Powered by OpenAI Whisper
Add Subtitles to MP4
No credit card required. Completely free.
Quickly add subtitles to MP4 videos for clear and accessible content. 98.5% accuracy.
How to transcribe or generate subtitles in minutes?
With just a few clicks, you can have your audio / video captioned.
Use our online editor to review the transcript / subtitle generated without installing a software.
- Step 1
Upload
Upload your audio / video or drop your YouTube video link that you want to transcribe.
- Step 2
Transcribe
Simply click the transcribe button. Our AI will automatically generate an accurate transcript / subtitle for your audio / video.
- Step 3
Edit
Review transcript / subtitle with our online editor.
- Step 4
Download
Export transcript / subtitle in your preferred format (.srt / .txt / .docx / .csv).
Previously disappointed by other subtitle and transcription tools?
What makes Subtitlewhisper different
Subtitlewhisper is powered by OpenAI Whisper that makes Subtitlewhisper more accurate than most of the paid transcription services and existing softwares (pyTranscriber, Aegisub, SpeechTexter, etc.).
Whisper is an automatic speech recognition system with improved recognition of unique accents, background noise and technical jargon. It is trained on '680,000 hours of multilingual supervised data'. You can learn more by reading the paper.
We make it simple for you to use Whisper to transcribe and add subtitles without hassles.
Features
Generate Transcript/Subtitle for Free
Free to use. No credit card required.
Support Input Format of all Types
Support YouTube link and uploading files including MP4, WAV, MP3, etc.
Easy-to-use Editing Interface
Easily edit timestamp and transcription text.
Auto Save your Progress
All the progress of your project will be saved automatically.
Security and Confidentiality
All files are protected and remain private all the time.
Pricing
Free | Subscription | |
---|---|---|
Auto Subtitles | ||
Max. Length Per Video | 30 mins | 3 hours |
Max. File Size | 500 MB | 5 GB |
Video Export (Subtitle Embedding) | ||
Remove watermark | - | |
Quality | Max. 720p | Max. 4k |
Subtitle Editor | ||
Subtitle & Timestamp Editing | ||
Subtitle Translation | ||
Multi-language Subtitle Editing | ||
Download subtitle files | - | |
Price | US$0 / mo | From US$18.00 / mo |
Try Now for Free | Compare Plans |
Save Hundreds of Hours with a Plan
Have questions? Please contact hello@subtitlewhisper.com for support.
Basic
For individuals with basic transcription or subtitling needs.
USD 9(SAVE 50%)
Per month, billed yearly
Go BasicEverything in Free, and:
- 720 minutes per year of transcription / subtitles
- Remove watermark
- Download subtitles
- Export in .srt,.txt, .docx, .csv format
- Full HD 1080p / 4k export quality
- Max. 3 hours export length per audio / video
- Max. 5GB upload size limit
Pro
For professionals and small businesses with more recurring subtitling or transcription needs.
USD 18(SAVE 40%)
Per month, billed yearly
Go ProEverything in Basic, and:
- 2160 minutes per year of transcription / subtitles (3x of Basic)
Ultra
For professionals and businesses with extensive subtitling or transcription needs.
USD 40(SAVE 30%)
Per month, billed yearly
Go UltraEverything in Pro, and:
- 5760 minutes per year of transcription / subtitles (8x of Basic, 2.7x of Pro)
- Additional minutes of transcription / subtitles available for purchase upon request
- Priority customer support
- Dedicated account manager
Business
For organisations and enterprises with custom needs.
Custom Pricing
Book DemoWhatsApp our Sales ManagerEverything in Ultra, and:
- Custom usage limits
- Custom internal system integration
- Custom feature development
- Multiple workspaces
- User accounts for team
Supported Languages
Best Software to Add Subtitles to MP4 Videos powered by AI in 2025
Understanding How to Add Subtitles to MP4 Files: A Comprehensive Guide
In the dynamic world of digital content creation, adding subtitles to your MP4 files has become increasingly essential. Whether you're a filmmaker, a content creator on YouTube, or a business professional preparing a presentation, adding subtitles can enhance accessibility, expand your audience reach, and improve viewer engagement. This guide will walk you through everything you need to know about adding subtitles to MP4 files, ensuring your content is not only inclusive but also SEO-friendly.
Why Subtitles Matter
Before delving into the process of adding subtitles to MP4 files, it's crucial to understand their importance. Subtitles serve multiple purposes:
1. Accessibility: Subtitles make your content accessible to the hearing impaired, ensuring everyone has the opportunity to engage with your content.
2. Language Barrier: They help bridge the language gap, allowing non-native speakers to understand the content better.
3. SEO Benefits: Search engines can index text from subtitles, improving your content's searchability and ranking.
4. Viewer Engagement: Subtitles can keep viewers engaged, especially in noisy environments where audio clarity is compromised.
Steps to Add Subtitles to MP4 Files
Adding subtitles to an MP4 file is a relatively straightforward process but requires careful attention to detail to ensure accuracy and synchronization. Here’s how you can do it:
Step 1: Create or Obtain Subtitle Files
There are two main types of subtitles: manually created subtitles and auto-generated subtitles.
- Manual Subtitles: You can create these using text editors or specialized software like Aegisub. This method gives you complete control over the timing and accuracy.
- Auto-generated Subtitles: Many online services and subtitling tools can automatically generate subtitles. While convenient, they may require subsequent editing for accuracy.
Step 2: Choose the Right Subtitling Software
There are several tools available that can help you add subtitles to your MP4 files. Some popular options include:
- HandBrake: A free, open-source tool that allows you to embed subtitles into your MP4 files.
- VLC Media Player: Besides being a media player, VLC can also be used to add subtitles and view them during playback.
- Adobe Premiere Pro: A professional video editing software that offers robust subtitling features.
- AI Subtitling Tools: These SaaS platforms leverage artificial intelligence to streamline the subtitling process, offering quick turnaround times and accuracy.
Step 3: Synchronize Subtitles with Video
Proper synchronization is crucial for ensuring that subtitles appear at the right moment in your video. Most subtitling software offers timeline features that allow you to adjust the timing of your subtitles. Pay close attention to the start and end times of each subtitle to ensure they align with the dialogue or audio cues.
Step 4: Export the Final Video
Once your subtitles are perfectly synchronized, it's time to export your final video. Depending on the software, you may have the option to permanently embed the subtitles (hard subtitles) or include them as a separate file (soft subtitles). Hard subtitles are part of the video file and cannot be turned off, while soft subtitles can be toggled on or off by the viewer.
Best Practices for Subtitling
To ensure your subtitles enhance rather than detract from your content, follow these best practices:
- Keep It Simple: Use clear and concise language. Avoid cluttering the screen with too much text.
- Timing is Key: Ensure subtitles appear on screen long enough to be read comfortably but not so long that they lag behind the audio.
- Consistency: Maintain consistent font style, size, and color throughout your video to ensure readability.
- Quality Check: Always review your subtitles for spelling and grammatical errors, as these can distract from the content and reduce credibility.
Conclusion
Adding subtitles to MP4 files is an indispensable skill for modern content creators. Not only do they make your content more accessible and engaging, but they also offer significant SEO benefits that can help your content reach a wider audience. By following this guide, you can ensure that your subtitles are high-quality, synchronized, and effective in enhancing your digital media projects. Remember, the goal is to create an inclusive experience that resonates with all viewers, regardless of their hearing ability or language proficiency.