<p>To me it is just the matter of the edge color</p>
<p>The <a href="https://ffmpeg.org/ffmpeg-filters.html#colorkey" rel="nofollow noreferrer">colorkey</a> has a similarity parameter; should you try not using 1</p>
<p>Since i don't have any asset to try on this parameter, good luck.</p>

CC BY-SA 4.0
2020-09-06T02:36:22.637Z
2020-09-06T02:36:22.637Z
xer-rex
<p>I have a video of a person on green background and I'm trying to turn background transparent:</p>
<pre class="lang-bash prettyprint-override"><code>ffmpeg -i bg.mp4 -i man.mp4 -filter_complex '[1:v]colorkey=0x00ff00:0.3:0.3[ckout];[0:v][ckout]overlay[out]' -map '[out]' result.mp4
</code></pre>
<p>Colorkey gives this quite noticeable green edge around the person's figure.<br />
Any attempts to increase opacity or blend parameters result in disappearing facial features.</p>
<p><a href="https://i.sstatic.net/RxBJ1.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/RxBJ1.png" alt="enter image description here" /></a></p>
<p>Is there any smart way to change pure green <code>0x00ff00</code> pixels with transparent ones?</p>

<ffmpeg><chromakey>
FFmpeg: chromakey without green edges
Igniter
# FFmpeg: chromakey without green edges

(Asked by: username_0 on 2020-09-05)

I have a video of a person on green background and I'm trying to turn background transparent:
ffmpeg -i bg.mp4 -i man.mp4 -filter_complex '[1:v]colorkey=0x00ff00:0.3:0.3[ckout];[0:v][ckout]overlay[out]' -map '[out]' result.mp4

Colorkey gives this quite noticeable green edge around the person's figure.
Any attempts to increase opacity or blend parameters result in disappearing facial features.

Is there any smart way to change pure green 0x00ff00 pixels with transparent ones?

**Tags:** ffmpeg, chromakey


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## 1 answers

### Answer by username_1 on 2020-09-06. Score: 0

To me it is just the matter of the edge color

The [colorkey](https://ffmpeg.org/ffmpeg-filters.html#colorkey) has a similarity parameter; should you try not using 1

Since i don't have any asset to try on this parameter, good luck.


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