首先用ffprobe命令来查看视频信息
ffprobe version git-2020-02-25-36451f9 Copyright (c) 2007-2020 the FFmpeg develo
pers
built with gcc 9.2.1 (GCC) 20200122
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfi
g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libb
luray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --e
nable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable
-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 -
-enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enab
le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --en
able-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcode
c --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvd
ec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 42.100 / 56. 42.100
libavcodec 58. 73.102 / 58. 73.102
libavformat 58. 39.101 / 58. 39.101
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 77.100 / 7. 77.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf58.39.101
Duration: 02:22:59.79, start: 0.000000, bitrate: 813 kb/s
Chapter #0:0: start 0.000000, end 675.966000
Metadata:
title : Chapter 1
Chapter #0:1: start 675.966000, end 1200.449000
Metadata:
title : Chapter 2
Chapter #0:2: start 1200.449000, end 1808.473000
Metadata:
title : Chapter 3
Chapter #0:3: start 1808.473000, end 2360.608000
Metadata:
title : Chapter 4
Chapter #0:4: start 2360.608000, end 2936.642000
Metadata:
title : Chapter 5
Chapter #0:5: start 2936.642000, end 3542.413000
Metadata:
title : Chapter 6
Chapter #0:6: start 3542.413000, end 4136.882000
Metadata:
title : Chapter 7
Chapter #0:7: start 4136.882000, end 4654.107000
Metadata:
title : Chapter 8
Chapter #0:8: start 4654.107000, end 5315.184000
Metadata:
title : Chapter 9
Chapter #0:9: start 5315.184000, end 6046.790000
Metadata:
title : Chapter 10
Chapter #0:10: start 6046.790000, end 6654.856000
Metadata:
title : Chapter 11
Chapter #0:11: start 6654.856000, end 7252.578000
Metadata:
title : Chapter 12
Chapter #0:12: start 7252.578000, end 7812.554000
Metadata:
title : Chapter 13
Chapter #0:13: start 7812.554000, end 7968.919000
Metadata:
title : Chapter 14
Chapter #0:14: start 7968.919000, end 8579.785000
Metadata:
title : Chapter 15
Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv,
progressive), 1920x800 [SAR 1:1 DAR 12:5], 811 kb/s, 23.98 fps, 23.98 tbr, 24k
tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Data: bin_data (text / 0x74786574)
Metadata:
handler_name : SubtitleHandler
可以看到视频的元数据区有Chapter信息,还有一个Subtitle流,是之前的软字幕流,虽然这个流里边已经没有东西了,但就是去不掉.
-map_chapters -1
经过测试,这个参数不仅删除了Chapter信息,还把Subtitle流顺道删除了,记录一下.
