我正在使用一个应用程序在其中使用REST API将图像和视频上传到服务器，在上传之前先压缩这些文件，为此，我正在使用FFMPEG库。问题是FFMPEG命令在android版本8和更低版本中可以正常运行，但在android版本9中不能正常运行。 它总是在版本9中触发onFailure（String message）。当我运行fFmpeg.execute（cmd，new ExecuteBinaryResponseHandler（）
时，总是会收到此错误。ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.9.x (GCC) 20150123 (prerelease)
configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-ffprobe --enable-libopus --enable-libvorbis --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-libvpx --enable-libass --enable-yasm --enable-pthreads --disable-debug --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --enable-nonfree --pkg-config=pkg-config --pkg-config-flags=--static --prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags=
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
[mjpeg @ 0xf1562380] unable to decode APP fields: Invalid data found when processing input
Input #0, image2, from '/storage/EAE5-B041/DCIM/Camera/20190601_195456.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 1034124 kb/s
Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 4128x3096, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[mjpeg @ 0xf1562700] unable to decode APP fields: Invalid data found when processing input
[swscaler @ 0xf08c3000] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to '/storage/emulated/0/Movies/scene_machine_pic.jpg':
Metadata:
encoder : Lavf58.12.100
Stream #0:0: Video: mjpeg, yuvj422p(pc), 800x600, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc58.18.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
[image2 @ 0xf1524600] Could not open file : /storage/emulated/0/Movies/scene_machine_pic.jpg
av_interleaved_write_frame(): I/O error
frame= 1 fps=0.0 q=5.8 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.0495x
video:37kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!
我从堆栈溢出和github搜索了很多东西，但是没有找到合适的解决方案。
对于图像压缩，我使用此命令。
String[] complexCommand = {"-i", path, "-vf", "scale=w=800:h=600:force_original_aspect_ratio=decrease", filePath,};
对于视频压缩，我使用此命令。
String[] complexCommand = {"-ss", "" + startMs / 1000, "-y", "-i", path, "-t", "" + (endMs - startMs) / 1000, "-vcodec", "libx264", "-preset", "ultrafast", "-s", "640x360", filePath};
我希望在fFmpeg.execute（cmd，new ExecuteBinaryResponseHandler（）中触发onSuccess（String message）方法并获取正确的生成输出。