我使用 ffmpeg 连接我的 .VOB 文件。它将它们合并。但是组合后完全没有声音：
ffmpeg -i 'concat:VTS_01_1.VOB|VTS_01_2.VOB|VTS_01_3.VOB|VTS_01_4.VOB|VTS_01_5.VOB|VTS_01_6.VOB|VTS_01_7.VOB' -acodec copy -vcodec copy combined.mpg
有任何想法吗？
编辑：
我的终端输出：
ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 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, mpeg, from 'concat:/home/lau/Desktop/merge/VTS_02_1.VOB|/home/lau/Desktop/merge/VTS_02_2.VOB':
Duration: 00:40:34.30, start: 0.287267, bitrate: 7056 kb/s
Stream #0:0[0x1bf]: Data: dvd_nav_packet
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 320 kb/s
Stream #0:3[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
[mpeg @ 0x55aa4a6e7180] VBV buffer size not set, using default size of 130KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
[mpeg @ 0x55aa4a6e7180] ac3 in MPEG-1 system streams is not widely supported, consider using the vob or the dvd muxer to force a MPEG-2 program stream.
Output #0, mpeg, to '/home/lau/Desktop/merge/combined.mpg':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:3 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpeg @ 0x55aa4a6e7180] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mpeg @ 0x55aa4a68b900] New subtitle stream 0:4 at pos:125679630 and DTS:189.367s
frame= 6805 fps=0.0 q=-1.0 size= 193188kB time=00:04:32.12 bitrate=5815.8kbits/s speed= 544x frame=12253 fps=12253 q=-1.0 size= 397130kB time=00:08:10.04 bitrate=6638.8kbits/s speed= 490x frame=18133 fps=12088 q=-1.0 size= 589072kB time=00:12:05.24 bitrate=6653.9kbits/s speed= 483x frame=24516 fps=12257 q=-1.0 size= 787674kB time=00:16:20.56 bitrate=6580.6kbits/s speed= 490x frame=30390 fps=12155 q=-1.0 size= 984682kB time=00:20:15.52 bitrate=6636.3kbits/s speed= 486x frame=36349 fps=12116 q=-1.0 size= 1183140kB time=00:24:13.88 bitrate=6666.5kbits/s speed= 485x frame=41952 fps=11986 q=-1.0 size= 1375214kB time=00:27:58.00 bitrate=6713.8kbits/s speed= 479x frame=48039 fps=12009 q=-1.0 size= 1562378kB time=00:32:01.48 bitrate=6661.0kbits/s speed= 480x frame=54193 fps=12042 q=-1.0 size= 1754286kB time=00:36:07.64 bitrate=6629.8kbits/s speed= 482x frame=60008 fps=12001 q=-1.0 size= 1944828kB time=00:40:00.24 bitrate=6637.7kbits/s speed= 480x frame=60862 fps=12009 q=-1.0 Lsize= 1969864kB time=00:40:34.40 bitrate=6628.8kbits/s speed= 480x
video:1827970kB audio:133124kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.447200%
我通过
-acodec copy从命令行中删除来修复它：