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Third-Party Notices

ViralBurst uses the following third-party software. This notice is provided

for attribution and license-compliance purposes.

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Bundled/installed automatically by ViralBurst

### ffmpeg / ffprobe

• License: GNU General Public License (GPL) v2 or later, or LGPL depending

on build configuration. The commonly-used "full" builds (including the

ones ViralBurst's installers fetch — via apt on Linux, via the

Gyan.FFmpeg winget package on Windows) are GPL-licensed because they

include libx264/libx265.

• Used as: an external command-line program, invoked as a separate

process — never linked into ViralBurst's own code.

• Source: https://ffmpeg.org/ | https://github.com/GyanD/codexffmpeg
• ViralBurst does not modify ffmpeg or bundle a pre-built copy inside its

installer; it has the user's own system install it via their package

manager.

### NVIDIA CUDA Libraries (cuBLAS, cuDNN)

• License: Proprietary — NVIDIA's own End User License Agreement (EULA),

not open source.

• Used for: optional GPU-accelerated transcription. Only installed if

the user selects a GPU device; otherwise never downloaded.

• Source / EULA: https://docs.nvidia.com/cuda/eula/index.html
• Installed via pip (nvidia-cublas-cu12, nvidia-cudnn-cu12), fetched

live from PyPI by the user's own machine — not bundled inside the

installer.

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Python packages (installed via pip, all permissive licenses)

| Package | License |

|---|---|

| faster-whisper | MIT |

| ctranslate2 (faster-whisper's inference engine) | MIT |

| yt-dlp | Unlicense (public domain) |

| opencv-contrib-python | Apache License 2.0 |

| numpy | BSD 3-Clause |

| Python (language + standard library) | Python Software Foundation License |

Full license texts for these packages are included in their respective

PyPI distributions and can be viewed via pip show <package> or on each

project's repository.

Whisper model weights

• License: MIT (OpenAI's Whisper model weights, as redistributed via

Hugging Face for use with faster-whisper/CTranslate2)

• Downloaded automatically on first use of transcription; not bundled with

the installer.

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Regarding YouTube downloads

ViralBurst's "paste a YouTube URL" input feature uses yt-dlp to fetch

video content on the user's behalf. This is subject to YouTube's own

Terms of Service, which restrict downloading content outside YouTube's

own provided mechanisms. Users are responsible for ensuring their own use

complies with the terms of whatever platform a URL is fetched from, and

with applicable copyright law for any content they process.