hani-momanii / ffmpeg4android_demo_studio Goto Github PK

The below is the error log I'm getting, I changed the file path to different one ,but still same error

2019-01-11 16:43:53.471 11294-11580/com.examples.ffmpeg4android_demo E/ffmpeg4android: Command validation failed.
2019-01-11 16:43:53.471 11294-11580/com.examples.ffmpeg4android_demo E/ffmpeg4android: Check if input file exists: /sdcard/videokit/video.mp4
2019-01-11 16:43:53.472 11294-11580/com.examples.ffmpeg4android_demo E/ffmpeg4android: vk run exeption.
com.netcompss.ffmpeg4android.CommandValidationException
at com.netcompss.loader.LoadJNI.run(LoadJNI.java:39)
at com.netcompss.loader.LoadJNI.run(LoadJNI.java:55)
at com.examples.ffmpeg4android.ProgressBarExample.runTranscodingUsingLoader(ProgressBarExample.java:101)
at com.examples.ffmpeg4android.ProgressBarExample.access$100(ProgressBarExample.java:25)
at com.examples.ffmpeg4android.ProgressBarExample$5.run(ProgressBarExample.java:222)

Can you please help to resolve this issue i am completely stuck with that.. I am using same library on My app for merging audio and video, it was working well but suddenly this library stops working with the error
Failed to validate license file, existing!, can you please suggest me what should i do next.