小师兄 发表于 2017-7-19 10:54:00

Option loop not found.

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

孙悟空 发表于 2017-7-19 11:02:58

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

孙悟空 发表于 2017-7-19 11:03:52

再确认一下你的图片格式是否支持loop参数

小师兄 发表于 2017-7-19 11:07:27

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 countset 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 发表于 2017-7-19 11:08:08

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 发表于 2017-7-19 12:21:01

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
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