

-ac or --audio_codec : Audio codec. (Optional, default: aac)

-ab or --audio_bitrate : Audio bitrate. (Optional, default: 128k)

-asr or --audio_sample_rate : Audio sample rate. (Optional, default: 48000)

Recommended Values for YouTube Videos

1. Video Codec: libx264
2. Video Bitrate: Depending on the resolution and frame rate, YouTube recommends:
   • 1080p at 30fps: 8 Mbps
   • 1080p at 60fps: 12 Mbps
   • 1440p at 30fps: 16 Mbps
   • 1440p at 60fps: 24 Mbps
   • 2160p at 30fps: 35-45 Mbps
   • 2160p at 60fps: 53-68 Mbps
3. Video Preset: medium (for a balance between encoding speed and quality)
4. Video Profile: high
5. Audio Codec: aac
6. Audio Bitrate: 128 kbps or higher (e.g., 192 kbps or 256 kbps for better quality)
7. Audio Sample Rate: 48 kHz

Example Values for 1080p at 30fps

• Video Bitrate: 8M
• Audio Bitrate: 192k
• Silence Level: 40 (depending on the noise level in the video, adjust as needed)
• Silence Duration: 0.5 (to quickly cut out short silent parts)

Error Handling

If you encounter issues, check the following:

1. FFmpeg Not Found: Ensure FFmpeg is installed and added to your system PATH.
2. Permission Denied: Ensure you have permission to read the input file and write to the output file's location.
3. Invalid Input: Ensure the input file path and format are correct.

Contributing

1. Fork the repository.
2. Create a new branch (git checkout -b feature-branch).
3. Make your changes.
4. Commit your changes (git commit -am 'Add new feature').
5. Push to the branch (git push origin feature-branch).
6. Create a new Pull Request.

License

This project is licensed under the MIT License. See the LICENSE file for details.