atrim=0:2在我播放视频时播放的很好，现在播放mp3了，我该如何添加工作结束时间，比如说9秒结束？
摘要，我想以 2 秒开始，以 9 秒结束。
ffmpeg -y -i "C:\Users\test\Desktop\vidz\New folder (2)\target\vaastav song .mp4" -i "C:\Users\test\Desktop\vidz\New folder (2)\target\2.mp3" -filter_complex "[0]atrim=0:2[Apre];[0]atrim=5,asetpts=PTS-STARTPTS[Apost];[Apre][1][Apost]concat=n=3:v=0:a=1" -vcodec copy -y "C:\Users\test\Desktop\vidz\New folder (2)\target\output1.mp4"
日志文件
ffmpeg version git-2020-04-13-59e3a9a Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200328
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 42.102 / 56. 42.102
libavcodec 58. 78.102 / 58. 78.102
libavformat 58. 42.100 / 58. 42.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 77.101 / 7. 77.101
libswscale 5. 6.101 / 5. 6.101
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\test\Desktop\vidz\New folder (2)\target\vaastav song .mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2018-09-02T04:28:46.000000Z
Duration: 00:05:08.80, start: 0.000000, bitrate: 2289 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 2160 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
creation_time : 2018-09-02T04:28:46.000000Z
handler_name : ISO Media file produced by Google Inc. Created on: 09/01/2018.
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
creation_time : 2018-09-02T04:28:46.000000Z
handler_name : ISO Media file produced by Google Inc. Created on: 09/01/2018.
Input #1, mp3, from 'C:\Users\test\Desktop\vidz\New folder (2)\target\2.mp3':
Metadata:
genre : Electronic;Indie
title : A Distorted Noise With A Little Bit Of Sense
artist : Lenin Was A Zombie
encoder : Lavf56.19.100
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
Duration: 00:00:54.00, start: 0.025057, bitrate: 192 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
Metadata:
encoder : Lavc56.21
Stream mapping:
Stream #0:1 (aac) -> atrim
Stream #0:1 (aac) -> atrim
Stream #1:0 (mp3float) -> concat:in1:a0
concat -> Stream #0:0 (aac)
Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
Output #0, mp4, to 'C:\Users\test\Desktop\vidz\New folder (2)\target\output1.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
encoder : Lavf58.42.100
Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
encoder : Lavc58.78.102 aac
Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 2160 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
Metadata:
creation_time : 2018-09-02T04:28:46.000000Z
handler_name : ISO Media file produced by Google Inc. Created on: 09/01/2018.
frame= 737 fps=0.0 q=-1.0 size= 7936kB time=00:00:29.44 bitrate=2208.1kbits/s speed=58.9x
[out_0_0 @ 000000000312c900] 100 buffers queued in out_0_0, something may be wrong.
[out_0_0 @ 000000000312c900] 1000 buffers queued in out_0_0, something may be wrong.
frame= 1401 fps=876 q=-1.0 size= 16640kB time=00:01:46.85 bitrate=1275.7kbits/s speed=66.8x
frame= 2281 fps=1086 q=-1.0 size= 26112kB time=00:02:22.01 bitrate=1506.3kbits/s speed=67.6x
frame= 3152 fps=1212 q=-1.0 size= 35584kB time=00:02:56.58 bitrate=1650.8kbits/s speed=67.9x
frame= 4011 fps=1294 q=-1.0 size= 45824kB time=00:03:31.32 bitrate=1776.4kbits/s speed=68.2x
frame= 4882 fps=1356 q=-1.0 size= 56320kB time=00:04:06.03 bitrate=1875.2kbits/s speed=68.3x
frame= 5753 fps=1403 q=-1.0 size= 66560kB time=00:04:40.79 bitrate=1941.8kbits/s speed=68.5x
frame= 6622 fps=1440 q=-1.0 size= 77056kB time=00:05:15.37 bitrate=2001.6kbits/s speed=68.6x
frame= 7482 fps=1467 q=-1.0 size= 85248kB time=00:05:50.20 bitrate=1994.1kbits/s speed=68.7x
frame= 7720 fps=1479 q=-1.0 Lsize= 87248kB time=00:05:59.79 bitrate=1986.5kbits/s speed=68.9x
video:81451kB audio:5634kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.186449%
[aac @ 0000000003017ac0] Qavg: 648.065
我试图弄乱代码行，但是没有成功，所以我求助于您