我正在尝试向不包含音频的视频文件添加多个音频输入。以下命令将“audio1.mp3”添加到视频中，但无法添加第二个和第三个。
ffmpeg -y -i video.mp4 -itsoffset 00:00:05 -i audio1.mp3 -itsoffset 00:00:10 -i audio2.mp3 -itsoffset 00:00:15 -i audio3.mp3 -map 0:0 -map 1:0 -map 2:0 -map 3:0 -c:v copy output.mp4
完整控制台输出：
ffmpeg -y -i video.mp4 -itsoffset 00:00:05 -i audio1.mp3 -itsoffset 00:00:10 -i audio2.mp3 -itsoffset 00:00:15 -i audio3.mp3 -map 0:0 -map 1:0 -map 2:0 -map 3:0 -c:v copy output.mp4
ffmpeg version 3.2.1 Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 7.3.0 (clang-703.0.31)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-nonfree --enable-vda
libavutil 55. 34.100 / 55. 34.100
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.100 / 57. 56.100
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc2c4801000] Could not find codec parameters for stream 1 (Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, 2 channels, s16p, 127 kb/s): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc2c4801000] Could not find codec parameters for stream 2 (Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, 2 channels, s16p, 192 kb/s): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.1 : stereo
Guessed Channel Layout for Input Stream #0.2 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.100
Duration: 00:02:13.93, start: 0.000000, bitrate: 4090 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 4380 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 127 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 192 kb/s
Metadata:
handler_name : SoundHandler
Input #1, mp3, from 'audio1.mp3':
Metadata:
encoder : Lavf57.14.100
Duration: 00:02:13.93, start: 0.025057, bitrate: 128 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
Metadata:
encoder : Lavc57.15
[mp3 @ 0x7fc2c3828a00] Estimating duration from bitrate, this may be inaccurate
Input #2, mp3, from 'audio2.mp3':
Metadata:
TSS : GarageBand 10.1.6
Duration: 00:01:50.03, start: 0.000000, bitrate: 192 kb/s
Stream #2:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
[mp3 @ 0x7fc2c382a200] Estimating duration from bitrate, this may be inaccurate
Input #3, mp3, from 'audio3.mp3':
Metadata:
TSS : GarageBand 10.1.6
Duration: 00:01:57.47, start: 0.000000, bitrate: 192 kb/s
Stream #3:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Output #0, mp4, to 'output.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.100
Stream #0:0(eng): Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p(tv, bt709), 1920x1080, q=2-31, 4380 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc57.64.101 aac
Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc57.64.101 aac
Stream #0:3: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc57.64.101 aac
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #1:0 -> #0:1 (mp3 (native) -> aac (native))
Stream #2:0 -> #0:2 (mp3 (native) -> aac (native))
Stream #3:0 -> #0:3 (mp3 (native) -> aac (native))
Press [q] to stop, [?] for help
[mp3 @ 0x7fc2c3829c00] overread, skip -6 enddists: -4 -4.92 bitrate=10204.2kbits/s speed=15.9x
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -3 -3
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -4 -4.76 bitrate=10082.1kbits/s speed=11.9x
Last message repeated 1 times
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -4 -4.17 bitrate=7235.9kbits/s speed= 10x
[mp3 @ 0x7fc2c382b400] overread, skip -7 enddists: -6 -6
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -4 -4.35 bitrate=6058.6kbits/s speed=9.25x
[mp3 @ 0x7fc2c382b400] overread, skip -7 enddists: -6 -6
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -4 -4
Last message repeated 1 times
[mp3 @ 0x7fc2c3829c00] overread, skip -7 enddists: -6 -6.16 bitrate=6159.1kbits/s speed= 9.1x
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -4 -4
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -2 -2.93 bitrate=5968.1kbits/s speed=8.89x
Last message repeated 1 times
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -2 -2
Last message repeated 1 times
[mp3 @ 0x7fc2c3829c00] overread, skip -7 enddists: -6 -6.03 bitrate=5494.9kbits/s speed=8.65x
Last message repeated 1 times
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -2 -2.35 bitrate=5645.0kbits/s speed=8.33x
Last message repeated 1 times
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -2 -2.12 bitrate=5764.3kbits/s speed=8.29x
Last message repeated 1 times
[mp3 @ 0x7fc2c3829c00] overread, skip -6 enddists: -4 -4.43 bitrate=5193.9kbits/s speed= 8.1x
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -3 -3
[mp3 @ 0x7fc2c382b400] overread, skip -4 enddists: -1 -1.68 bitrate=4808.6kbits/s speed=8.03x
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -2 -2
[mp3 @ 0x7fc2c3829c00] overread, skip -7 enddists: -6 -6
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -4 -4
[mp3 @ 0x7fc2c3829c00] overread, skip -5 enddists: -4 -4.96 bitrate=4682.3kbits/s speed=8.05x
[mp3 @ 0x7fc2c3829c00] overread, skip -7 enddists: -6 -6
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -4 -4.00 bitrate=4488.9kbits/s speed=8.11x
[mp3 @ 0x7fc2c382b400] overread, skip -7 enddists: -6 -6
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -2 -2
Last message repeated 1 times
[mp3 @ 0x7fc2c382b400] overread, skip -4 enddists: -1 -1.01 bitrate=4284.2kbits/s speed=8.24x
[mp3 @ 0x7fc2c382b400] overread, skip -5 enddists: -2 -2
frame= 3480 fps=217 q=-1.0 Lsize= 67666kB time=00:02:18.90 bitrate=3990.5kbits/s speed=8.67x
video:62092kB audio:5409kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.245015%
[aac @ 0x7fc2c3be0000] Qavg: 407.313
[aac @ 0x7fc2c4006a00] Qavg: 5943.593
[aac @ 0x7fc2c4009400] Qavg: 7361.354
有什么帮助吗？
答案1
所有映射的音频流似乎都已包含在内。
要输出到一个流，请使用amix过滤器。
ffmpeg -y -i video.mp4 -i audio1.mp3 -i audio2.mp3 -i audio3.mp3
-filter_complex "[1]adelay=5000|5000[a];
[2]adelay=10000|10000[b];
[3]adelay=15000|15000[c];
[a][b][c]amix=3[a]"
-map 0:v -map "[a]" -c:v copy output.mp4