Video Player with Subtitles
Easily add subtitles to any video. Supports SRT, ASS, VTT files with full styling. No software installation needed.
Start Playing Now — It's FreeWhy Use OnlinePlayer for Subtitles?
Wide Format Support
We support all major subtitle formats: SRT, WebVTT, ASS, SSA, and more. No conversion needed.
Smart Synchronization
Audio out of sync? Adjust subtitle timing offset in real-time to match the video perfectly.
Full Styling
We render ASS/SSA subtitles with full styling support — colors, fonts, positioning, and animations.
Drag & Drop
Already watching a video? Just drag a subtitle file onto the player to load it instantly.
Auto-Detection
If your video has embedded subtitles (like in MKV files), we detect and list them automatically.
Encoding Support
Say goodbye to garbled text. We support multiple character encodings to ensure subtitles display correctly in any language.
Subtitle Support Comparison
| Feature | OnlinePlayer | VLC | Default Browser |
|---|---|---|---|
| SRT/VTT Support | ✅ | ✅ | VTT Only |
| ASS/SSA Styling | ✅ | ✅ | ❌ |
| Timing Adjustment | ✅ | ✅ | ❌ |
| Embedded Subtitles | ✅ | ✅ | ❌ |
| Encoding Fixes | ✅ | ✅ | ❌ |
| No Installation | ✅ | ❌ | ✅ |
| Works offline | ✅ | ✅ | ✅ |
Subtitle & Video Support
We handle the technical details so you can just watch:
Subtitle Formats
SRT, VTT, ASS, SSA, SUB, SMI
Video Formats
MP4, MKV, AVI, WMV, FLV, MOV, WebM
Features
Time Offset, Size, Color, Font Style, Background
How to Add Subtitles to Video
Open Video
Open OnlinePlayer and load your video file. It plays immediately in your browser.
Load Subtitles
Click the 'CC' button or simply drag and drop your subtitle file onto the video player.
Adjust & Enjoy
If needed, use the settings to adjust sync or appearance. Sit back and enjoy your movie.
Subtitle FAQ
How do I fix out-of-sync subtitles?
In the player control bar, click the subtitle settings icon. You can adjust the delay in seconds (positive or negative) until it matches.
My subtitles look like strange symbols.
This is usually an encoding issue. Try changing the text encoding from UTF-8 to your local language encoding in the settings.
Can I customize the font size?
Yes! For SRT and VTT subtitles, you can customize size, color, and background opacity in the settings menu.
Do you support animated subtitles?
Yes, we fully support Advanced Substation Alpha (ASS) format, which allows for complex positioning and karaoke effects.
Can I search for subtitles online?
Currently, you need to provide your own subtitle file. We are working on integrating with subtitle search engines soon.