Hardcode Slovak subtitles into video

Burn-in (hardcoded) subtitles are permanently embedded in the video pixels and cannot be turned off. Soft subtitles (SRT/VTT) are separate files that viewers can toggle on/off. Burn-in is ideal for social media where caption support is inconsistent.

Yes! Sonix offers extensive styling options including font family, size, color, background color, opacity, and position (top, middle, bottom). Preview your style in real-time before rendering.

Sonix preserves your original video quality during the burn-in process. We use high-quality rendering to ensure subtitles look crisp and professional without degrading your footage.

Processing time depends on video length and resolution. A typical 10-minute 1080p video takes about 5-10 minutes to render. You'll receive an email notification when your video is ready.

Sonix exports burned-in videos as MP4 files with H.264 encoding—the most universally compatible video format. Your video will play on virtually any device or platform.

No. Once subtitles are burned in, they're permanent. We recommend thoroughly reviewing and editing your transcript in the Sonix editor before rendering. You can always create a new burn-in version if needed.

Yes. Upload your Slovak audio or video file, select Slovak as the language, and Sonix generates a transcript you can edit in the browser and export to formats like Word, PDF, SRT, and VTT.

The Slovak model is built for Slovak, so extended Czech passages may need manual correction in the editor. If a recording is mostly Czech, transcribing it as Czech usually gives better results.

Transcription is based on standard Slovak, so broadcast-style and formal speech transcribes most reliably. Strong Western or Eastern regional dialects may require more cleanup using the built-in editor.