How to Increase the Volume of a Video: 7 Methods That Actually Work
The fastest way to permanently increase the volume of a video is with a dedicated app. On iPhone, Loudify boosts any video's audio up to 1000% (10x) in a few seconds. Pick the video, drag the slider, tap save. If you only want playback louder without changing the file, VLC handles that at up to 200%.
You recorded a moment. A concert, a family dinner, a lecture, a screen recording of a call. You play it back and the audio is barely there. Turning up the phone doesn't help. Even AirPods sound thin.
This is one of the most common video problems on any phone, and it's fixable in under a minute if you pick the right tool. Below are seven methods, ranked from fastest to most technical. Skip to the one that fits your situation.
Why is my video so quiet in the first place?
Before jumping to a fix, a quick 30-second detour. Videos come out quiet for one of three reasons:
- The mic was far from the source. Phones use omnidirectional mics that pick up everything within about 3 feet clearly. Anything beyond that gets thin.
- The room was loud. In noisy environments, the phone lowers gain automatically to prevent distortion, which also lowers your subject.
- The device output is capped. iPhones in the EU have a limit on max headphone volume. Some countries cap it lower than others.
The first two mean your file is quiet, so you need to boost the audio inside the file. The third means the file is fine but your playback is limited. Different fixes, so knowing which applies saves time.
Method 1: Boost the file with a dedicated app (fastest for iPhone)
If you want the video to stay louder wherever you play it, boost the file itself. On iPhone, a dedicated app is the fastest option.
Install Loudify from the App Store
Free download, no account needed. Works offline. Search "Loudify" or use the direct App Store link.
Pick your video from Photos
Tap to add. Loudify opens the file directly, so it never uploads to a server. Your video stays on your phone.
Drag the volume slider
You can go up to 1000% (10x louder). The waveform preview updates live so you can hear the difference before saving.
Save back to Photos
The boosted video goes into your camera roll as a new file. The original stays untouched.
Start at 300-400% for a genuinely quiet clip. Go to 700-1000% only for the quietest sources. Above 500%, you'll start to notice background noise more, so watch the preview.
Full disclosure: I built Loudify because every other option on iPhone either uploaded videos to a server or capped the boost too low. It's free with no ads on the free tier, and the advanced controls (normalize, peak limit) are optional.
Boost any video up to 10x on iPhone
Method 2: Free online tool (works on any device)
If you're not on iPhone, or you'd rather not install an app, an online tool handles it. Three that work well in 2026:
- Clideo Increase Volume at up to 300% boost, watermark on the free tier for videos over a few minutes.
- 123apps Video Louder at up to 500%, no watermark, files up to 700 MB.
- Kapwing Volume at up to 200%, account required to download without watermark.
Steps are the same across all three: upload the video, drag a slider, click boost, download the result.
Online tools upload your video to their servers for processing. If the video is personal, private, or contains anything sensitive, this matters. Read the tool's privacy policy or use a local option instead.
Method 3: iMovie on iPhone (built-in, free)
iMovie ships free on every iPhone and can boost video audio up to 200%.
Open iMovie, create a new project
Tap the plus icon, pick Movie, select your video from Photos.
Tap the video clip in the timeline
Look for the audio icon (a small speaker) at the bottom of the screen.
Drag the volume slider
You can go up to 200% (2x). Not enough for very quiet clips, but sometimes it's all you need.
Export to Photos
Tap Done, then the share icon, then Save Video.
iMovie is fine for mildly quiet clips. It's the wrong tool for anything more than 2x quieter than normal because 200% is its ceiling.
Method 4: VLC (playback only, no file change)
VLC is a free media player for iPhone, Android, Mac, and Windows. It plays audio at up to 200% of the original volume without changing the file.
Use this when you just want to hear a quiet clip once and don't need to share the louder version. The file stays exactly the same.
Install VLC on your device
Get it from videolan.org for desktop, or the App Store / Play Store on mobile.
Open your video in VLC
Drag the file into VLC or use File > Open.
Bump volume above 100%
On desktop, click the volume slider and drag past 100% up to 200%. On mobile, tap the speaker icon and use the plus button.
Great for one-off viewing. Useless if you want to send the louder version to someone else.
Method 5: Turn up device output (the free zero-effort fix)
Before installing anything, make sure your device output isn't the actual bottleneck. On iPhone:
- Turn off headphone volume limit. Settings > Sounds & Haptics > Headphone Safety > toggle Reduce Loud Sounds off.
- Turn off the EU volume cap. Settings > Accessibility > Audio & Visual > uncheck any volume limit.
- Check individual app volume. Some apps (Instagram, TikTok, YouTube) have their own in-app volume that stacks on top of system volume.
On Android, the same settings live under Sound & vibration > Volume levels. Look for a "safe listening" toggle.
Sometimes the file is fine and one of these three toggles is the reason you couldn't hear it.
Method 6: Play through a better speaker
If the phone speaker is the issue, hardware is faster than software. AirPods, over-ear headphones, or any Bluetooth speaker will make a quiet video easier to hear than the phone's built-in speaker, especially for spoken content.
This won't help if you need to send the video to someone else. It only fixes playback for you.
Method 7: ffmpeg (technical, most control)
If you're comfortable with a command line, ffmpeg is the most powerful tool for this. It's free, open source, and gives you exact control.
To boost volume by 3x (about +10 dB):
ffmpeg -i input.mp4 -filter:a "volume=3.0" -c:v copy output.mp4
To normalize loudness to a target (recommended for consistency):
ffmpeg -i input.mp4 -filter:a "loudnorm=I=-16:TP=-1.5:LRA=11" -c:v copy output.mp4
The -c:v copy flag skips re-encoding the video, so processing is fast and picture quality is untouched.
Use ffmpeg when you have a batch of files to process, when you need exact loudness targets (like -14 LUFS for YouTube), or when other tools cap the boost too low. Skip it for a single one-off video where an app takes 30 seconds.
All 7 methods compared
| Method | Where | Max boost | Speed | Cost | Best for | |---|---|---|---|---|---| | Loudify app | iPhone | 1000% | 30 sec | Free | Fastest permanent fix on iPhone | | Online tools | Any browser | 300 to 500% | 2-3 min | Free with limits | No install, occasional use | | iMovie | iPhone / Mac | 200% | 2 min | Free | Mild boost, built in | | VLC | Any device | 200% | Instant | Free | Playback only, no file change | | Device settings | iPhone / Android | N/A | Instant | Free | When the file is fine but output is capped | | Better speaker | Any device | N/A | Instant | Hardware cost | Personal playback | | ffmpeg | Mac / PC / Linux | Unlimited | 1-5 min | Free | Batch processing, exact control |
What to do if the boost still isn't loud enough
If you pushed to 1000% and the video still sounds quiet, the problem isn't volume anymore. It's clarity. Three fixes:
- Normalize instead of amplify. Normalizing raises the loudest parts to a target level rather than multiplying everything equally. Loudify has a normalize toggle. ffmpeg does it with
loudnorm. - Reduce background noise first. A boosted noise floor sounds louder but not clearer. Apps like Descript or Adobe Podcast Enhance strip background noise before boosting.
- Re-record if possible. If it's a live event or a Zoom call being recorded, moving the phone closer to the sound source gets more dB naturally than any post processing.
Which one should you pick?
For most people asking this question, the answer is a dedicated iPhone app. It's the fastest and highest-ceiling option, and it doesn't upload your file anywhere.
If you're not on iPhone, start with the online tools. Switch to ffmpeg only if you find yourself doing this weekly.
Frequently Asked Questions
How do I increase the volume of a video for free?
Free options include Loudify on iPhone (up to 1000% boost, no watermark), 123apps Video Louder in your browser (up to 500%, no watermark), or ffmpeg on desktop (unlimited). All three keep the original file untouched and produce a louder copy.
Can I increase video volume above 100% on iPhone?
Yes. iOS doesn't cap this because you're editing the file, not the playback. Apps like Loudify let you push audio to 1000% of the original. iMovie caps at 200%, so it's fine for slightly quiet clips but not enough for very quiet ones.
Will boosting the volume ruin the audio quality?
Only if you push too far. Below 400% boost, most audio stays clean. Above 500%, you'll notice more background noise (hiss, hum, room sound) because those get amplified too. Normalizing instead of amplifying gives a cleaner result at high levels.
How do I boost the volume of an MP4 file specifically?
MP4 is a container format, so any method above works. Fastest on iPhone is Loudify. On desktop, ffmpeg handles MP4 natively with a single command: ffmpeg -i input.mp4 -filter:a 'volume=3.0' -c:v copy output.mp4. This keeps the video stream untouched and only re-encodes audio.
Why is the volume different on the same video across TikTok, YouTube, and Instagram?
Every platform runs loudness normalization on upload. TikTok, YouTube, and Instagram all target around -14 LUFS but with different peak limits. If your source is quieter than the target, they'll boost it. If it's louder, they'll turn it down. Pre-boosting a quiet file before uploading gives you the best chance of matching what viewers hear from other creators.
Can I increase video volume without an app?
Yes, three ways: use a browser-based tool (Clideo, 123apps, Kapwing), open the file in VLC and turn volume to 200% for playback, or use ffmpeg from the command line on desktop. Each has trade-offs on privacy, speed, and max boost.
Related guides
🔊
Ready to make your videos louder?
Loudify boosts video volume up to 1000%. Available on iOS. No account needed.
Download Loudify