![FFMPEG:制作视频剪辑时出错:t 的持续时间规范无效:](https://linux22.com/image/1611874/FFMPEG%EF%BC%9A%E5%88%B6%E4%BD%9C%E8%A7%86%E9%A2%91%E5%89%AA%E8%BE%91%E6%97%B6%E5%87%BA%E9%94%99%EF%BC%9At%20%E7%9A%84%E6%8C%81%E7%BB%AD%E6%97%B6%E9%97%B4%E8%A7%84%E8%8C%83%E6%97%A0%E6%95%88%EF%BC%9A.png)
我在 Linux Mint 19 上。我正在尝试从 mkv 文件中提取视频片段。
我在我手头的一些笔记中找到了一条旧的样本命令,但适用于 mpeg。我更改了相关字符串并尝试运行此命令:
ffmpeg -i input.mkv -ss 00:12:38.000 -t 00:02:71 output.mkv
我收到此错误信息:
Invalid duration specification for t: 00:02:71
我想从视频的 12:38 开始剪辑,并且希望剪辑长度为 2:71。
完整输出如下。感谢提供任何线索
Mint19Cinnamon3.8.9> ffmpeg -i input.mkv -ss 00:12:38.000 -t 00:02:71 output.mkv
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
WARNING: library configuration mismatch
avcodec configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, matroska,webm, from 'input.mkv':
Metadata:
encoder : libebml v1.3.9 + libmatroska v1.5.2
creation_time : 2019-11-15T05:11:58.000000Z
Duration: 00:49:56.61, start: 0.000000, bitrate: 4331 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Metadata:
BPS-eng : 3689288
DURATION-eng : 00:49:56.577000000
NUMBER_OF_FRAMES-eng: 71846
NUMBER_OF_BYTES-eng: 1381904488
_STATISTICS_WRITING_APP-eng: mkvmerge v38.0.0 ('The Silent Type') 64-bit
_STATISTICS_WRITING_DATE_UTC-eng: 2019-11-15 05:11:58
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:1(eng): Audio: eac3, 48000 Hz, 5.1(side), fltp, 640 kb/s (default)
Metadata:
BPS-eng : 640000
DURATION-eng : 00:49:56.608000000
NUMBER_OF_FRAMES-eng: 93644
NUMBER_OF_BYTES-eng: 239728640
_STATISTICS_WRITING_APP-eng: mkvmerge v38.0.0 ('The Silent Type') 64-bit
_STATISTICS_WRITING_DATE_UTC-eng: 2019-11-15 05:11:58
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:2(eng): Subtitle: subrip
Metadata:
title : English
BPS-eng : 54
DURATION-eng : 00:47:28.011000000
NUMBER_OF_FRAMES-eng: 701
NUMBER_OF_BYTES-eng: 19492
_STATISTICS_WRITING_APP-eng: mkvmerge v38.0.0 ('The Silent Type') 64-bit
_STATISTICS_WRITING_DATE_UTC-eng: 2019-11-15 05:11:58
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Invalid duration specification for t: 00:02:71
Mint19Cinnamon3.8.9>
答案1
-t 00:02:71
表示 2 分 71 秒,因此应写为-t 00:03:11
。如果您希望它的长度为 2 秒 710 毫秒,请使用-t 00:02.71