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Get 50% off your first month, or 65% off annual Pro plan.

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Add Audio to MP4

Add Audio to MP4 Easily

Transform your MP4 videos by adding audio effortlessly with OpusClip. Whether you want to insert audio into MP4 files for a personal project or enhance a professional presentation, our tool streamlines the process. Choose from a library of copyright-free music tracks or upload your own audio files. With an intuitive interface, you can adjust audio clips to fit your video perfectly, ensuring the right vibe for your audience. Elevate your content and make your videos unforgettable with professional-quality sound in just a few clicks.

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Here's Why You Should Use OpusClip to Easily Add Audio to MP4 Files

🎶

Unique Audio Integration Made Easy

OpusClip offers a seamless way to add audio to MP4 videos, whether you're inserting music or voiceovers. Its intuitive interface ensures even beginners can effortlessly incorporate high-quality sound, saving time and enhancing your content without complex editing skills. It's the best tool for add music to MP4 or insert audio into MP4 videos quickly.
🎛️

Advanced Audio Editing Control

With OpusClip, you can precisely trim, adjust volumes, or enhance audio quality to match your video's tone. Its powerful editing features ensure your added audio complements your visual content perfectly. This level of control makes it ideal for creators needing to add audio to MP4 files while maintaining professional sound quality.
🚀

AI-Powered Audio Enhancement Benefits

OpusClip employs AI-driven tools to refine your audio, such as reducing background noise and isolating voices. These features guarantee clear, crisp sound whether you're adding music or inserting audio into MP4. Using our free tool elevates your videos with studio-quality audio, all with minimal effort.

Effortlessly Add Audio to MP4 Files

Gone are the days of battling complex video editing software to add audio to your MP4 files. OpusClip simplifies the process, allowing you to effortlessly integrate sound into your videos. With just a few clicks, you can select from a library of royalty-free music or upload your own audio files. No more wrestling with timelines or syncing issues. This streamlined approach saves you time and frustration, giving you the freedom to focus on your creative vision. Whether you're an aspiring YouTuber or a small business promoting your brand, OpusClip makes adding the perfect audio to your MP4 files a breeze.
Get Started for FreeGet Started for Free

Effortlessly Add Audio to MP4 Files

Gone are the days of battling complex video editing software to add audio to your MP4 files. OpusClip simplifies the process, allowing you to effortlessly integrate sound into your videos. With just a few clicks, you can select from a library of royalty-free music or upload your own audio files. No more wrestling with timelines or syncing issues. This streamlined approach saves you time and frustration, giving you the freedom to focus on your creative vision. Whether you're an aspiring YouTuber or a small business promoting your brand, OpusClip makes adding the perfect audio to your MP4 files a breeze.
Get Started for FreeGet Started for Free

Professional Quality at Your Fingertips

Quality matters when it comes to audio, and OpusClip ensures your added sound resonates perfectly with your visuals. With features designed for sophisticated audio editing, you can adjust volumes, trim clips, and refine sound quality with ease. By integrating music or voiceovers in a way that enhances the narrative, you're not just adding audio to MP4 files; you're elevating your entire video production. Deliver results that reflect your professionalism and creativity, and watch your audience engage more deeply with your content. Stand apart in a saturated market with the high-quality sound that OpusClip delivers.
Enhance Your Videos NowEnhance Your Videos Now

Professional Quality at Your Fingertips

Quality matters when it comes to audio, and OpusClip ensures your added sound resonates perfectly with your visuals. With features designed for sophisticated audio editing, you can adjust volumes, trim clips, and refine sound quality with ease. By integrating music or voiceovers in a way that enhances the narrative, you're not just adding audio to MP4 files; you're elevating your entire video production. Deliver results that reflect your professionalism and creativity, and watch your audience engage more deeply with your content. Stand apart in a saturated market with the high-quality sound that OpusClip delivers.
Enhance Your Videos NowEnhance Your Videos Now

Unlimited Creativity with OpusClip

When you use OpusClip to insert audio into MP4 videos, you have the power to experiment without limits. From dynamic soundtracks to captivating voiceovers, our user-friendly platform encourages creativity at every turn. You can easily play around with different audio tracks, test out various combinations, and even implement AI-generated voiceovers to find the perfect fit for your content. With no subscription fees upfront, you can explore the full spectrum of audio possibilities and see what truly resonates with your audience. Don’t hold back—let your imagination run wild and create extraordinary videos today.
Try OpusClip for FreeTry OpusClip for Free

Unlimited Creativity with OpusClip

When you use OpusClip to insert audio into MP4 videos, you have the power to experiment without limits. From dynamic soundtracks to captivating voiceovers, our user-friendly platform encourages creativity at every turn. You can easily play around with different audio tracks, test out various combinations, and even implement AI-generated voiceovers to find the perfect fit for your content. With no subscription fees upfront, you can explore the full spectrum of audio possibilities and see what truly resonates with your audience. Don’t hold back—let your imagination run wild and create extraordinary videos today.
Try OpusClip for FreeTry OpusClip for Free

Try OpusClip for Free

Learn How to Add Audio to MP4 in Just 4 Steps

1

Import Your MP4 Video

Begin by uploading your MP4 video to OpusClip. Our platform makes it easy to import your footage, enabling you to get started on adding audio to MP4 in just a few clicks.
2

AI Enhances Your Audio Experience

Once your video is uploaded, our AI starts working to help you add audio to MP4 seamlessly. It identifies key segments, allowing you to effortlessly insert audio into your video.
3

Review and Customize AI Results

Take a moment to review the audio adjustments made by our AI. You can refine the audio details, ensuring that the music complements your video perfectly and aligns with your creative vision.
4

Download or Publish Your Edited Video

After finalizing your edits, choose to download your MP4 with added music or use our scheduling feature to publish directly to your social media platforms. Your content is now ready to engage your audience!

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Explore 8 Essential Features of OpusClip for Enhanced Video Editing

🎶

Add Music to MP4

Choose from a vast library or upload your own music to enhance your MP4 videos effortlessly.
🎵

Easy Audio Addition

Seamlessly add audio to MP4 videos with a few clicks using OpusClip's intuitive interface.
🔊

Insert Audio into MP4

Insert high-quality audio clips directly into your MP4 files for a richer viewing experience.
✂️

Trim and Adjust Audio

Customize your added audio by trimming, adjusting volume, or setting fade effects to match your video perfectly.
🤖

AI-Enhanced Audio Clarity

Utilize AI tools to reduce noise and enhance audio quality for professional results.
🎤

Overlay Multiple Audio Tracks

Layer multiple sound tracks, such as narration, music, and sound effects, with ease.
👀

Preview Before Finalizing

Hear your combined audio and video prior to exporting, ensuring perfect synchronization.
📀

Multiple Audio Formats Support

Import and work with various audio formats like MP3, WAV, M4A, and OGG seamlessly.

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What people are saying

"Now, I can spend more time on my long-form videos and use OpusClip to automatically create shorts for YouTube Shorts and Instagram."

‍

Jennifer B.

Real estate agent and business owner

"OpusClip has been super helpful in being able to take my podcasts and clip them down into usable short clips that I use on Youtube Shorts. It has increased our viewership for our podcast, so I absolutely love it! It's been a great tool, two thumbs up."

Brent B.

YouTube Shorts creator and podcaster

"You can drop in your video and OpusClip does all of the work for you. You also have the ability to edit and customize your clip from what the program originally suggests. If you are looking for an easy, effective tool for adding captions to your videos, look no further than Opus Clip."

Harold D.

Video creator

Frequently Asked Questions

How can I add audio to my MP4 videos using OpusClip?

To add audio to your MP4 videos, simply upload your video file to OpusClip, select the audio track from our library or upload your own, and adjust it to fit your video timeline as needed.

Can I add music to my MP4 videos for free?

Yes, OpusClip offers a selection of copyright-free music tracks that you can use to add music to your MP4 videos at no cost.

Is it possible to insert audio into MP4 files in different formats?

Absolutely! OpusClip supports various audio formats such as MP3, M4A, OGG, and WAV, making it easy to insert audio into your MP4 files.

Can I adjust the volume of the audio I add to my MP4 videos?

Yes, you can easily adjust the audio volume levels within OpusClip to ensure your video has the perfect audio balance.

Frequently Asked Questions

What languages does your video transcription tool support?

Our AI free video transcription technology supports over 20 languages, including English, Spanish, French, German, Japanese, and more. The system automatically detects the spoken language or allows you to specify it before processing. This makes transcribing multilingual video content simple and accurate.

Can I edit my video transcription after it's generated?

Yes, our platform includes a built-in editor for your free video transcription. You can correct any inaccuracies, format text, and add speaker labels directly in the interface. The editor synchronizes with timestamps, making it easy to perfect your transcript before exporting it for use.

What makes AI video transcription faster than manual methods?

AI video transcription processes speech in minutes rather than hours of manual typing. Our advanced algorithms recognize speech patterns across different accents and languages, providing time-stamped text with speaker identification. This technology lets you transcribe a 60-minute video in just a few minutes.

How much does it cost to transcribe a video?

Video transcription costs vary based on video length and features needed. Our platform offers a free trial transcription so you can experience the quality before committing. After that, we provide affordable pricing plans for regular video transcription needs with multi-language support and speaker detection.

How can I transcribe a video?

Upload your video file or paste a link to our AI free video transcription tool. The system automatically converts speech to text with over 95% accuracy. Once complete, you can download your transcript in various formats like TXT, SRT, or VTT for captions, blog posts, or other content.

How accurate are AI YouTube video transcription tools?

AI YouTube video transcript extractors typically achieve 95%+ accuracy for clear audio in English, with strong performance in over 50 other languages. For best results, videos with clear audio and minimal background noise produce the most accurate transcripts, though you can edit any errors afterward.

What formats can I download YouTube video transcripts in?

YouTube video transcript generators typically allow you to download transcripts in multiple formats including TXT (plain text), SRT (SubRip Subtitle), and VTT (Web Video Text Tracks) files. These different formats support various use cases from content creation to adding captions to videos.

Can I transcribe someone else's YouTube video?

Yes, you can transcribe anyone's public YouTube video using a YouTube video transcript generator. Simply copy the video URL, paste it into the transcription tool, and the AI will extract the spoken content into text format. This is useful for research, content repurposing, or accessibility purposes.

How to get a YouTube video transcript from any video?

To get a YouTube video transcript, copy the video URL and paste it into a transcript generator tool. Click "Generate Transcript" and the AI will process the audio, delivering a complete text version in under a minute. You can then edit, format, and download the transcript in your preferred format.

Does YouTube have auto transcription?

Yes, YouTube offers auto transcription for many videos, but these transcripts often contain errors. For more accurate results, use a dedicated YouTube video transcript generator that employs advanced AI to deliver 95%+ accuracy, proper formatting, and additional features like timestamp integration and multiple export formats.

Can I get a transcript of a YouTube video?

Yes, you can get a transcript of any YouTube video by using an AI-powered YouTube video transcript extractor. Simply paste the video URL into the tool, and it will automatically convert the spoken content into text format with high accuracy, allowing you to download the transcript in seconds.

Woman wearing glasses, holding a smartphone and smiling while using a laptopMan with headphones around his neck, smiling at his smartphone while working on a laptop

Enhance Your Videos Effortlessly: Add Audio to MP4 Now

Transform your videos with the perfect sound by using OpusClip to add audio to MP4 files quickly and easily. Our user-friendly tool allows you to select from a variety of copyright-free music tracks or upload your custom audio files in different formats. Whether you want to set the mood with background music or insert audio into MP4 for voiceovers, OpusClip empowers creators to elevate their content professionally without the hassle. Review and adjust your audio clips to perfectly align them with your video's timeline, and create a seamless viewing experience. Join countless satisfied creators and discover how effortless it can be to enhance your multimedia projects with great sound.
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