MP4 to MP4 Converter

"Convert MP4 to MP4" online for FREE

Why Convert MP4 to MP4?

File Size

At first glance, converting an MP4 file to another MP4 file may seem counterintuitive. After all, the file is already in the desired format, so why bother converting it again? However, there are several reasons why converting MP4 to MP4 can be beneficial. One reason is to reduce the file size of the video. By re-encoding the video using more efficient compression algorithms or reducing the bitrate, it's possible to shrink the file size of the MP4 file, making it easier to share or upload online.

Resolution

Another reason to convert MP4 to MP4 is to change the video's resolution or aspect ratio. For example, if you have a 1080p MP4 file but want to play it on a device that only supports 720p, you can convert the file to a lower resolution to ensure compatibility. Similarly, if you have a video with a unusual aspect ratio, you can convert it to a more standard ratio, such as 16:9, to make it easier to view on different devices. By re-encoding the video, you can also adjust the frame rate, which can be useful for creating slow-motion or time-lapse effects.

Select a File to Convert MP4 to MP4

This tool has a max filesize limit of 2.00 GiB or 2.15 GB (2,147,483,648 bytes)

Input File

No file loaded

Make sure your files duration is correctly detected before continuing

ClearSelect

Framerate

Truncate

MPEG 4 Video Encoder

Preset

If you are uploading the video to social media its best to use the ultrafast option as the quality will not be effected only the file size.

Preset

Effects the amount of effort the cpu should use

Constant Rate Factor (CRF)

Lower values give better quality but increase the filesize

Codec

Select the video encoder to use

Tune

Profile

Pixel Format

Fraunhofer FDK AAC Audio Encoder

Stream

Use

0:a

to select the first available audio stream. You can also select stream offsets for multi stream container formats.

The stream to extract, eg (0:1)

Sample Rate

Fraunhofer FDK AAC has a limited set of supported sample rates

Sample Rate

Bit Rate Control

Select how the encoder controls the bit rate when encoding

Bit Rate

Bit Rates are represented as Kilo Bits per second

Bit Rates are applied on a per channel basis.

kbit/s

Valid Range (8-264)

Cutoff

Cutoff is a term used for the process of a low pass filter.

The cutoff should be around half the sample rate. The range is 173 Hz to 20,000 hz.

Valid Range (173-20000)

Organized Video Filters

All filters are processed in the order they appear here. Changing the order of the filters can have a massive effect on the stream.

Filter