ENPTES

Change the contrast of a short video

Pick flatter, a little more, more or much more, then download MP4. The picture is re-encoded. The work runs in this tab.

Runs in your browser Free No sign-up
  1. Choose file
  2. Set options
  3. Get result

Your file never leaves your device. Processed locally in your browser. Nothing is uploaded.

The FFmpeg eq filter changes contrast and re-encodes the picture. A soundtrack is kept when the file has one. Clips up to 30 seconds. A photo belongs on Adjust brightness.

How to change video contrast

1. Drop a short video you already have. A GIF or an audio file is refused here. 2. Leave more, or pick flatter, a little more or much more. 3. Press “Change contrast” and download the MP4.

GustKit runs the FFmpeg eq filter. Flatter uses 0.75, so colors sit closer to gray. A little more uses 1.15. More uses 1.35. Much more uses 1.7. The picture is re-encoded. A soundtrack is kept when the file has one. Width and height stay the same.

A short clip, a new MP4

Adjust brightness can change the contrast of a photo on the canvas. Video brightness changes only how light a short clip is. This page changes only the contrast of a short video. The download is always MP4, because every frame is re-encoded. Clips stay within the limit shown next to the button.

The clip stays in this tab

FFmpeg runs in this browser on one CPU thread. GustKit does not fetch a video from a link. Leave the tab open until the download appears. Close it and the file is gone.

How to check the contrast

1. Play the download next to the original. 2. A light shirt and a dark doorway should pull farther apart on More. 3. If the frame grew, you added a border on another page.

Video brightness changes only how light the clip is. This page changes contrast with the eq filter and saves MP4. Nothing is uploaded.

Frequently asked questions

The download is an MP4 and the lights and darks pulled apart. Did it work?

Yes. More uses contrast 1.35 with the eq filter. Width and height stay the same.

Why is there a time limit?

The eq filter re-encodes every frame. A long clip would sit on one CPU thread for a long time, so this page takes short clips only.

Can I change the contrast and also change the brightness in one step?

No. Change the contrast first, or change the brightness first, then open the other page on the download.

Is the video uploaded?

No. FFmpeg runs in this tab.

The download is MP4 and the lights and darks pulled apart. Did it work?

Yes. More uses contrast 1.35. Width and height stay the same.

Can I change the contrast and also add a border in one step?

No. Change the contrast first, or add the border first, then open the other page on the download.