November 15, 2021

You’ve got questions, we’ve got answers.

MP4 video file size reducer

H.264/Advanced Video Coding (AVC) is an industry standard for video compression. The H.264 standard is also known as MPEG-4 Part 10 and is a successor to earlier standards such as MPEG-2 and MPEG-4. An ITU standard for compressing video based on MPEG-4 that is popular, especially for high-definition video. AVC stands for Advanced Video Coding.

How to use

  1. Select one Video Source
    Click “Open” button to select one source video file, H.264 Encoder : MPEG-2, DivX, XviD .mp4 supported etc (you can find more supported formats on Open Dialog).

  2. Dialogue Box appear
    Click “Browse” to browse and set one output file name. The default file extension is “.mp4”, you can use other file extension (like “.avi”).

  3. choose one of encoding settings

  4. Encode to H264 video
    make sure your PC have enough disk space to save the output file (Read “System Requirements”).


mp4 video compression

File Extension for H264


You may come across all kind of file extensions and still the codec can be H264:

  • .avi – Yes, people use .avi for H264 videos too.
  • .mp4 – Nero Recode and Quicktime use this format. Better than AVI as you can store AAC audio as well (Default).
  • .mkv – Matroska container – can support many video and audio formats. Have a look here for more info.
  • .h264 – This extension is not commonly used. Maybe in the future.