Add Audio to Video Online Free â OpusClip
Add audio to video in seconds with OpusClip. Whether you need voiceover narration, background music, or sound effects, layer professional audio over your clips without complex software. Upload your video, choose your audio sourceâAI voiceover, your own recording, or stock tracksâand OpusClip syncs everything instantly. Perfect for creators, marketers, and founders who need polished videos fast. No rendering delays, no audio drift. Just clean, publish-ready clips with the exact sound you want.
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Three Reasons Why OpusClip is Best
Instant Audio Layering
Add audio to video with one click. Upload your clip, select voiceover or music, and OpusClip layers it perfectly in syncâno manual timeline adjustments.
AI Voiceover + Custom Tracks
Generate natural AI voiceover from text or upload your own audio files. Mix narration, music, and effects in seconds for complete creative control.
Auto-Ducking & Balance
OpusClip automatically balances voice and background music so your message stays clear. No need to fiddle with volume curves or audio levels.
Instant Audio Layering
Add audio to video with one click. Upload your clip, select voiceover or music, and OpusClip layers it perfectly in syncâno manual timeline adjustments.
Instant Audio Layering
Add audio to video with one click. Upload your clip, select voiceover or music, and OpusClip layers it perfectly in syncâno manual timeline adjustments.
AI Voiceover + Custom Tracks
Generate natural AI voiceover from text or upload your own audio files. Mix narration, music, and effects in seconds for complete creative control.
AI Voiceover + Custom Tracks
Generate natural AI voiceover from text or upload your own audio files. Mix narration, music, and effects in seconds for complete creative control.
Auto-Ducking & Balance
OpusClip automatically balances voice and background music so your message stays clear. No need to fiddle with volume curves or audio levels.
Auto-Ducking & Balance
OpusClip automatically balances voice and background music so your message stays clear. No need to fiddle with volume curves or audio levels.
Why OpusClip Wins
OpusClip makes it effortless to add audio to video. Upload your clip, type your script for instant AI voiceover, or drop in your own audio file. OpusClip syncs everything automatically, balances levels, and delivers a polished video in seconds. No timeline wrestling. No export waits. Just professional sound, every time.
How it Works
Upload or paste a link
Upload your video clip to OpusClip and open the audio editor.
Auto-clip & caption
Choose AI voiceover (type your script) or upload your own audio fileâmusic, narration, or sound effects.
Reframe for every platform
OpusClip auto-syncs the audio to your video and balances levels with smart ducking.
Export & publish anywhere
Preview, adjust if needed, and export your video with perfectly layered audio ready to publish.
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Explore OpusClip Features for Adding Audio to Video and Beyond
Batch Processing
Convert multiple videos to text simultaneously to save time on large content libraries.
Timestamp Precision
Get exact timestamps for every word and phrase to navigate your video content effortlessly.
Editable Text Output
Review and refine your video transcripts with an intuitive editor before exporting.
Multi-Language Support
Extract text from videos in over 20 languages for global content accessibility and reach.
Searchable Transcripts
Find specific moments in your videos instantly by searching through the extracted text.
Speaker Identification
Automatically detect and label different speakers in your video transcripts for clarity.
Instant AI Transcription
Convert your video content into accurate text transcripts in seconds with advanced speech recognition.
Multiple Export Formats
Download your video text as SRT, VTT, TXT, or other popular subtitle and document formats.
What people are saying
"Been using OpusClip as a Pro user for about two months. This is an incredible timesaver! I typically upload a 12-15 video daily and out pop 10-15 clips ranging from 30 seconds to two minutes (using the auto settings), Each is branded with colors and a logo of my choosing."
Alan S.
"Opus Clip is not only easy to use but the choice of clips chosen by their AI blows away the competition...and I've tested them all. The ability to edit the clips by text and then publish them directly to social channels has also been a game changer for our workflow. Now, we can effortlessly put out more content to expand our reach online."
A W.
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Anonymous
Frequently Asked Questions
How do I add audio to video with OpusClip?
Upload your video, then choose AI voiceover by typing your script or upload your own audio file. OpusClip syncs the audio to your video automatically, balances levels, and delivers a polished clip in seconds. No timeline editing or manual sync requiredâjust upload, add audio, and export.
Can I add multiple audio tracks to one video?
Yes. OpusClip lets you layer voiceover, background music, and sound effects on the same video. The platform auto-balances volume levels and applies smart ducking so your voiceover stays clear while music plays underneath. Mix as many tracks as you need for a professional result.
What audio formats can I add to video in OpusClip?
OpusClip supports MP3, WAV, and M4A audio files. You can upload your own recordings, music tracks, or sound effects in any of these formats. Alternatively, generate AI voiceover directly from text without needing an external audio file at all.
Does OpusClip automatically sync audio to video?
Yes. When you add audio to video, OpusClip aligns the audio track to your video timeline instantly. There's no drift or manual adjustment needed. If you're using AI voiceover, the narration is timed to match your video length and pacing automatically.
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.
