Subtitle Edit 5.1 beta: AI review and subtitle tutorial

This tutorial covers subtitle editing features demonstrated in Subtitle Edit 5.1.0 beta 11. The presenter shows how to add and position a logo when generating video with burned-in subtitles, then selects subtitle effects such as fade-in and fade-out. With a video loaded, the walkthrough also covers cutting clips and re-encoding for subtitling, including H.264 and optional FFmpeg parameters.

The AI review section explains how to select an engine and model, edit the correction prompt and review selected subtitle lines. The available engine choices include llama.cpp, Ollama and an OpenAI-compatible option. This gives viewers a local LLM workflow for checking subtitle text; the OpenAI-compatible route asks for model details and an API key. Review results can flag spelling, grammar, punctuation and casing issues. The small sample returns no issues, and the presenter warns that larger files may take longer.

The walkthrough also covers forced aligners and expanded speech-to-text and text-to-speech choices. Aligner availability depends on the selected speech engine. The presenter reports inaccurate results from aligning imported transcripts through speech-to-text. Visual sync has a waveform, but the video preview stays blank in the demonstration while the older version displays it. The presenter also says plugins are absent from the beta being used.