How to Use Kmplayer Filters and Effects - The KMPlayer

Access the Filter menu while a video is playing to apply audio, video, and visual effects that adjust color, brightness, contrast, and more. The KMPlayer video player puts these tools directly in the playback interface, letting you enhance any file format from MP4 to MKV without leaving the player window.

Accessing Video Filters and Effects

Opening the Filter Menu

Start playing any video in the player. Right-click on the video window and look for "Filter" or "Video" options in the context menu. Alternatively, navigate to Preference > Video > Filter from the main menu. This is where most adjustments live.

The interface shows sliders for brightness, contrast, hue, and saturation. Each slider responds in real time—adjust brightness and watch the picture update instantly without stopping playback. This immediate feedback saves time when tweaking how to use KMPlayer filters and effects for specific content.

Available Video Adjustments

The player includes standard color correction tools. Brightness ranges from −100 to +100. Contrast and saturation work the same way. The hue slider lets you shift colors across the spectrum—useful when a video has an unwanted color cast. Gamma correction handles shadow and highlight detail independently.

You'll also find aspect ratio controls here. Switch between 4:3, 16:9, or custom ratios. The player supports 3D playback adjustments if your content and display support it.

Audio Filters and the Equalizer

Using the Audio Equalizer

Press Ctrl+Shift+E to open the equalizer directly. The player includes preset configurations: Normal, Pop, Rock, Classical, and more. Select one and it immediately adjusts frequency response across ten bands.

Custom equalizer work requires moving individual sliders. Each band targets a frequency range from 60Hz (bass) through 16kHz (treble). Most users only touch 2-3 bands when correcting muddy audio or boosting vocals.

Audio Track and Subtitle Options

The KMPlayer media player supports adding subtitles during playback. Press O to load a subtitle file while a video plays. The player automatically syncs most SRT and ASS files. Need to shift timing? Use [ ] keys to adjust sync by 50ms increments. Learn more about managing subtitles in KMPlayer for detailed steps.

If your file contains multiple audio tracks, switch between them using Right Ctrl + Up/Down Arrow. This works for streaming and local files alike.

Advanced Customization and Performance

Screen Capture and Picture-in-Picture

The Filter menu includes screen capture—grab single frames at full resolution without external tools. The player also offers picture-in-picture mode for watching two videos simultaneously, useful when comparing footage.

For Windows 10 users running multiple displays, optimize playback settings to use hardware acceleration. This reduces CPU load when processing filters on demanding codecs.

Filter Persistence Across Videos

Changes you make to color or audio settings apply only to the current playback session. Close the video and reopen it—settings reset to defaults. Some competing players like Potplayer save profiles per file, but the KMPlayer keeps things simple by treating filters as temporary adjustments.

The player supports streaming protocols including RTMP and HTTP, so filters work on live streams too.

Quick Reference: Common Shortcuts

Use these to speed up how to use KMPlayer filters and effects without touching menus.

This player has shipped free since 2002, and the filter system remains one of its strongest features for Windows users working with MP4, AVI, and virtually every format.