HeyGen vs Linly-Dubbing

HeyGen creates videos from text, images, audio, and presentations or PDFs, and provides AI avatars. Its AI Studio lets users adjust generated motion elements, including text, color, timing, and layout. Avatar lip-sync and translation support more than 175 languages and dialects. The Free plan costs $0.00 per free and allows three videos a month, each up to one minute. Creator costs $29 a month and includes 600 credits, videos up to 30 minutes, and 1080p export; Pro costs $49 a month and includes 1,000 credits, videos up to 30 minutes, and 4K export. HeyGen is available on Android, iOS, web, and API. Team tools include comments, tagging, shared editing, workspace collaboration, and task management. Business plans connect with tools including n8n, Make, HubSpot, Zapier, and LMS platforms. Paid plans include live chat support; Enterprise adds priority support and customer success management. HeyGen is headquartered in Los Angeles, California.

Linly-Dubbing is an open-source tool for translating and dubbing videos into Chinese and other languages. It combines speech recognition and speaker recognition with translation options using OpenAI models, locally run Qwen, or Google Translate. Documented voice synthesis choices include Edge TTS, XTTS, CosyVoice, and GPT-SoVITS; voice cloning can generate speech resembling the original video's voice. Linly-Talker lip-sync technology aligns dubbed speech with the video. The tool can add subtitles and background music, adjust music volume, change playback speed, separate vocals from accompaniment, and download video and audio through yt-dlp. Setup instructions describe a local WebUI and use of Python 3.10, PyTorch 2.3.1, and CUDA 11.8 or 12.1, with Windows and Linux model-download instructions. A Colab script is also linked for online use. Installation requires configuring dependencies, downloading models, and setting environment variables, and may use external service credentials depending on configuration. The project is licensed under Apache License 2.0; its releases page lists no releases.