How to add watermark when is recording

[nvquockhtn]

trafficstars

This library can add watermark to video when is recording? Tks.

[wysaid]

yes

[nvquockhtn]

@wysaid Can you share me document or demo about this? Thank.

[huunhan18pro]

The same question. Thanks

[wysaid]

Make an image, for example: "watermark.png". Make a rule, for example: "@blend addrev watermark.png 1.0" Make sure the loadImageCallback is right. call setFilterWithConfig with the rule.

[huunhan18pro]

Thanks for you reply. Let me try it.

[huunhan18pro]

Awesome, It's work fine. "@blend addrev watermark.png 100" But can you explain about "addrev" text?

[wysaid]

See this: https://github.com/wysaid/android-gpuimage-plus/blob/master/library/src/main/java/org/wysaid/nativePort/CGENativeLibrary.java#L23

Because Android is using premultiplied bitmap&texture, 'CGE_BLEND_MIX' may get a result of twice the strength of the blendImage's alpha channel(The result would be darker than you want). For common usage of mix blending, please use 'CGE_BLEND_ADDREV'.

[huunhan18pro]

Thanks you so much. I will donate to your Paypal account.

[wysaid]

@huunhan18pro Thanks.

[deepakrokz]

Hi @huunhan18pro @wysaid Where should I give mCameraView.setFilterWithConfig("@blend addrev watermark.png 100"); this watermark thing, without displaying it to user watermark can be applied to the recording.

[wysaid]

You may need to add a new filter group to do this. Change the c++ code, and add your functions.😬

[Gaurav-pix]

how can I change size of the watermark (It is getting stretched to the whole viewport) and the watermark image's position?

[wysaid]

how can I change size of the watermark (It is getting stretched to the whole viewport) and the watermark image's position?

You can add your own filter to do this.