MP4 Converter

Convert your files to and from MP4, for free.



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By proceeding, you confirm you own the rights to the files you upload and agree to our Terms of Use.


Auto
Sets how the video is encoded. "Auto" suits most conversions. "Copy" reuses the video as-is, so it is fast and keeps full quality, but only when the output format supports it.
No change
Choose how the video is resized: to a set resolution, or to a different aspect ratio, where the video's width is kept and the height is recalculated to match. Select "No change" to keep the original size.
No change
Sets how many frames per second the output video has. Lowering it reduces file size but makes motion less smooth, and raising it above the source frame rate won't add smoothness. "No change" keeps the source frame rate.
None
Rotates the video clockwise by the angle you select. Choose "None" to leave it as-is.
No change
Flips the video horizontally or vertically. "No change" leaves it as-is.
Upload
Select the best option for your subtitles: 'Upload' to add your own, or 'Copy' to replicate from the original file.
Choose a file Browse
Upload a .srt or .ass file.
Hard
Choose how subtitles are added. "Hard" burns them into the video permanently; "Soft" keeps them separate so viewers can turn them off. Default is Hard.
Auto
Sets how the audio is encoded. "Auto" suits most conversions. "Copy" reuses the audio as-is, so it is fast and keeps full quality, but only when the output format supports it.
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Fades the audio in at the start of the output.
Fades the audio out at the end of the output.
Enable to drop the audio stream from the output, leaving video only.
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Specify the end position of trim (HH:MM:SS.MS). Leave at 00:00:00.00 to disable.
x
Enter crop rectangle's width and height in pixels (0 - 10000). Odd dimension numbers will be rounded down to the nearest even number.
Enter the x-coordinate of the crop rectangle's top left position
Enter the y-coordinate of the crop rectangle's top left position.


How to Convert to MP4?

  1. Click the “Choose Files” button to select your files.
  2. Convert to MP4 by clicking the "Convert" button
  3. Once the conversion finishes, click the "Download MP4" button to save the file.

Convert Any File

FreeConvert supports more than 1500 file conversions. You can convert videos, images, audio files, or e-books. There are tons of Advanced Options to fine-tune your conversions.

Best Quality

FreeConvert is an online file converter. So it works on Windows, Mac, Linux, or any mobile device. All major browsers are supported. Simply upload a file and select a target format.

Free & Secure

We know that file security and privacy are important to you. That is why we use 256-bit SSL encryption when transferring files and automatically delete them after 8 hours.


How do I convert my videos to MP4 format?

  • 1. Select the video files that you want to convert to mp4 format
  • 2. From the Output dropdown, select MP4 as the target output
  • 3. Click Convert

How do I convert MP4 files to other formats?

  • 1. Select your MP4 files
  • 2. Select a target extension from the Output dropdown
  • 3. Click Convert

What programs can be used to play MP4 videos?

MP4 format is popular because it can be played on most devices or browsers. For Mac users, the QuickTime video player can easily play MP4 files. For Windows users, Windows Media Player can also play MP4 files. If your native video player can not play your MP4 video, we highly recommend the VLC Media Player. It is free to download/use and has better codec support.


What is the best way to convert to mp4 format?

FreeConvert.com’s MP4 Converter is the fastest and best way to convert to and from MP4 format. Simply upload your videos and click the Convert button to convert them to MP4 format. Plus, we provide the most comprehensive and easy-to-understand Advanced Options which can help you fine-tune the MP4 conversion quality. For example, you can choose an advanced video codec like H.265 for better video quality and size savings. You can also adjust video quality, resolution, bitrate, and much more.


Why can’t I play my MP4 file?

If you can not play the MP4 video, it could be corrupted (i.e. missing file chunks) or DRM protected. While these two issues can not be recovered, FreeConvert.com can still help you play your MP4 files by making them compatible with old devices (Enable this option after selecting H.264 codec from the Advanced Options).


How to convert MP4 at the highest quality?

We recommend using an advanced codec like H.265 or H.264 for encoding the video. Both codecs allow you to select a CRF value (video quality factor). Choose a lower CRF value for better video quality (at the expense of larger file sizes)


MPEG-4 (MP4) is a container video format that can store multimedia data, usually audio and video. It is compatible with a wide range of devices and operating systems, using a codec to compress file size, resulting in a file that is easy to manage and store. It is also a popular video format for streaming over the Internet, such as on YouTube. Many consider MP4 to be one of the best video formats available today.

 

How to open an MP4 file?

MP4 files open in the operating system's default video player. Simply double-clicking the file opens it. There is no need for third-party software. On Windows, it opens in Windows Media Player. On Mac, it opens in QuickTime.

 

On some devices, particularly mobile, opening this file type can be problematic. MP4 is a container that contains various kinds of data, so when there is a problem opening the file, it usually means that data in the container (an audio or video codec) is not compatible with the device’s OS. To resolve this issue, try VLC media player.

 

Developed by: Moving Picture Experts Group (MPEG)

Standard: ISO/IEC 14496

Initial release: 1999

Useful links:

https://en.wikipedia.org/wiki/MPEG-4

https://mpeg.chiariglione.org/standards/mpeg-4.html

FreeConvert.com can convert your files to these related formats:


Your Data, Our Priority

At FreeConvert, we go beyond just converting files—we protect them. Our robust security framework ensures that your data is always safe, whether you're converting an image, video, or document. With advanced encryption, secure data centers, and vigilant monitoring, we've covered every aspect of your data's safety.

Learn more about our commitment to security
  • SSL/TLS Encryption SSL/TLS
    Encryption
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    Centers
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    Authentication

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