一些编译选项以后很可能做优化的时候用到
--enable-libx264 enable H.264 encoding via x264 [no]
--enable-libx265 enable HEVC encoding via x265 [no]
--enable-mediacodec enable Android MediaCodec support [no]
--enable-jni enable JNI support [no]
--enable-opencl enable OpenCL processing [no]
--enable-opengl enable OpenGL rendering [no]
--enable-openssl enable openssl, needed for https support
if gnutls, libtls or mbedtls is not used [no]
--enable-libopencv enable video filtering via libopencv [no]
--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]
--enable-libopus enable Opus de/encoding via libopus [no]
--enable-librtmp enable RTMP[E] support via librtmp [no]
--enable-libspeex enable Speex de/encoding via libspeex [no]
--enable-libtensorflow enable TensorFlow as a DNN module backend
for DNN based filters like sr [no]
--enable-libssh enable SFTP protocol via libssh [no]
--enable-libmp3lame enable MP3 encoding via libmp3lame [no]
--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
--enable-libopenh264 enable H.264 encoding via OpenH264 [no]
--enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
--enable-cuda-nvcc enable Nvidia CUDA compiler [no]
