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Flutter 音视频处理FFmpeg

只能说 Flutter 确实很强大

ffmpeg 插件，文档没给出如何给视频添加水印, 但是给出了执行命令的方法演示，这就足够了。

添加一个水印:

String command = "-i " + inputVideoPath +

" -i "+waterMarkPath+" -filter_complex overlay "+

outVideoPath+"";

添加多个水印命令:

String command = "-i " + inputVideoPath +

" -i "+waterMarkPath2+" -i "+waterMarkPath+

" -filter_complex overlay=10:10,overlay=5:5 "+

outVideoPath+"";

将视频转换成小尺寸视频:

String command = "-i " + inputVideoPath +" -b:v 10000k -s 216x384 "+ outVideoPath+"";

如果碰到 App crash with error message: couldn't find "libmobileffmpeg_abidetect.so"

执行

flutter clean

flutter doctor -v