Add Subtitles To Your M4V For Free Online

Add Subtitles to M4V in Three Steps

01
Sign Up and Upload Your Video
Sign up for Descript, then start a new project. Upload your M4V video by dragging and dropping it into the project window. Descript will automatically begin transcribing your video, making it easy to add subtitles.
02
Export Subtitles from Transcription
Once transcription is complete, click on "Underlord," type "Subtitles" into the search bar, and select "Export Subtitles." This will generate a subtitle file that you can easily add to your M4V video, ensuring your content is accessible and engaging for all viewers.
03
Choose Subtitle Format and Verify M4V Extension
Under the 'Subtitles' tab, select your desired subtitle format. Ensure the exported file name ends with the correct M4V extension to maintain compatibility. This step is crucial for seamless playback and proper subtitle integration in your final video.

Add Subtitles to M4V Videos Effortlessly

Fast, accurate subtitles in 22+ languages
Descript offers fast, accurate subtitles in 22+ languages, making it easy to add subtitles to your M4V files. Enhance accessibility and reach a global audience effortlessly. Whether you're creating educational content or marketing videos, Descript ensures your message is clear and understood by everyone.
Always auto-synced captions
Descript's always auto-synced captions ensure your M4V videos are accessible and engaging. As you edit, captions stay perfectly aligned with your audio, saving you time and effort. This feature guarantees that your audience never misses a word, enhancing the viewing experience seamlessly.
Generate subtitle files with speaker labels & time codes
Enhance your M4V videos with Descript's subtitle generation feature. Automatically create subtitle files complete with speaker labels and time codes, ensuring clarity and accessibility. Perfect for making your content more engaging and easier to follow, whether for training, presentations, or entertainment.

More than a Subtitle Adder

Descript is an AI-powered audio and video editing tool that lets you edit podcasts and videos like a doc.

Captions & subtitles
Effortlessly add subtitles to M4V files with Descript's Captions & Subtitles feature, enhancing accessibility and viewer engagement.
Transcription
Effortlessly transcribe your M4V files with Descript, making it simple to add accurate subtitles to your videos.
Multi-track editor
Descript's multi-track editor allows you to seamlessly add subtitles to M4V files, ensuring precise synchronization and professional quality.
Collaboration
Effortlessly collaborate with your team to add accurate subtitles to M4V files, ensuring seamless and efficient video editing.

Don’t just take our word for it

With a 4.6-out-of-5-star rating and a bunch of distinctions on G2, Descript’s users have declared it an industry standard in the video and podcasting world.

2025

Best Software

Video Editing

Text to Speech

Screen and Video Capture

“With Descript I'll be able to at least double my content output since editing is taking one-quarter the time it used to.”

Donna B.

“With Descript we can create videos for our YouTube channel and our LinkedIn page much faster and with high quality.”

Balázs N.

“Descript has made cleaning up and creating my educational videos into professional presentations [possible] without needing extensive technical computer skills.”

Barbara C.

“Descript makes recording and editing audio and video a breeze. It's advanced features have streamlined my workflows, saving me a lot of time usually spent editing.”

Roderick F.

“The collaborative tools streamline teamwork, allowing my team and me to work efficiently together on projects. Overall, Descript enhances productivity and simplifies the editing process.”

Aldrich M.

“Transcription based editing makes the process much faster…All in all, a must have editor for most audiences, especially in SaaS marketing.”

Nidhin M.

Surely there’s one for you

Free

no credit card required

Start your journey with text-based editing

Get started

1 transcription hour / month

Export 720p, with watermarks

Limited trial of Basic AI Actions

Limited trial of AI Speech

Hobbyist

$16

per person / month, billed annually

Elevate your projects, watermark-free

Get started

10 transcription hours / month

Export 1080p, watermark-free

20 uses / month of Basic AI Actions suite including Filler Word Removal, Studio Sound, Draft Show Notes, Create Clips, and more

30 minutes / month of AI speech with stock AI speakers and custom voice clones

5 minutes / month of avatars

Questions? We have answers

What file formats does the tool support for adding subtitles besides M4V?
Besides M4V, the tool supports adding subtitles to various file formats including MP4, MOV, and AVI. This versatility ensures that users can work with a wide range of video files, making it a convenient choice for diverse multimedia projects.
Can I customize the appearance of the subtitles added to my M4V files?
Yes, you can customize the appearance of the subtitles added to your M4V files. Descript allows you to adjust font style, size, color, and positioning to match your preferences, ensuring your subtitles are both readable and visually appealing.
What pricing plans does Descript offer for individual users and teams?
Descript offers flexible pricing plans for both individual users and teams. Individual plans start with a free tier, while paid options include the Creator plan at $12/month and the Pro plan at $24/month. Teams can opt for customized plans based on their specific needs.
Does Descript provide any collaboration features for team projects?
Yes, Descript offers robust collaboration features for team projects. Team members can work together in real-time, leave comments, and make edits simultaneously. This ensures a seamless workflow and efficient project management, making it easier to add subtitles to M4V files collaboratively.