Option loop not found.

小师兄

执行 带有 -loop 的命令，执行报出 Option loop not found.

孙悟空

ffmpeg --help full | grep loop
还有，看一下你的ffmpeg版本

孙悟空

再确认一下你的图片格式是否支持loop参数

小师兄

孙悟空 发表于 2017-7-19 11:02
ffmpeg --help full | grep loop
还有，看一下你的ffmpeg版本

⋊> ~/Desktop ffmpeg --help full | grep loop                             11:07:09
ffmpeg version 3.3.2 Copyright (c) 2000-2017 the FFmpeg developers
  built with Apple LLVM version 8.1.0 (clang-802.0.42)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  libavutil      55. 58.100 / 55. 58.100
  libavcodec     57. 89.100 / 57. 89.100
  libavformat    57. 71.100 / 57. 71.100
  libavdevice    57.  6.100 / 57.  6.100
  libavfilter     6. 82.100 /  6. 82.100
  libavresample   3.  5.  0 /  3.  5.  0
  libswscale      4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc    54.  5.100 / 54.  5.100
-stream_loop loop count  set number of times input stream shall be looped
     loop                         E..V.... use loop filter
  -skip_loop_filter  <int>        .D.V.... skip loop filtering process for the selected frames (from INT_MIN to INT_MAX) (default default)
  -aac_coder         <int>        E...A... Coding algorithm (from 0 to 2) (default twoloop)
     twoloop                      E...A... Two loop searching method
  -ignore_loop       <boolean>    .D...... ignore loop setting (default true)
  -ignore_loop       <boolean>    .D...... ignore loop setting (netscape extension) (default true)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -loop              <boolean>    .D...... force loop over input file sequence (default false)
  -plays             <int>        E....... Number of times to play the output: 0 - infinite loop, 1 - no loop (from 0 to UINT32_MAX) (default 1)
  -loopstart         <int64>      E....... Loopstart position in milliseconds. (from -1 to INT_MAX) (default -1)
  -loopend           <int64>      E....... Loopend position in milliseconds. (from 0 to INT_MAX) (default 0)
  -loop              <int>        E....... Number of times to loop the output: -1 - no loop, 0 - infinite loop (from -1 to 65535) (default 0)
  -loop              <int>        E....... Number of times to loop the output: 0 - infinite loop (from 0 to 65535) (default 1)
aloop AVOptions:
  loop              <int>        ..F.A... number of loops (from -1 to INT_MAX) (default 0)
  size              <int64>      ..F.A... max number of samples to loop (from 0 to INT_MAX) (default 0)
  start             <int64>      ..F.A... set the loop start sample (from 0 to I64_MAX) (default 0)
loop AVOptions:
  loop              <int>        ..FV.... number of loops (from -1 to INT_MAX) (default 0)
  size              <int64>      ..FV.... max number of frames to loop (from 0 to 32767) (default 0)
  start             <int64>      ..FV.... set the loop start frame (from 0 to I64_MAX) (default 0)
  loop              <int>        ..FVA... set loop count (from 0 to INT_MAX) (default 1)
  loop              <int>        ..FVA... set loop count (from 0 to INT_MAX) (default 1)

小师兄

孙悟空 发表于 2017-7-19 11:03
再确认一下你的图片格式是否支持loop参数

如何确认图片是否支持 loop

孙悟空

小师兄 发表于 2017-7-19 11:08
如何确认图片是否支持 loop

ffmpeg -h demuxer=  后面跟上你的图片的封装，例如png例如jpeg