ffmpeg - 连接调整后音量视频的问题

Question

我已经拍摄了一些视频剪辑并使用 ffmpeg 调整了它们的音量，然后尝试连接它们(使用 ffmpeg)，但是虽然我可以观看单独调整的音量剪辑文件并听到调整后的音量，但最终的连接版本包含视频但没有音频。
我用来调节音量的命令是:

> ffmpeg -y -i "E:/_Videos/Test/snippet.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts "E:/_Videos/Test/snippet.ts"


> ffmpeg -y -i "E:/_Videos/Test/snippet.ts" -vol 409 -vcodec copy  "E:/_Videos/Test/snippet_v1.6.ts"

我使用 concat 的命令是:

> ffmpeg -y -progress progressinfo.dat -f concat -safe 0 -i "E:/_Videos/Test/concat.txt" -vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black" "E:/_Videos/Test/_MERGED.mp4"

此的输出如下，但列出了多个与此类似的错误...

[aac @ 00000284490f6580] More than one AAC RDB per ADTS frame is not implemented. 
Update your FFmpeg version to the newest one from Git. If the problem still occurs, 
it means that your file has a feature which has not been implemented.

[aac @ 00000284490f6580] channel element 3.11 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input

完整的输出......

ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  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-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libx

ml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, concat, from 'E:/_Videos/Test/concat.txt':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1(und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 136 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 00000284495c5c40] using SAR=1/1
[libx264 @ 00000284495c5c40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 00000284495c5c40] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 00000284495c5c40] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=9 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'E:/_Videos/Test/_MERGED.mp4':
  Metadata:
    encoder         : Lavf58.29.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.54.100 aac
[aac @ 00000284490f6580] More than one AAC RDB per ADTS frame is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 00000284490f6580] channel element 3.11 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000284490f6580] channel element 3.11 is not allocated
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 00000284490f6580] channel element 3.11 is not allocated
.
.
.

我尝试了几种不同的方法来调整音量，并且在 4.2.3 版和最新的 4.4.1 版上尝试过，但都失败并出现相同的错误。 (我在 Windows 10 上)
(在不调整音量的情况下连接原始 .ts 文件可以)。
我做错了什么(如何在将 mp4 与其他 mp4 连接之前调整其音量)？

Answer 1

您没有将音频编码到输出文件中，请尝试 -acodec copy (或 -c:a copy )在 -vcodec copy 之后