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• ffmpeg - Concat multi mp4 files with audio file not working

  29 mars 2017, par Thanh Dao

  I follow this thread to concat multi mp4 files with audio file.
  But its not success. Have a lots error notifications had been displayed. I dont know how to fix it.
  Below is my command :

  "ffmpeg" -f concat -safe 0 \
  
  -i /path/to/text.txt \
  
  -i /path/to/audio.mp3 -vsync vfr -vf scale="640:640" -pix_fmt yuv420p \
  
  /path/to/output.mp4 2>&1

  The detail contents of text.txt

  file '/path/to/file1.mp4'
  
  file '/path/to/file2.mp4'
  
  file '/path/to/file3.mp4'
  
  file '/path/to/file4.mp4'
  
  file '/path/to/file5.mp4'
  
  file '/path/to/file6.mp4'
  
  file '/path/to/file7.mp4'
  
  file '/path/to/file8.mp4'
  
  file '/path/to/file9.mp4'
  
  file '/path/to/file10.mp4'
  
  file '/path/to/file11.mp4'
  
  file '/path/to/file12.mp4'
  
  file '/path/to/file13.mp4'
  
  file '/path/to/file14.mp4'
  
  file '/path/to/file15.mp4'
  
  file '/path/to/file16.mp4'
  
  file '/path/to/file17.mp4'
  
  file '/path/to/file18.mp4'

  And some lines of output errors :

  [concat @ 0x357e620] DTS 192000 < 229888 out of order
  
  [h264 @ 0x36920e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x36920e0] error while decoding MB 32 0
  
  [h264 @ 0x36920e0] concealing 2025 DC, 2025 AC, 2025 MV errors in I frame
  
  [h264 @ 0x36b7a80] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x36ff440] corrupted macroblock 26 1 (total_coeff=-1)
  
  [h264 @ 0x36ff440] error while decoding MB 26 1
  
  [h264 @ 0x36ff440] concealing 2003 DC, 2003 AC, 2003 MV errors in P frame
  
  [h264 @ 0x371af40] concealing 1456 DC, 1456 AC, 1456 MV errors in P frame
  
  [h264 @ 0x3736a40] ref 5 overflow
  
  [h264 @ 0x3736a40] error while decoding MB 1 1
  
  [h264 @ 0x3736a40] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x3752520] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x376dfa0] P sub_mb_type 8 out of range at 2 1
  
  [h264 @ 0x376dfa0] error while decoding MB 2 1
  
  [h264 @ 0x376dfa0] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x37a55a0] ref 6 overflow
  
  [h264 @ 0x37a55a0] error while decoding MB 3 1
  
  [h264 @ 0x37a55a0] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x3789aa0] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x36b7a80] ref 5 overflow
  
  [h264 @ 0x36b7a80] error while decoding MB 4 1
  
  [h264 @ 0x36b7a80] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x36920e0] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame

• Quick stream from file which exists

  4 mai 2017, par parsa

  I implement live streaming from mp4 video file which exists on the path with ffmpeg under hls format.
  When my video file have the quality greater than hd720 , in encoding there are so many delays for creating .ts fragments.
  I mean the .ts fragments slowly produced on my path,and because of it I have so many delays in showing the stream.
  Here is my ffmpeg code for streaming :

  ffmpeg -re -i 123.mp4 -s cga -f hls -hls_list_size 0 -c:v libx264 -c:a aac 200p/out.m3u8 
  
                -s nhd -f hls -hls_list_size 0 -c:v libx264 -c:a aac 360p/out.m3u8 
  
                -s hd480 -f hls -hls_list_size 0 -c:v libx264 -c:a aac 480p/out.m3u8 
  
                -s hd720 -f hls -hls_list_size 0 -c:v libx264 -c:a aac 720p/out.m3u8
  
                -s hd1080 -f hls -hls_list_size 0 -c:v libx264 -c:a aac 1080p/out.m3u8

  And here is the console output :

      ffmpeg -re -i ../files/412-887123464/video/412-887123464.mp4 -s cga -f hls -hls_list_size 0 -c:v libx264 -c:a aac ../fil
  
          es/412-887123464/video/200p/out.m3u8  -s nhd -f hls -hls_list_size 0 -c:v libx264 -c:a aac ../files/412-887123464/video/360p/out.m3u8 -s hd480 -f hls -
  
          hls_list_size 0 -c:v libx264 -c:a aac ../files/412-887123464/video/480p/out.m3u8 -s hd720 -f hls -hls_list_size 0 -c:v libx264 -c:a aac ../files/412-88
  
          7123464/video/720p/out.m3u8 -s hd1080 -f hls -hls_list_size 0 -c:v libx264 -c:a aac ../files/412-887123464/video/1080p/out.m3u8
  
          ffmpeg version N-82225-gb4e9252 Copyright (c) 2000-2016 the FFmpeg developers
  
            built with gcc 5.4.0 (GCC)
  
            configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --e
  
          nable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcac
  
          a --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-lib
  
          opencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr
  
           --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwa
  
          vpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zl
  
          ib
  
            libavutil      55. 35.100 / 55. 35.100
  
            libavcodec     57. 66.101 / 57. 66.101
  
            libavformat    57. 57.100 / 57. 57.100
  
            libavdevice    57.  2.100 / 57.  2.100
  
            libavfilter     6. 66.100 /  6. 66.100
  
            libswscale      4.  3.100 /  4.  3.100
  
            libswresample   2.  4.100 /  2.  4.100
  
            libpostproc    54.  2.100 / 54.  2.100
  
          Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../files/412-887123464/video/412-887123464.mp4':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.31.100
  
            Duration: 00:05:04.07, start: 0.000000, bitrate: 3108 kb/s
  
              Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 2976 kb/s, 25 fps, 25 tbr, 90k tbn, 50
  
          tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
              Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
          [libx264 @ 0000000001c53f00] using SAR=10/9
  
          [libx264 @ 0000000001c53f00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
          [libx264 @ 0000000001c53f00] profile High, level 1.3
  
          Output #0, hls, to '../files/412-887123464/video/200p/out.m3u8':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.57.100
  
              Stream #0:0(und): Video: h264 (libx264), yuv420p, 320x200 [SAR 10:9 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
                encoder         : Lavc57.66.101 libx264
  
              Side data:
  
                cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
              Stream #0:1(und): Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
                encoder         : Lavc57.66.101 aac
  
          [libx264 @ 0000000001f87180] using SAR=1/1
  
          [libx264 @ 0000000001f87180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
          [libx264 @ 0000000001f87180] profile High, level 3.0
  
          Output #1, hls, to '../files/412-887123464/video/360p/out.m3u8':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.57.100
  
              Stream #1:0(und): Video: h264 (libx264), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
                encoder         : Lavc57.66.101 libx264
  
              Side data:
  
                cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
              Stream #1:1(und): Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
                encoder         : Lavc57.66.101 aac
  
          [libx264 @ 0000000001c55ba0] using SAR=640/639
  
          [libx264 @ 0000000001c55ba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
          [libx264 @ 0000000001c55ba0] profile High, level 3.0
  
          Output #2, hls, to '../files/412-887123464/video/480p/out.m3u8':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.57.100
  
              Stream #2:0(und): Video: h264 (libx264), yuv420p, 852x480 [SAR 640:639 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
                encoder         : Lavc57.66.101 libx264
  
              Side data:
  
                cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
              Stream #2:1(und): Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
                encoder         : Lavc57.66.101 aac
  
          [libx264 @ 0000000001ca0220] using SAR=1/1
  
          [libx264 @ 0000000001ca0220] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
          [libx264 @ 0000000001ca0220] profile High, level 3.1
  
          Output #3, hls, to '../files/412-887123464/video/720p/out.m3u8':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.57.100
  
              Stream #3:0(und): Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
                encoder         : Lavc57.66.101 libx264
  
              Side data:
  
                cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
              Stream #3:1(und): Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
                encoder         : Lavc57.66.101 aac
  
          [libx264 @ 0000000001ca23e0] using SAR=1/1
  
          [libx264 @ 0000000001ca23e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
          [libx264 @ 0000000001ca23e0] profile High, level 4.0
  
          Output #4, hls, to '../files/412-887123464/video/1080p/out.m3u8':
  
            Metadata:
  
              major_brand     : isom
  
              minor_version   : 512
  
              compatible_brands: isomiso2avc1mp41
  
              encoder         : Lavf57.57.100
  
              Stream #4:0(und): Video: h264 (libx264), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
  
              Metadata:
  
                handler_name    : VideoHandler
  
                encoder         : Lavc57.66.101 libx264
  
              Side data:
  
                cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
              Stream #4:1(und): Audio: aac (LC), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
              Metadata:
  
                handler_name    : SoundHandler
  
                encoder         : Lavc57.66.101 aac
  
          Stream mapping:
  
            Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
            Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
            Stream #0:0 -> #1:0 (h264 (native) -> h264 (libx264))
  
            Stream #0:1 -> #1:1 (aac (native) -> aac (native))
  
            Stream #0:0 -> #2:0 (h264 (native) -> h264 (libx264))
  
            Stream #0:1 -> #2:1 (aac (native) -> aac (native))
  
            Stream #0:0 -> #3:0 (h264 (native) -> h264 (libx264))
  
            Stream #0:1 -> #3:1 (aac (native) -> aac (native))
  
            Stream #0:0 -> #4:0 (h264 (native) -> h264 (libx264))
  
            Stream #0:1 -> #4:1 (aac (native) -> aac (native))
  
          Press [q] to stop, [?] for help
  
  frame= 7600 fps= 21 q=-1.0 Lq=-1.0 q=-1.0 q=-1.0 q=-1.0 size=N/A time=00:05:04.06 bitrate=N/A speed=0.835x
  
  video:294980kB audio:23995kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  [libx264 @ 0000000001d33f00] frame I:33    Avg QP:19.93  size: 11412
  
  [libx264 @ 0000000001d33f00] frame P:2281  Avg QP:23.72  size:  3112
  
  [libx264 @ 0000000001d33f00] frame B:5286  Avg QP:28.59  size:   446
  
  [libx264 @ 0000000001d33f00] consecutive B-frames:  4.3%  6.9%  5.9% 82.8%
  
  [libx264 @ 0000000001d33f00] mb I  I16..4: 12.9% 42.9% 44.2%
  
  [libx264 @ 0000000001d33f00] mb P  I16..4:  1.3%  4.4%  2.3%  P16..4: 41.4% 22.0% 15.5%  0.0%  0.0%    skip:13.1%
  
  [libx264 @ 0000000001d33f00] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 35.2%  5.9%  2.1%  direct: 3.0%  skip:53.6%  L0:35.3% L1:48.0% BI:16.8%
  
  [libx264 @ 0000000001d33f00] 8x8 transform intra:53.4% inter:57.9%
  
  [libx264 @ 0000000001d33f00] coded y,uvDC,uvAC intra: 70.6% 89.7% 67.6% inter: 18.1% 20.3% 7.2%
  
  [libx264 @ 0000000001d33f00] i16 v,h,dc,p: 24% 24%  6% 45%
  
  [libx264 @ 0000000001d33f00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 14% 19%  5%  5%  7%  5% 10%  7%
  
  [libx264 @ 0000000001d33f00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 15% 15%  6%  6%  7%  6%  8%  6%
  
  [libx264 @ 0000000001d33f00] i8c dc,h,v,p: 42% 17% 28% 14%
  
  [libx264 @ 0000000001d33f00] Weighted P-Frames: Y:26.3% UV:12.9%
  
  [libx264 @ 0000000001d33f00] ref P L0: 58.7% 24.7% 10.9%  4.8%  1.0%
  
  [libx264 @ 0000000001d33f00] ref B L0: 92.6%  5.8%  1.6%
  
  [libx264 @ 0000000001d33f00] ref B L1: 96.3%  3.7%
  
  [libx264 @ 0000000001d33f00] kb/s:258.68
  
  [aac @ 00000000005fc9e0] Qavg: 686.637
  
  [libx264 @ 0000000002017180] frame I:31    Avg QP:19.77  size: 29228
  
  [libx264 @ 0000000002017180] frame P:2040  Avg QP:23.08  size:  8765
  
  [libx264 @ 0000000002017180] frame B:5529  Avg QP:27.28  size:  1471
  
  [libx264 @ 0000000002017180] consecutive B-frames:  1.3%  4.2%  2.4% 92.1%
  
  [libx264 @ 0000000002017180] mb I  I16..4:  8.3% 58.8% 32.9%
  
  [libx264 @ 0000000002017180] mb P  I16..4:  3.2%  9.5%  2.6%  P16..4: 41.5% 19.5% 11.4%  0.0%  0.0%    skip:12.2%
  
  [libx264 @ 0000000002017180] mb B  I16..4:  0.2%  0.3%  0.1%  B16..8: 34.5%  5.8%  1.7%  direct: 2.7%  skip:54.7%  L0:35.9% L1:49.5% BI:14.6%
  
  [libx264 @ 0000000002017180] 8x8 transform intra:61.2% inter:67.3%
  
  [libx264 @ 0000000002017180] coded y,uvDC,uvAC intra: 55.8% 84.8% 51.3% inter: 15.6% 19.3% 3.9%
  
  [libx264 @ 0000000002017180] i16 v,h,dc,p: 24% 29%  8% 39%
  
  [libx264 @ 0000000002017180] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 17% 21%  5%  5%  7%  5%  8%  6%
  
  [libx264 @ 0000000002017180] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 15%  6%  7%  7%  6%  7%  5%
  
  [libx264 @ 0000000002017180] i8c dc,h,v,p: 42% 18% 27% 13%
  
  [libx264 @ 0000000002017180] Weighted P-Frames: Y:22.3% UV:12.2%
  
  [libx264 @ 0000000002017180] ref P L0: 58.5% 23.4% 12.2%  5.2%  0.8%
  
  [libx264 @ 0000000002017180] ref B L0: 93.1%  5.3%  1.6%
  
  [libx264 @ 0000000002017180] ref B L1: 96.6%  3.4%
  
  [libx264 @ 0000000002017180] kb/s:708.47
  
  [aac @ 0000000001d35200] Qavg: 686.637
  
  [libx264 @ 0000000001d35ba0] frame I:31    Avg QP:19.63  size: 41522
  
  [libx264 @ 0000000001d35ba0] frame P:2025  Avg QP:22.86  size: 13415
  
  [libx264 @ 0000000001d35ba0] frame B:5544  Avg QP:26.52  size:  2471
  
  [libx264 @ 0000000001d35ba0] consecutive B-frames:  1.1%  3.9%  2.8% 92.2%
  
  [libx264 @ 0000000001d35ba0] mb I  I16..4: 10.6% 62.4% 26.9%
  
  [libx264 @ 0000000001d35ba0] mb P  I16..4:  4.7% 12.4%  2.6%  P16..4: 41.1% 17.8%  9.4%  0.0%  0.0%    skip:11.9%
  
  [libx264 @ 0000000001d35ba0] mb B  I16..4:  0.3%  0.5%  0.1%  B16..8: 34.0%  5.5%  1.4%  direct: 2.9%  skip:55.3%  L0:36.7% L1:50.2% BI:13.1%
  
  [libx264 @ 0000000001d35ba0] 8x8 transform intra:61.7% inter:71.6%
  
  [libx264 @ 0000000001d35ba0] coded y,uvDC,uvAC intra: 48.0% 81.9% 43.3% inter: 14.7% 19.7% 2.6%
  
  [libx264 @ 0000000001d35ba0] i16 v,h,dc,p: 27% 29%  9% 35%
  
  [libx264 @ 0000000001d35ba0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 19% 22%  5%  5%  6%  5%  7%  5%
  
  [libx264 @ 0000000001d35ba0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 25% 16%  5%  6%  7%  6%  6%  4%
  
  [libx264 @ 0000000001d35ba0] i8c dc,h,v,p: 42% 20% 26% 12%
  
  [libx264 @ 0000000001d35ba0] Weighted P-Frames: Y:18.1% UV:10.8%
  
  [libx264 @ 0000000001d35ba0] ref P L0: 59.5% 22.6% 12.6%  4.8%  0.5%
  
  [libx264 @ 0000000001d35ba0] ref B L0: 93.6%  5.0%  1.4%
  
  [libx264 @ 0000000001d35ba0] ref B L1: 97.1%  2.9%
  
  [libx264 @ 0000000001d35ba0] kb/s:1109.23
  
  [aac @ 0000000001d828a0] Qavg: 686.637
  
  [libx264 @ 0000000001d7f880] frame I:32    Avg QP:19.45  size: 64737
  
  [libx264 @ 0000000001d7f880] frame P:2104  Avg QP:22.44  size: 23985
  
  [libx264 @ 0000000001d7f880] frame B:5464  Avg QP:25.65  size:  4999
  
  [libx264 @ 0000000001d7f880] consecutive B-frames:  1.2%  7.7%  3.2% 87.8%
  
  [libx264 @ 0000000001d7f880] mb I  I16..4: 12.5% 70.0% 17.5%
  
  [libx264 @ 0000000001d7f880] mb P  I16..4:  6.7% 17.1%  1.8%  P16..4: 40.7% 14.9%  6.6%  0.0%  0.0%    skip:12.2%
  
  [libx264 @ 0000000001d7f880] mb B  I16..4:  0.6%  0.9%  0.1%  B16..8: 32.5%  4.7%  1.0%  direct: 2.9%  skip:57.4%  L0:37.6% L1:51.6% BI:10.8%
  
  [libx264 @ 0000000001d7f880] 8x8 transform intra:65.7% inter:77.5%
  
  [libx264 @ 0000000001d7f880] coded y,uvDC,uvAC intra: 39.5% 76.4% 32.4% inter: 13.2% 19.8% 1.5%
  
  [libx264 @ 0000000001d7f880] i16 v,h,dc,p: 32% 27% 10% 31%
  
  [libx264 @ 0000000001d7f880] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 18% 23%  4%  5%  5%  4%  5%  4%
  
  [libx264 @ 0000000001d7f880] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 20% 15%  5%  7%  7%  6%  6%  4%
  
  [libx264 @ 0000000001d7f880] i8c dc,h,v,p: 42% 19% 27% 12%
  
  [libx264 @ 0000000001d7f880] Weighted P-Frames: Y:10.5% UV:6.7%
  
  [libx264 @ 0000000001d7f880] ref P L0: 62.3% 20.4% 12.7%  4.3%  0.3%
  
  [libx264 @ 0000000001d7f880] ref B L0: 93.4%  5.2%  1.4%
  
  [libx264 @ 0000000001d7f880] ref B L1: 97.7%  2.3%
  
  [libx264 @ 0000000001d7f880] kb/s:2101.26
  
  [aac @ 0000000001d81560] Qavg: 686.637
  
  [libx264 @ 0000000001d7fd60] frame I:33    Avg QP:18.36  size: 98904
  
  [libx264 @ 0000000001d7fd60] frame P:3180  Avg QP:21.67  size: 33377
  
  [libx264 @ 0000000001d7fd60] frame B:4387  Avg QP:24.61  size:  7729
  
  [libx264 @ 0000000001d7fd60] consecutive B-frames:  2.7% 55.9% 15.6% 25.9%
  
  [libx264 @ 0000000001d7fd60] mb I  I16..4: 22.4% 66.9% 10.7%
  
  [libx264 @ 0000000001d7fd60] mb P  I16..4:  9.9% 17.8%  0.7%  P16..4: 40.4%  9.2%  3.0%  0.0%  0.0%    skip:19.0%
  
  [libx264 @ 0000000001d7fd60] mb B  I16..4:  0.8%  1.3%  0.1%  B16..8: 30.2%  2.6%  0.4%  direct: 1.7%  skip:63.0%  L0:38.1% L1:54.9% BI: 7.0%
  
  [libx264 @ 0000000001d7fd60] 8x8 transform intra:62.5% inter:82.9%
  
  [libx264 @ 0000000001d7fd60] coded y,uvDC,uvAC intra: 25.4% 59.5% 11.6% inter: 9.6% 16.3% 0.7%
  
  [libx264 @ 0000000001d7fd60] i16 v,h,dc,p: 33% 28% 15% 24%
  
  [libx264 @ 0000000001d7fd60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 20% 29%  3%  3%  4%  3%  3%  3%
  
  [libx264 @ 0000000001d7fd60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 25% 16%  4%  6%  6%  5%  5%  4%
  
  [libx264 @ 0000000001d7fd60] i8c dc,h,v,p: 39% 21% 28% 12%
  
  [libx264 @ 0000000001d7fd60] Weighted P-Frames: Y:5.7% UV:3.6%
  
  [libx264 @ 0000000001d7fd60] ref P L0: 70.0% 18.6%  8.3%  3.1%  0.1%
  
  [libx264 @ 0000000001d7fd60] ref B L0: 91.4%  7.6%  1.0%
  
  [libx264 @ 0000000001d7fd60] ref B L1: 99.0%  1.0%
  
  [libx264 @ 0000000001d7fd60] kb/s:3771.31
  
  [aac @ 0000000001d823e0] Qavg: 686.637

  But I don’t have any problem for streaming files with creating resolutions from a file which have lower orginal quality than hd1080
  What I can to do ?

• FFMPEG equalizer clipping audio despite low volume

  23 juillet 2023, par Tom

  I'm using ffmpeg to equalise audio transferred from historic gramophone records, using standard eqs of the era.

  


  The frequency and gain values are taken from the graphic eq settings listed on the Audacity website - https://plugins.audacityteam.org/additional-resources/eq-curves/playback-equalization-for-78-rpm-shellacs-and-early-33-lps

  


  An example of the Blumlien300 curve here - https://2850314611-files.gitbook.io/ /files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FklCVENFte0GRy5IqVz0W%2Fuploads%2FJHS6Mv121GX1h898xy4K%2FBlumlein300_3.2.2.txt?alt=media&token=8d04df05-366d-47f8-8c82-149fa5eda59a

  


  The audio file I'm testing with has a digital peak of -35db, the highest gain value applied on this eq is 17db. When I run the ffmpeg command though, it reports the audio is clipping and the result is a horribly distorted recording.

  


  Can anyone advise why this is happening ? I run the same file through the same eq settings in Audacity and the result is as expected.

  


  set eq="equalizer=f=22050:g=-0.4,equalizer=f=21203.720228928225:g=-0.4,equalizer=f=20389.920705063967:g=-0.4,equalizer=f=19607.354835383569:g=-0.4,equalizer=f=18854.823871147240:g=-0.4,equalizer=f=18131.175071633737:g=-0.4,equalizer=f=17435.299938351014:g=-0.4,equalizer=f=16766.132517017904:g=-0.4,equalizer=f=16122.647764715837:g=-0.4,equalizer=f=15503.859979709296:g=-0.4,equalizer=f=14908.821291529812:g=-0.4,equalizer=f=14336.620209010769:g=-0.4,equalizer=f=13786.380224048187:g=-0.4,equalizer=f=13257.258468950000:g=-0.4,equalizer=f=12748.444425315412:g=-0.4,equalizer=f=12259.158682468413:g=-0.4,equalizer=f=11788.651743541806:g=-0.4,equalizer=f=11336.202877384472:g=-0.4,equalizer=f=10901.119014532051:g=-0.4,equalizer=f=10482.733685550458:g=-0.4,equalizer=f=10080.406000125797:g=-0.4,equalizer=f=9693.519665336817:g=-0.4,equalizer=f=9321.482041606178:g=-0.4,equalizer=f=8963.723234884175:g=-0.4,equalizer=f=8619.695223674737:g=-0.4,equalizer=f=8288.871019565895:g=-0.4,equalizer=f=7970.743859979441:g=-0.4,equalizer=f=7664.826431902562:g=-0.4,equalizer=f=7370.650125412990:g=-0.4,equalizer=f=7087.764315853595:g=-0.4,equalizer=f=6815.735673557399:g=-0.4,equalizer=f=6554.147500065165:g=-0.4,equalizer=f=6302.599089819104:g=-0.4,equalizer=f=6060.705116354743:g=-0.4,equalizer=f=5828.095042050793:g=-0.4,equalizer=f=5604.412550532827:g=-0.4,equalizer=f=5389.315000861326:g=-0.4,equalizer=f=5182.472902668021:g=-0.394052055589,equalizer=f=4983.569411436476:g=-0.386751590389,equalizer=f=4792.299843153906:g=-0.376185664074,equalizer=f=4608.371207590573:g=-0.362543760251,equalizer=f=4431.501759492006:g=-0.345993198097,equalizer=f=4261.420566996452:g=-0.330710126890,equalizer=f=4097.867096616487:g=-0.318503033191,equalizer=f=3940.590814149046:g=-0.309564283335,equalizer=f=3789.350800902538:g=-0.303741189604,equalizer=f=3643.915384653179:g=-0.300601888512,equalizer=f=3504.061784765236:g=-0.3,equalizer=f=3369.575770931567:g=-0.3,equalizer=f=3240.251335011708:g=-0.3,equalizer=f=3115.890375464830:g=-0.3,equalizer=f=2996.302393894170:g=-0.3,equalizer=f=2881.304203238093:g=-0.3,equalizer=f=2770.719647160795:g=-0.3,equalizer=f=2664.379330212802:g=-0.3,equalizer=f=2562.120358347913:g=-0.3,equalizer=f=2463.786089399117:g=-0.3,equalizer=f=2369.225893131248:g=-0.3,equalizer=f=2278.294920502843:g=-0.3,equalizer=f=2190.853881783698:g=-0.3,equalizer=f=2106.768833188346:g=-0.296437432785,equalizer=f=2025.910971698469:g=-0.290217913930,equalizer=f=1948.156437760116:g=-0.280922418484,equalizer=f=1873.386125553329:g=-0.268550946447,equalizer=f=1801.485500543704:g=-0.253103497820,equalizer=f=1732.344424036255:g=-0.235614749092,equalizer=f=1665.856984462975:g=-0.218076286078,equalizer=f=1601.921335145533:g=-0.200537822606,equalizer=f=1540.439538284674:g=-0.184632657170,equalizer=f=1481.317414937308:g=-0.168779161348,equalizer=f=1424.464400751469:g=-0.152925665153,equalizer=f=1369.793407238189:g=-0.137072168707,equalizer=f=1317.220688367753:g=-0.121218672255,equalizer=f=1266.665712285991:g=-0.105365175802,equalizer=f=1218.051037954117:g=-0.088396941462,equalizer=f=1171.302196523118:g=-0.070858476440,equalizer=f=1126.347577261013:g=-0.053320011417,equalizer=f=1083.118317858216:g=-0.034770724190,equalizer=f=1041.548198942992:g=-0.013200571808,equalizer=f=1001.573542645411:g=0.011445558081,equalizer=f=963.133115054414:g=0.039167665478,equalizer=f=926.168032418592:g=0.069965750383,equalizer=f=890.621670946974:g=0.103839812794,equalizer=f=856.439580071665:g=0.140789852714,equalizer=f=823.569399039473:g=0.180815870141,equalizer=f=791.960776704742:g=0.223158863450,equalizer=f=761.565294400547:g=0.266149082252,equalizer=f=732.336391770094:g=0.311823093692,equalizer=f=704.229295444710:g=0.360237839089,equalizer=f=677.200950459179:g=0.413174176689,equalizer=f=651.209954299352:g=0.471478099167,equalizer=f=626.216493481026:g=0.535493496953,equalizer=f=602.182282562909:g=0.606978871276,equalizer=f=579.070505500287:g=0.684199304160,equalizer=f=556.845759249530:g=0.767096732395,equalizer=f=535.473999537060:g=0.853776460170,equalizer=f=514.922488709709:g=0.943323717867,equalizer=f=495.159745586582:g=1.036571598687,equalizer=f=476.155497235608:g=1.135335711982,equalizer=f=457.880632600910:g=1.237175803242,equalizer=f=440.307157909949:g=1.342335109599,equalizer=f=423.408153792158:g=1.453088412615,equalizer=f=407.157734043353:g=1.569993670188,equalizer=f=391.531005972773:g=1.688508164136,equalizer=f=376.504032271996:g=1.808802987893,equalizer=f=362.053794347337:g=1.934465396527,equalizer=f=348.158157059540:g=2.065823830001,equalizer=f=334.795834816768:g=2.204891058267,equalizer=f=321.946358968944:g=2.352009664049,equalizer=f=309.590046453497:g=2.509552803849,equalizer=f=297.707969644483:g=2.678532979186,equalizer=f=286.281927358906:g=2.856115742576,equalizer=f=275.294416975809:g=3.041612670003,equalizer=f=264.728607625441:g=3.230723044219,equalizer=f=254.568314407418:g=3.422700948357,equalizer=f=244.797973598401:g=3.621312762050,equalizer=f=235.402618811295:g=3.826195809769,equalizer=f=226.367858069467:g=4.034154835453,equalizer=f=217.679851760848:g=4.246639157749,equalizer=f=209.325291438168:g=4.468048945659,equalizer=f=201.291379432825:g=4.698686666092,equalizer=f=193.565809251186:g=4.938552319047,equalizer=f=186.136746723276:g=5.187645904525,equalizer=f=178.992811874976:g=5.445967422525,equalizer=f=172.123061495972:g=5.712025685327,equalizer=f=165.516972376744:g=5.984236264250,equalizer=f=159.164425188922:g=6.258981796419,equalizer=f=153.055688984312:g=6.515823590632,equalizer=f=147.181406288853:g=6.777692051390,equalizer=f=141.532578768664:g=7.044587178695,equalizer=f=136.100553446236:g=7.314095599483,equalizer=f=130.877009445637:g=7.583605034445,equalizer=f=125.853945246444:g=7.853114469407,equalizer=f=121.023666426868:g=8.146285201135,equalizer=f=116.378773877299:g=8.444439101287,equalizer=f=111.912152466211:g=8.742593001439,equalizer=f=107.616960141075:g=9.042209423688,equalizer=f=103.486617447577:g=9.344900874707,equalizer=f=99.514797451091:g=9.650668303691,equalizer=f=95.695416044961:g=9.959511710641,equalizer=f=92.022622630759:g=10.271431095557,equalizer=f=88.490791156230:g=10.586541422511,equalizer=f=85.094511497198:g=10.906991735356,equalizer=f=81.828581170245:g=11.233594002758,equalizer=f=78.687997363448:g=11.556996378650,equalizer=f=75.667949272979:g=11.873211536187,equalizer=f=72.763810733831:g=12.194794278600,equalizer=f=69.971133133372:g=12.521192148224,equalizer=f=67.285638596875:g=12.846501740168,equalizer=f=64.703213434600:g=13.169127539473,equalizer=f=62.219901840358:g=13.492484068742,equalizer=f=59.831899831942:g=13.820346094285,equalizer=f=57.535549424116:g=14.145340590334,equalizer=f=55.327333025244:g=14.467659297988,equalizer=f=53.203868048980:g=14.789401139821,equalizer=f=51.161901732761:g=15.111142981226,equalizer=f=49.198306155165:g=15.437629968456,equalizer=f=47.310073444503:g=15.770860796927,equalizer=f=45.494311171305:g=16.104091624940,equalizer=f=43.748237917649:g=16.412536097232,equalizer=f=42.069179016527:g=16.579143834849,equalizer=f=40.454562454745:g=16.588876722789,equalizer=f=38.901914933067:g=16.461103901687,equalizer=f=37.408858077565:g=16.215674576171,equalizer=f=35.973104796389:g=15.850016386783,equalizer=f=34.592455776352:g=15.350234288456,equalizer=f=33.264796113983:g=14.615823142814,equalizer=f=31.988092075884:g=13.626809695512,equalizer=f=30.760387983412:g=12.332756508563,equalizer=f=29.579803216941:g=10.518513413063,equalizer=f=28.444529335092:g=8.346792732977,equalizer=f=27.352827304528:g=5.833681758551,equalizer=f=26.303024836072:g=3.097942665008,equalizer=f=25.293513823067:g=0.163604913582,equalizer=f=24.322747878043:g=-2.887748621210,equalizer=f=23.389239963935:g=-6.091081601564,equalizer=f=22.491560116216:g=-9.478973229620,equalizer=f=21.628333252442:g=-12.539218030638,equalizer=f=20.798237065887:g=-14.384804507659,equalizer=f=20:g=-15"
ffmpeg -i "File.wav" -af %eq% -c:a pcm_s24le out.wav