Movie from images

asked 2013-05-31 16:17:12 -0600

Math03

1 ●1 ●2

updated 2013-06-01 11:04:33 -0600

Hi,

I try to convert some images into movie on Android device.

Is that possible without using JNI?

Any clues on how i could achieve that?

Edit : For now, i have an array of the images in a Mat array. I have to create a new movie file and then write all frame in it. So i guess i need to instanciate some kind of encoder and pass it all Mat elements, but i don't find anything like it in the documentation. CameraBridgeViewBase seems to be for camera use. Apparently it's possible using VideoCapture(String filename), but it's seems you can't do that in Android.

Thanks.

Math.

answered 2013-05-31 16:48:58 -0600

MysticBE

260 ●5 ●11 ●17

yes it's possible without the JNI, just use the OpenCV Library 2.4.5 and you can work with Java wrappers instead. You should check out the samples in OpenCV-2.4.5-android-sdk\samples. I think tutorial 1 would help you out.

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Ok, i look at tutorial 1, but that doesn't really help me, i don't need the camera. The images i want in the movie are already in memory.

For now, i have an array of the images in a Mat array. I have to create a new movie file and then write all frame in it. So i guess i need to instanciate some kind of encoder and pass it all Mat element, but i don't find anything like it in the documentation.

CameraBridgeViewBase and VideoCapture seems to be for camera use. Apparently it's possible using VideoCapture(String filename), but it's seems you can't do that in Android.

I find VideoWriter but did'nt succeed calling it from JAVA code.

Math03 ( 2013-06-01 04:23:18 -0600 )edit

Tutorial 1 was just to show you that you can work with Java wrappers instead of JNI, I get that the code does not help you, it was just an answer on your first question. Can't help you for the rest, still learning it all myself

MysticBE ( 2013-06-01 08:11:48 -0600 )edit

Ok thanks for the help :)

Math03 ( 2013-06-01 11:01:26 -0600 )edit

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