Each beatmap has a file size limit dictated by its total length. This guide will help you to get your beatmap under that limit.
There are 2 types of compression. Lossy and Lossless compression.
Videos are usually where people go wrong. There are thousands of video codecs out there, and believe it or not, YouTube is usually a terrible place to get videos.
H.264 is a good codec to use but like most video codecs, it is lossy. This means you want to avoid re-encoding the video multiple times, but instead encode from the high resolution source once.
This section will show you how to remove audio from videos using Handbrake to reduce the file size of the video file.
Importing the video into Handbrake
Selecting the preset
Audiotab and remove all audio tracks. Do the same for any subtitles by going into the
Subtitlestab and removing all entries.
Removing the audio tracks
Videotab and set the video codec as
H.264 (X264). Change the
Constant Qualityto between 20–25. Smaller values will produce smaller file sizes at the cost of the video's quality.
Setting the video codec and constant quality
Setting the framerate
Dimensionstab and change the width to
1280and change the height to
Setting the video dimensions
Encoding and saving the video
The audio bitrate determines a lot about the size of the audio file. You can use Audacity to change the bitrate of your audio files.
The Ranking Criteria has a rule noting that anything above 192kbps is not allowed. In addition to this, anything under 128kbps is usually considered to be low quality.
Importing audio into Audacity
Export as MP3
Presetand select the quality as
Medium, 145-185 kbps. If you want, you can enter in the metadata in the next dialog. When ready, click