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• Looking for method to combine images to make a video through phonegap platform for android and ios

  28 novembre 2012, par Pat

  I'm looking to write an application that could combine images and then to form a video. I'm working with Phonegap framework to be available for use on Android and IOS.

  My question is what sort of process is involved to achieve this ?

  At this stage I've tried to read about ffmpeg, most of the questions existing on stackoverflow talk of having to get the source, compiling to make a series of libraries for use. With those libraries it needs to be tied in with the Android/IOS libraries ? (I notice there is an 'android.jar' with the project file in eclipse. Would it exist in there ?) Afterwards my confusion lies with how is this implemented into Phonegap. Develop a plugin ?

  Just to add, libav according to wiki, has hardware accelerated H.264 decoding whilst using x.264 for encoding for Android. How does that work ? Is this something accessed from libav libraries and then have to compiled in within the android.jar ?

  I may have confused terms in trying to describe what I do not know.

  Any help would be appreciated.

• Building FFmpeg for android to run command line args

  11 septembre 2012, par Zargoon

  I am trying to build the FFmpeg library to use in my android app with the NDK. The reason for this is because I am using the native video capture feature in android because I really don't want to write my own video recorder. However, the native video capture only allows for either high-quality encoding, or low quality encoding. I want something in between, and I believe that the solution is to use the FFmpeg library to re-encode the high quality video to be lighter.

  So far I have been able to build the FFmpeg library according to this guide : http://www.roman10.net/how-to-build-ffmpeg-for-android/ and which a few tweaks I have been able to get it to work.

  However, everything that I've found seems to be about writing your own encoder, which seems like overkill to me. All that I really want to do is send a string in command line format to the main() function of FFmpeg and re-encode my video. However, I can't seem to figure out how I build FFmpeg to give me access to the main method. I found this post : Compile ffmpeg.c and call its main() via JNI which links to a project doing what I want more of less, but for the life of me I cannot figure out what is going on. It also seems like he is compiling more than I want, and I would really like to keep my application as light weight as possible.

  Some additional direction would be extremely helpful. Thank you.

• Trim/cut video in Android app using ffmpeg

  10 août 2012, par K-ran-Beast

  I have downloaded the code for video trimming from github at following link

  https://github.com/uday-rayala/video-trimmer

  It’s working perfectly, but when I try to run it for the second time the code crashes without any exception then again when I try to run it for the 3rd time it works after the crash.
  Does any one have any idea ?

  I am developing an application which has one module of trimming videos.
  I would really appreciate it, if some one could help me.