This is a experimental app which perform basic function Speed of operation depends on cpu
I provide one main Feature to merge video and audio by removing existing video sound
Before merging you can perform extra manupulation on audio i.e you make audio faast or slow.
Now you caN PERFORM Various operation on video.These operation may take long time its depends on type of video and duration. for example to make video slow or fast it take more time.
Known issue: #It may not support some audio and video format since I didnot test for all formats. #It suppor API level 16 i.e. Jelly_beAN to lolipop I only test on KitKat 4.4.