在android系统封装好的ffmpeg. 免费. 采用硬件加速,更快的视频转码.裁剪,剪切,分离,合并,转换,拼接,水印,叠加,混合,转码,压缩, 变速，添加LOGO，添加滤镜，添加背景音乐，加速减速视频，倒放音视频, 多个视频合成等工作; 和普通的ffmpeg相比, 更快速。Wrapped in android system ffmpeg. Free. Use hardware acceleration, faster video transcoding. Crop, cut, separate, merge, convert, stitch, watermark, overlay, blend, transcode, compress, shift, add LOGO, Add filters, add background music, accelerate deceleration video, rewind audio and video, multiple video synthesizers, etc.; faster than normal ffmpeg.