合并视频后，持续时间过长-ffmpeg [英] After merge videos, the duration is too long - ffmpeg
本文介绍了合并视频后，持续时间过长-ffmpeg的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有包含内容的文件txt
I have file txt with content
file intro.mp4
file video.mp4
file outtro.mp4
，持续时间为10s，178s，13s.
我使用ffmpeg通过以下命令将3个文件合并为一个文件:
I use ffmpeg to merge 3 files into one with below command:
ffmpeg -f concat -i "file.txt" -vcodec copy -acodec copy "endfile.mp4"
endfile.mp4的持续时间更长，11分钟(660s).
The duration of endfile.mp4 is longer 11 mins (660s).
我有一个问题，which params of video affect to merge?和which common params to merge another videos?
我的英语真的太糟糕了.抱歉:)
本周好工作！
My English really too bad. Sorry for it :)
Good working this week!
P/S文件的详细信息:
P/S Details infor of files:
intro.mp4:
ffprobe version N-82885-g6d09d6e Copyright (c) 2007-2016 the FFmpeg developers<br>
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)<br>
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags='-L/root/ffmpeg_build/lib -ldl' --<br>bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame<br> --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265<br>
libavutil 55. 43.100 / 55. 43.100<br>
libavcodec 57. 68.100 / 57. 68.100<br>
libavformat 57. 61.100 / 57. 61.100<br>
libavdevice 57. 2.100 / 57. 2.100<br>
libavfilter 6. 68.100 / 6. 68.100<br>
libswscale 4. 3.101 / 4. 3.101<br>
libswresample 2. 4.100 / 2. 4.100<br>
libpostproc 54. 2.100 / 54. 2.100<br>
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/to/intro.mp4':<br>
Metadata:<br>
major_brand : isom<br>
minor_version : 512<br>
compatible_brands: isomiso2avc1mp41<br>
encoder : Lavf56.23.100<br>
Duration: 00:00:10.08, start: -0.013061, bitrate: 701 kb/s<br>
Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)<br>
Metadata:<br>
handler_name : SoundHandler<br>
Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 853 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)<br>
Metadata:<br>
handler_name : VideoHandler<br>
outtro.mp4:
ffprobe version N-82885-g6d09d6e Copyright (c) 2007-2016 the FFmpeg developers<br>
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)<br>
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags='-L/root/ffmpeg_build/lib -ldl' --<br>bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame<br> --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265<br>
libavutil 55. 43.100 / 55. 43.100<br>
libavcodec 57. 68.100 / 57. 68.100<br>
libavformat 57. 61.100 / 57. 61.100<br>
libavdevice 57. 2.100 / 57. 2.100<br>
libavfilter 6. 68.100 / 6. 68.100<br>
libswscale 4. 3.101 / 4. 3.101<br>
libswresample 2. 4.100 / 2. 4.100<br>
libpostproc 54. 2.100 / 54. 2.100<br>
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/to/outtro.mp4':<br>
Metadata:<br>
major_brand : isom<br>
minor_version : 512<br>
compatible_brands: isomiso2avc1mp41<br>
encoder : Lavf56.23.100<br>
Duration: 00:00:13.08, start: -0.013061, bitrate: 481 kb/s<br>
Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)<br>
Metadata:<br>
handler_name : SoundHandler<br>
Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 392 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)<br>
Metadata:<br>
handler_name : VideoHandler<br>
video.mp4
ffprobe version N-82885-g6d09d6e Copyright (c) 2007-2016 the FFmpeg developers<br>
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)<br>
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags='-L/root/ffmpeg_build/lib -ldl' --<br>bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame<br> --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265<br>
libavutil 55. 43.100 / 55. 43.100<br><br>
libavcodec 57. 68.100 / 57. 68.100<br><br>
libavformat 57. 61.100 / 57. 61.100<br><br>
libavdevice 57. 2.100 / 57. 2.100<br><br>
libavfilter 6. 68.100 / 6. 68.100<br><br>
libswscale 4. 3.101 / 4. 3.101<br><br>
libswresample 2. 4.100 / 2. 4.100<br><br>
libpostproc 54. 2.100 / 54. 2.100<br><br>
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'path/to/video.mp4':<br>
Metadata:<br>
major_brand : isom<br>
minor_version : 512<br>
compatible_brands: isomiso2avc1mp41<br>
encoder : Lavf57.61.100<br>
Duration: 00:02:58.38, start: 0.000000, bitrate: 922 kb/s<br>
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 782 kb/s, 29.97 fps, 29.97 tbr, 30k <br>tbn, 59.94 tbc (default)<br>
Metadata:<br>
handler_name : VideoHandler<br>
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)<br>
Metadata:<br>
handler_name : SoundHandler<br>
推荐答案
简介/结尾和主要视频的分辨率，帧频和时基不匹配.
The resolution, frames rates and timebase of the intro/outro and main videos don't match.
像这样转换您的前奏/后奏，然后进行转换:
Convert your intro/outro like this and then concat:
ffmpeg -i intro.mp4 -s hd720 -r 30000/1001 -video_track_timescale 30k -c:a copy newintro.mp4
这篇关于合并视频后，持续时间过长-ffmpeg的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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