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• 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 to create an MPEG-DASH stream with VP8

  24 avril 2017, par Kenneth Worden

  I’m trying to use FFMPEG to stream a live video feed from my webcam /dev/video0. Following scattered tutorials and scarce documentation (is this a known problem for the encoding community ?) I arrived at the following bash script :

  #!/bin/bash
  
  
  
  ffmpeg \
  
      -y \
  
      -f v4l2 \
  
          -i /dev/video0 \
  
          -s 640x480 \
  
          -input_format mjpeg \
  
          -r 24 \
  
      -map 0:0 \
  
      -pix_fmt yuv420p \
  
      -codec:v libvpx \
  
          -s 640x480 \
  
          -threads 4 \
  
          -b:v 50k \
  
          -tile-columns 4 \
  
          -frame-parallel 1 \
  
          -keyint_min 24 -g 24 \
  
      -f webm_chunk \
  
          -header "stream.hdr" \
  
          -chunk_start_index 1 \
  
      stream_%d.chk &
  
  
  
  sleep 2
  
  
  
  ffmpeg \
  
      -f webm_dash_manifest -live 1 \
  
      -i stream.hdr \
  
      -c copy \
  
      -map 0 \
  
      -f webm_dash_manifest -live 1 \
  
          -adaptation_sets "id=0,streams=0" \
  
          -chunk_start_index 1 \
  
          -chunk_duration_ms 1000 \
  
          -time_shift_buffer_depth 30000 \
  
          -minimum_update_period 60000 \
  
      stream_manifest.mpd

  When I run this script, my webcam light turns on, the stream.hdr and stream_manifest.mpd files are written, and chunks start to be created (i.e. stream_1.chk, stream_2.chk, etc...). However, FFMPEG throws the following error :

  Could not write header for output file #0 (incorrect codec parameters
   ?) : Invalid data found when processing input

  I will explain what I think I am doing with this script, and hopefully this will expose any errors in my thinking.

  First, we invoke FFMPEG to use Video for Linux 2 (v4l2) to read from my webcam (/dev/video0) of a resolution 640x480. The input format is mjpeg with a framerate of 24fps.

  I then declare that FFMPEG should "map" (copy) the video stream output by v4l2 to a file. I specify the pixel format (YUV420P) and use libvpx (VP8 encoding) to encode the video stream. I set the size to be 640x480, use 4 threads, set the bitrate to be 50kbps, do some magic with tile-columns and frame-parallel options, and set the I-frames to be 24 frames apart.

  I then create a stream.hdr file. The starting index is 1. This command continues to run infinitely until I kill it, grabbing new video from my webcam and outputting it into chunks.

  I then sleep for 2 seconds to give the previous command time to generate a header file.

  And that’s really it. The next invocation of FFMPEG simply creates the MPEG-DASH manifest file given the header generated in the previous step.

  So what’s going on ? Why can I not view the video in a web browser (I’m using Dash.js) ? I serve the manifest, header, and chunks on a Node.js server so that trivial issue is not the problem.

  ---

  Edit : Here is my full console output.

  ffmpeg version 3.0.7-0ubuntu0.16.10.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.2.0 (Ubuntu 6.2.0-5ubuntu12) 20161005
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.16.10.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-librtmp --enable-libschroedinger --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-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-chromaprint --enable-libx264
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libavresample   3.  0.  0 /  3.  0.  0
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [video4linux2,v4l2 @ 0x55847e244ea0] The driver changed the time per frame from 1/24 to 1/30
  
  [mjpeg @ 0x55847e245c00] Changing bps to 8
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 64305.102081, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 640x480, -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  Codec AVOption frame-parallel (Enable frame parallel decodability features) specified for output file #0 (stream_%d.chk) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
  
  Codec AVOption tile-columns (Number of tile columns to use, log2) specified for output file #0 (stream_%d.chk) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
  
  [swscaler @ 0x55847e24b720] deprecated pixel format used, make sure you did set range correctly
  
  [libvpx @ 0x55847e248a20] v1.5.0
  
  Output #0, webm_chunk, to 'stream_%d.chk':
  
    Metadata:
  
      encoder         : Lavf57.25.100
  
      Stream #0:0: Video: vp8 (libvpx), yuv420p, 640x480, q=-1--1, 50 kb/s, 30 fps, 30 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.24.102 libvpx
  
      Side data:
  
        unknown side data type 10 (24 bytes)
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> vp8 (libvpx))
  
  Press [q] to stop, [?] for help
  
  frame=   21 fps=0.0 q=0.0 size=N/A time=00:00:00.70 bitrate=N/A dup=5 drop=frame=   36 fps= 35 q=0.0 size=N/A time=00:00:01.20 bitrate=N/A dup=5 drop=frame=   51 fps= 33 q=0.0 size=N/A time=00:00:01.70 bitrate=N/A dup=5 drop=ffmpeg version 3.0.7-0ubuntu0.16.10.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.2.0 (Ubuntu 6.2.0-5ubuntu12) 20161005
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.16.10.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-librtmp --enable-libschroedinger --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-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-chromaprint --enable-libx264
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libavresample   3.  0.  0 /  3.  0.  0
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, webm_dash_manifest, from 'stream.hdr':
  
    Metadata:
  
      encoder         : Lavf57.25.100
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
  
      Metadata:
  
        webm_dash_manifest_file_name: stream.hdr
  
        webm_dash_manifest_track_number: 1
  
  Output #0, webm_dash_manifest, to 'stream_manifest.mpd':
  
    Metadata:
  
      encoder         : Lavf57.25.100
  
      Stream #0:0: Video: vp8, yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
  
      Metadata:
  
        webm_dash_manifest_file_name: stream.hdr
  
        webm_dash_manifest_track_number: 1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input
  
  frame=   67 fps= 33 q=0.0 size
  
  frame=   82 fps= 32 q=0.0 size=N/A time=00:00:02.73 bitrate=N/A dup=5 drop=
  
  frame=   97 fps= 32 q=0.0 size=N/A time=00:00:03.23 bitrate=N/A dup=5 drop=
  
  frame=  112 fps= 32 q=0.0 size=N/A time=00:00:03.73 bitrate=N/A dup=5 ...

• FFmpeg rtp streaming opus file problems

  22 avril 2017, par Yuriy Aizenberg

  i have the next situation.

  1. Have file on remote VPS server.
  2. I want that this file (opus codec) can be accessible through RTP on my android phone.

  3. I tried ffmpeg with next command :

     ffmpeg -ar 44800 -i bon_jovi_loverboy.opus -acodec libopus -ac 1 -ab 96k -vn -f rtp rtp://127.0.0.1:5004 -loglevel 56

  But got next error :

  bon_jovi_loverboy.opus: Invalid data found when processing input

  Full log :

  root@cs82932 :/home/rstream/rtstream/src# ffmpeg -ar 44800 -i bon_jovi_loverboy.opus -acodec libopus -ac 1 -ab 96k -vn -f rtp rtp ://127.0.0.1:5004 -loglevel 56
  ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1 16.04.4) 20160609
  configuration : —prefix=/usr —extra-version=0ubuntu0.16.04.1 —build-suffix=-ffmpeg —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —cc=cc —cxx=g++ —enable-gpl —enable-shared —disable-stripping —disable-decoder=libopenjpeg —disable-decoder=libschroedinger —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-libmodplug —enable-libmp3lame —enable-libopenjpeg —enable-libopus —enable-libpulse —enable-librtmp —enable-libschroedinger —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-libxvid —enable-libzvbi —enable-openal —enable-opengl —enable-x11grab —enable-libdc1394 —enable-libiec61883 —enable-libzmq —enable-frei0r —enable-libx264 —enable-libopencv
  libavutil 54. 31.100 / 54. 31.100
  libavcodec 56. 60.100 / 56. 60.100
  libavformat 56. 40.101 / 56. 40.101
  libavdevice 56. 4.100 / 56. 4.100
  libavfilter 5. 40.101 / 5. 40.101
  libavresample 2. 1. 0 / 2. 1. 0
  libswscale 3. 1.101 / 3. 1.101
  libswresample 1. 2.101 / 1. 2.101
  libpostproc 53. 3.100 / 53. 3.100
  Splitting the commandline.
  Reading option ’-ar’ ... matched as option ’ar’ (set audio sampling rate (in Hz)) with argument ’44800’.

  Reading option ’-i’ ... matched as input url with argument ’bon_jovi_loverboy.opus’.

  Reading option ’-acodec’ ... matched as option ’acodec’ (force audio codec (’copy’ to copy stream)) with argument ’libopus’.

  Reading option ’-ac’ ... matched as option ’ac’ (set number of audio channels) with argument ’1’.

  Reading option ’-ab’ ... matched as option ’ab’ (audio bitrate (please use -b:a)) with argument ’96k’.

  Reading option ’-vn’ ... matched as option ’vn’ (disable video) with argument ’1’.

  Reading option ’-f’ ... matched as option ’f’ (force format) with argument ’rtp’.

  Reading option ’rtp ://127.0.0.1:5004’ ... matched as output url.

  Reading option ’-loglevel’ ... matched as option ’loglevel’ (set logging level) with argument ’56’.

  Finished splitting the commandline.
  Parsing a group of options : global .
  Applying option loglevel (set logging level) with argument 56.

  Successfully parsed a group of options.

  Parsing a group of options : input url bon_jovi_loverboy.opus.
  Applying option ar (set audio sampling rate (in Hz)) with argument 44800.
  Successfully parsed a group of options.
  Opening an input file : bon_jovi_loverboy.opus.

  [AVIOContext @ 0x965e60] Statistics : 36389 bytes read, 0 seeks
  bon_jovi_loverboy.opus : Invalid data found when processing input

  What wrong ? Thanks

  UPD

  I update ffmpeg and streaming looks successfully.

      ffmpeg -stream_loop -1 -i 4a6u7-ptl2w.opus -acodec libopus -ac 1 -ab 
  
             96k -vn -f rtp rtp://95.213.195.192:5004/f.opus
  
  ffmpeg version 3.2.4-1~16.04.york1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Ubuntu 5.4.1-5ubuntu2~16.04.york1) 20170210
  
    configuration: --prefix=/usr --extra-version='1~16.04.york1' --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-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --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-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    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
  
  Input #0, ogg, from '4a6u7-ptl2w.opus':
  
    Duration: 00:02:34.21, start: 0.000000, bitrate: 69 kb/s
  
      Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
  
      Metadata:
  
        ENCODER         : Lavc57.77.100 libopus
  
  Output #0, rtp, to 'rtp://95.213.195.192:5004/f.opus':
  
    Metadata:
  
      encoder         : Lavf57.56.101
  
      Stream #0:0: Audio: opus (libopus), 48000 Hz, mono, flt, 96 kb/s
  
      Metadata:
  
        encoder         : Lavc57.64.101 libopus
  
  SDP:
  
  v=0
  
  o=- 0 0 IN IP4 127.0.0.1
  
  s=No Name
  
  c=IN IP4 95.213.195.192
  
  t=0 0
  
  a=tool:libavformat 57.56.101
  
  m=audio 5004 RTP/AVP 97
  
  b=AS:96
  
  a=rtpmap:97 opus/48000/2
  
  
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (opus (native) -> opus (libopus))
  
  Press [q] to stop, [?] for help
  
  size=   44893kB time=00:52:18.12 bitrate= 117.2kbits/s speed=56.5x

  But when i try to connect by rtp from local PC (VLC Player) i get the exception :

           core error: socket bind error: Cannot assign requested address
  
           core error: open of `rtp://95.213.195.192:5004/f.opus' failed

  When i try ffplay on remote pc (same where ffmpeg) :

      ffplay rtp://95.213.195.192:5004/f.opus
  
  
  
  ffplay version 3.2.4-1~16.04.york1 Copyright (c) 2003-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Ubuntu 5.4.1-5ubuntu2~16.04.york1) 20170210
  
    configuration: --prefix=/usr --extra-version='1~16.04.york1' --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-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --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-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    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
  
  Segmentation fault

  Can you help me ? Thanks

  95.213.195.192 - IP of my remote server with file