Android video capture with Vuforia

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I want to do video capture with Vuforia. For iOS, i found a plugin that works so no problem. For Android, I tried Intel INDE. It doesn't work. It can work alone but not with Vuforia. Do you other Android video capture plugin that i can try?

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Answer by SunnyChow · Jan 19, 2016 at 07:42 PM

I build a blank project, added INDE, add Vuforia, and it works t$$anonymous$$s time.

Just want to put more information. it doesn't work very good. It doesn't work quite well. Some android may crash when recording video in some resolution. So I try to chop & resize the image and then send to INDE plugin after the rendering. But it get glitchy grap$$anonymous$$c in some android device. I feel that the plugin is not instantly writing the given frame into the movie file. Therefore if you get t$$anonymous$$s problem, you probably need to solve it with an array of RenderTexture.

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Bruno-Gregoire · Feb 22, 2017 at 10:59 AM 0

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Hi @SunnyChow. I'm facing the same issues you describe in your reply. What do you think of when you speak about an array of RenderTexture ? It would be awesome if you could help me with these. Sometimes and especially on some devices, my capture doesn't start at all, do you have any clue about that ? Thanks in advance, it's really weird that there are no stable alternative to this outdated plugin..

SunnyChow Bruno-Gregoire · Feb 23, 2017 at 07:27 AM 0

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i remember that when i tried to record video in different resolution, my device may crash. That's why i had to chop and resize the unity render result, to the resolution that my devices accept. And this caused another problem, which i need to fixed with an array of RenderTexture to fix it.

If you read their cs script, you can see that it works as an image effect. Unity send RenderTexture to the script, and the script send the native id of that RenderTexture to the native plugin. But because the ratio doesn't match with the acceptable video resolution. I need to make it render to another RenderTexture with chopping and resizing, and send this rendertexture to native plugin. And then i find out, for some device, the video get glitch, it looks like the video merge several frames of image.

It makes me feel the plugin probably doesn't sync with unity, it probably hold several frames before encoding it to the video file. Revising the RenderTexture in Unity may influence the recording in the native plugin. That's why i prepare an array of RenderTexture, so the plugin has time to buffer.

Bruno-Gregoire SunnyChow · Feb 23, 2017 at 07:55 AM 0

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Thanks a lot @SunnyChow ! For the array, do you really save the render textures themself or you copy them into new textures ?

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Android video capture with Vuforia

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