android - java.lang.UnsatisfiedLinkError: Couldn't load avutil from loader dalvik.system.PathClassLoader findLibrary returned null -

i using fmmr.jar create thumbnail of video file url. earlier this, gives unsatisfied link error.

here stack trace:

    01-29 13:27:10.816: e/androidruntime(17217): fatal exception: asynctask #3     01-29 13:27:10.816: e/androidruntime(17217): process: com.bdcs.corporate.vikramsingh, pid: 17217     01-29 13:27:10.816: e/androidruntime(17217): java.lang.runtimeexception: error occured while executing doinbackground()     01-29 13:27:10.816: e/androidruntime(17217):    @ android.os.asynctask$3.done(asynctask.java:300)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.futuretask.finishcompletion(futuretask.java:355)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.futuretask.setexception(futuretask.java:222)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.futuretask.run(futuretask.java:242)     01-29 13:27:10.816: e/androidruntime(17217):    @ android.os.asynctask$serialexecutor$1.run(asynctask.java:231)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.lang.thread.run(thread.java:841)     01-29 13:27:10.816: e/androidruntime(17217): caused by: java.lang.unsatisfiedlinkerror: couldn't load avutil loader dalvik.system.pathclassloader[dexpath=/data/app/com.bdcs.corporate.vikramsingh-1.apk,librarypath=/data/app-lib/com.bdcs.corporate.vikramsingh-1]: findlibrary returned null     01-29 13:27:10.816: e/androidruntime(17217):    @ java.lang.runtime.loadlibrary(runtime.java:358)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.lang.system.loadlibrary(system.java:526)     01-29 13:27:10.816: e/androidruntime(17217):    @ wseemann.media.ffmpegmediametadataretriever.<clinit>(ffmpegmediametadataretriever.java:120)     01-29 13:27:10.816: e/androidruntime(17217):    @ com.bdcs.coporate.videothumbnail.thumbnailextractor.createvideothumbnail(thumbnailextractor.java:23)     01-29 13:27:10.816: e/androidruntime(17217):    @ com.bdcs.corporate.publicinfo.listadapter$1.doinbackground(listadapter.java:113)     01-29 13:27:10.816: e/androidruntime(17217):    @ com.bdcs.corporate.publicinfo.listadapter$1.doinbackground(listadapter.java:1)     01-29 13:27:10.816: e/androidruntime(17217):    @ android.os.asynctask$2.call(asynctask.java:288)     01-29 13:27:10.816: e/androidruntime(17217):    @ java.util.concurrent.futuretask.run(futuretask.java:237)     01-29 13:27:10.816: e/androidruntime(17217):    ... 4 more 

this libs folder:

it contains .so files libavutil.so unable load.