方形视频1：1配给ffmpeg命令“无法识别的选项”设置'“在Android的作物视频时没有找到？

Question

我用普通的安卓摄像头成功捕获了视频。现在我想使用ffmpeg libray命令以1：1的比例裁剪视频。但它给了我下面的错误。

版本中使用FFMPEG：编译 'com.writingminds：FFmpegAndroid：0.3.2'

命令： - y, -i, /storage/emulated/0/DCIM/ZyfVideo/VID_20170916_093512.mp4, -vf, scale=720:ih*720/iw, crop=720:720,setdar=1:1,setsar=1:1, -threads, 5, -preset, ultrafast, -strict, experimental, -vcodec, libx264, -‌​pr‌​eset, ultrafast‌​, /storage/emulated/0/DCIM/ZyfVideo/VID_20170916_093521.mp4

日志错误：

09-16 09:35:22.184 32149-32226/com.spoof.app D/FFmpeg: Running publishing updates method 
09-16 09:35:22.451 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video :ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers 
09-16 09:35:22.451 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : built with gcc 4.8 (GCC) 
09-16 09:35:22.465 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags= 
09-16 09:35:22.487 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libavutil  55. 17.103/55. 17.103 
09-16 09:35:22.490 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libavcodec  57. 24.102/57. 24.102 
09-16 09:35:22.491 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libavformat 57. 25.100/57. 25.100 
09-16 09:35:22.493 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libavdevice 57. 0.101/57. 0.101 
09-16 09:35:22.494 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libavfilter  6. 31.100/6. 31.100 
09-16 09:35:22.497 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libswscale  4. 0.100/4. 0.100 
09-16 09:35:22.498 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libswresample 2. 0.101/2. 0.101 
09-16 09:35:22.499 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video : libpostproc 54. 0.100/54. 0.100 
09-16 09:35:22.549 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video :Unrecognized option '‌​pr‌​eset'. 
09-16 09:35:22.553 32149-32149/com.spoof.app D/NormalSquareFragment: Progress Video :Error splitting the argument list: Option not found 
09-16 09:35:22.574 32149-32149/com.spoof.app D/NormalSquareFragment: Failure Video :ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers 
                     built with gcc 4.8 (GCC) 
                     configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags= 
                     libavutil  55. 17.103/55. 17.103 
                     libavcodec  57. 24.102/57. 24.102 
                     libavformat 57. 25.100/57. 25.100 
                     libavdevice 57. 0.101/57. 0.101 
                     libavfilter  6. 31.100/6. 31.100 
                     libswscale  4. 0.100/4. 0.100 
                     libswresample 2. 0.101/2. 0.101 
                     libpostproc 54. 0.100/54. 0.100 
                    Unrecognized option '‌​pr‌​eset'. 
                    Error splitting the argument list: Option not found 
09- 

Answer 1

您的副本-‌​pr‌​eset, ultrafast‌​,中的“r”是en编码与其余字符不同，导致无法识别的选项。

删除第二个-‌​pr‌​eset, ultrafast‌​,并删除缩放过滤器后的额外空间。