我有一个像instagram＆amp; amp;现在我想在正方形中裁剪选定的视频并压缩它。 我通过这个命令用FFmpegAndroid测试了ffmpeg：
{"-y", "-ss", "" + (startTime / 1000), "-t", "" + ((endTime - startTime) / 1000), "-i", srcFilePath, "-vcodec", "libx264", "-crf", "35", dstFilePath}
问题是ffmpeg在大约15分钟的时间内缓慢运行大约30秒视频。
我也测试过硅胶，但它只是调整标准视频大小而不是压缩最终视频。
Instagram如何过快地剪切，裁剪和缩小视频文件？
请帮帮我!!!
编辑
上面的Ffmpef日志是：
D/BHUVNESH: Progress command : ffmpeg ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
02-27 20:29:36.402 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg built with gcc 4.8 (GCC)
02-27 20:29:36.402 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg 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=
02-27 20:29:36.402 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libavutil 55. 17.103 / 55. 17.103
02-27 20:29:36.402 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libavcodec 57. 24.102 / 57. 24.102
02-27 20:29:36.402 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libavformat 57. 25.100 / 57. 25.100
02-27 20:29:36.403 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libavdevice 57. 0.101 / 57. 0.101
02-27 20:29:36.403 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libavfilter 6. 31.100 / 6. 31.100
02-27 20:29:36.403 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libswscale 4. 0.100 / 4. 0.100
02-27 20:29:36.403 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libswresample 2. 0.101 / 2. 0.101
02-27 20:29:36.403 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg libpostproc 54. 0.100 / 54. 0.100
02-27 20:29:37.526 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/9016-4EF8/movie/compress_video_new14.mp4':
02-27 20:29:37.527 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.527 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg major_brand : isom
02-27 20:29:37.527 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg minor_version : 512
02-27 20:29:37.527 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg compatible_brands: isomiso2avc1mp41
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg encoder : Lavf57.25.100
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Duration: 00:00:20.01, start: 0.000000, bitrate: 48020 kb/s
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 3840x2160, 47857 kb/s, 28.58 fps, 30 tbr, 90k tbn, 180k tbc (default)
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg rotate : 90
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg handler_name : VideoHandler
02-27 20:29:37.528 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Side data:
02-27 20:29:37.529 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg displaymatrix: rotation of -90.00 degrees
02-27 20:29:37.529 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 155 kb/s (default)
02-27 20:29:37.529 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.529 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg handler_name : SoundHandler
02-27 20:29:37.541 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg [swscaler @ 0xf47ef000] deprecated pixel format used, make sure you did set range correctly
02-27 20:29:37.594 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg [swscaler @ 0xf47e4000] deprecated pixel format used, make sure you did set range correctly
02-27 20:29:37.594 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg No pixel format specified, yuvj420p for H.264 encoding chosen.
02-27 20:29:37.594 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Use -pix_fmt yuv420p for compatibility with outdated media players.
02-27 20:29:37.594 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg [libx264 @ 0xf506d400] using cpu capabilities: none!
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg [libx264 @ 0xf506d400] profile High, level 3.1
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg [libx264 @ 0xf506d400] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Output #0, mp4, to '/storage/emulated/0/Movies/compress_video_new21.mp4':
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg major_brand : isom
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg minor_version : 512
02-27 20:29:37.674 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg compatible_brands: isomiso2avc1mp41
02-27 20:29:37.675 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg encoder : Lavf57.25.100
02-27 20:29:37.675 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 1280x720, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg handler_name : VideoHandler
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg encoder : Lavc57.24.102 libx264
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Side data:
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg unknown side data type 10 (24 bytes)
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 155 kb/s (default)
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Metadata:
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg handler_name : SoundHandler
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream mapping:
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Stream #0:1 -> #0:1 (copy)
02-27 20:29:37.676 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg Press [q] to stop, [?] for help
02-27 20:29:38.359 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 1 fps=0.0 q=0.0 size= 0kB time=00:00:00.16 bitrate= 2.3kbits/s speed=0.247x
02-27 20:29:39.053 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 4 fps=2.9 q=0.0 size= 0kB time=00:00:00.27 bitrate= 1.4kbits/s speed=0.197x
02-27 20:29:39.752 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 7 fps=3.4 q=0.0 size= 0kB time=00:00:00.35 bitrate= 1.1kbits/s speed=0.173x
02-27 20:29:40.466 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 10 fps=3.6 q=0.0 size= 0kB time=00:00:00.46 bitrate= 0.8kbits/s speed=0.167x
02-27 20:29:40.990 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 12 fps=3.6 q=0.0 size= 0kB time=00:00:00.52 bitrate= 0.7kbits/s speed=0.159x
02-27 20:29:41.672 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 15 fps=3.8 q=0.0 size= 0kB time=00:00:00.63 bitrate= 0.6kbits/s speed=0.16x
02-27 20:29:42.408 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 18 fps=3.8 q=0.0 size= 0kB time=00:00:00.72 bitrate= 0.5kbits/s speed=0.153x
02-27 20:29:42.917 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 20 fps=3.8 q=0.0 size= 0kB time=00:00:00.80 bitrate= 0.5kbits/s speed=0.154x
02-27 20:29:43.660 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 23 fps=3.8 q=0.0 size= 0kB time=00:00:00.89 bitrate= 0.4kbits/s speed=0.149x
02-27 20:29:44.392 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 26 fps=3.9 q=0.0 size= 0kB time=00:00:00.99 bitrate= 0.4kbits/s speed=0.149x
02-27 20:29:44.904 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 28 fps=3.9 q=0.0 size= 0kB time=00:00:01.06 bitrate= 0.4kbits/s speed=0.147x
02-27 20:29:45.467 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 30 fps=3.9 q=0.0 size= 0kB time=00:00:01.12 bitrate= 0.3kbits/s speed=0.145x
02-27 20:29:46.014 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 32 fps=3.8 q=0.0 size= 0kB time=00:00:01.19 bitrate= 0.3kbits/s speed=0.143x
02-27 20:29:46.533 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 34 fps=3.8 q=0.0 size= 0kB time=00:00:01.25 bitrate= 0.3kbits/s speed=0.142x
02-27 20:29:47.094 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 36 fps=3.8 q=0.0 size= 0kB time=00:00:01.33 bitrate= 0.3kbits/s speed=0.142x
02-27 20:29:47.681 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 38 fps=3.8 q=0.0 size= 0kB time=00:00:01.40 bitrate= 0.3kbits/s speed=0.14x
02-27 20:29:48.191 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 40 fps=3.8 q=0.0 size= 0kB time=00:00:01.48 bitrate= 0.3kbits/s speed=0.142x
02-27 20:29:48.752 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 42 fps=3.8 q=0.0 size= 0kB time=00:00:01.57 bitrate= 0.2kbits/s speed=0.142x
02-27 20:29:49.531 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 45 fps=3.8 q=0.0 size= 0kB time=00:00:01.68 bitrate= 0.2kbits/s dup=1 drop=0 speed=0.142x
02-27 20:29:51.327 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 46 fps=3.4 q=0.0 size= 0kB time=00:00:01.74 bitrate= 0.2kbits/s dup=1 drop=0 speed=0.128x
02-27 20:29:52.108 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 49 fps=3.4 q=0.0 size= 0kB time=00:00:01.83 bitrate= 0.2kbits/s dup=2 drop=0 speed=0.127x
02-27 20:29:52.755 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 51 fps=3.4 q=29.0 size= 70kB time=00:00:01.89 bitrate= 301.9kbits/s dup=3 drop=0 speed=0.126x
02-27 20:29:53.826 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 52 fps=3.2 q=29.0 size= 93kB time=00:00:01.93 bitrate= 391.3kbits/s dup=3 drop=0 speed=0.12x
02-27 20:29:54.884 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 54 fps=3.1 q=29.0 size= 117kB time=00:00:01.97 bitrate= 482.4kbits/s dup=4 drop=0 speed=0.115x
02-27 20:29:55.448 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 55 fps=3.1 q=29.0 size= 121kB time=00:00:02.04 bitrate= 484.1kbits/s dup=4 drop=0 speed=0.115x
02-27 20:29:55.643 12094-12116/videoeditor.bhuvnesh.com.ffmpegvideoeditor I/MediaPlayer: message received msg=6, ext1=0, ext2=0
02-27 20:29:56.328 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 57 fps=3.1 q=29.0 size= 146kB time=00:00:02.08 bitrate= 571.8kbits/s dup=5 drop=0 speed=0.112x
02-27 20:29:57.838 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 58 fps=2.9 q=29.0 size= 165kB time=00:00:02.12 bitrate= 633.4kbits/s dup=5 drop=0 speed=0.106x
02-27 20:29:58.733 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 60 fps=2.9 q=29.0 size= 189kB time=00:00:02.19 bitrate= 707.6kbits/s dup=6 drop=0 speed=0.104x
02-27 20:29:59.497 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 61 fps=2.8 q=29.0 size= 194kB time=00:00:02.23 bitrate= 712.0kbits/s dup=6 drop=0 speed=0.102x
02-27 20:30:00.706 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 63 fps=2.7 q=29.0 size= 220kB time=00:00:02.29 bitrate= 782.9kbits/s dup=7 drop=0 speed=0.0999x
02-27 20:30:02.546 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 64 fps=2.6 q=29.0 size= 240kB time=00:00:02.34 bitrate= 840.0kbits/s dup=7 drop=0 speed=0.0942x
02-27 20:30:03.278 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 66 fps=2.6 q=29.0 size= 265kB time=00:00:02.38 bitrate= 908.4kbits/s dup=8 drop=0 speed=0.0932x
02-27 20:30:03.877 12094-12094/videoeditor.bhuvnesh.com.ffmpegvideoeditor D/BHUVNESH: Progress command : ffmpeg frame= 67 fps=2.6 q=29.0 size= 270kB time=00:00:02.44 bitrate= 902.0kbits/s dup=8 drop=0 speed=0.0936x