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• NGINX RTMP convert flv to hls ?

  3 mai 2016, par MandelDuck

  I have a server that takes an rtmp stream and saves it as flv.

  Web users can view the flv video in their browser, however iPhone users can’t as it is flash

  Is there away to convert the saved flv files on the fly to hls for the iPhone viewers ?

  here is my config, Webusers access the vod application

  rtmp {
  
       server {
  
               listen 1935;
  
               chunk_size 4096;
  
  
  
               application live {
  
                       live on;
  
                       record all;
  
                       record_path /videos/av;
  
                       idle_streams off;
  
               }
  
               application audio {
  
                       live on;
  
                       record audio;
  
                       record_path /videos/audio;
  
                       idle_streams off;
  
  
  
               }
  
               application vod {
  
                       play /videos/av;
  
               }
  
               application aod {
  
                       play /videos/audio;
  
               }
  
  
  
       } 
  
  }

• Reading geolocation data from a video file using FFMpeg/Xuggler

  23 décembre 2015, par agent154

  Using the MediaInfo application, I am able to see that a file taken with an iPhone 5 contains geolocation metadata, tagged both with ©xyz and com.apple.quicktime.location.ISO6709. I am not able to find any way to get this data using xuggler, however.

  Format                                   : MPEG-4
  
  Format profile                           : QuickTime
  
  Codec ID                                 : qt   0000.00 (qt  )
  
  File size                                : 7.50 MiB
  
  Duration                                 : 3s 537ms
  
  Overall bit rate                         : 17.8 Mbps
  
  Recorded date                            : 2015-12-17T14:32:23-0330
  
  Encoded date                             : UTC 2015-12-17 18:02:23
  
  Tagged date                              : UTC 2015-12-17 18:02:27
  
  Writing application                      : 8.4.1
  
  Writing library                          : Apple QuickTime
  
  Model                                    : iPhone 5
  
  ©xyz                                     : +47.5184-052.8046+133.390/
  
  Make                                     : Apple
  
  com.apple.quicktime.make                 : Apple
  
  com.apple.quicktime.creationdate         : 2015-12-17T14:32:23-0330
  
  com.apple.quicktime.location.ISO6709     : +47.5184-052.8046+133.390/
  
  com.apple.quicktime.software             : 8.4.1
  
  com.apple.quicktime.model                : iPhone 5

  As an aside, there seems to be a lot of metadata on this file that I can’t immediately find while debugging via xuggler.

  The question at Reading Geolocation from Quicktime Movies with Java (Xuggler) ? is asking the exact same question, but has no answers or comments at all, and is over 4 years old.

  Is anybody aware of a way to be able to get this data using xuggler as it is, or how I can modify the source and re-compile to make it work ? I am required to get this data for a work project. Thanks.

• ffmpeg converted x264 video shows sharply reduced color saturation

  3 novembre 2015, par xaphod

  I’m an ffmpeg noob. I did spend 30 mins googling stackoverflow though, and didn’t find an answer.

  My designer made me some videos, of animated drawings. They’re great, but huge. So I tried passing them through ffmpeg. They get 10x smaller and don’t look pixelated — great ! — but the color is greatly reduced. What’s bright red/pink in the original becomes washed out ashey-grey-red in the output, when I view it on my macbook, or in the app it’s going into (iOS — ie. on an iPhone 5S you can see the missing color). How can I get the color to stay the same(ish) ?

  ffmpeg -i original.mp4

  shows me this :

  ffmpeg version 2.8 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.0 (clang-700.0.72)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --enable-videotoolbox --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    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
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '01 Introanimation@25fps_2.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2015-10-28 22:08:44
  
    Duration: 00:00:16.00, start: 0.000000, bitrate: 1613 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 720x720, 1434 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-10-28 22:08:44
  
        handler_name    : Alias Data Handler
  
        encoder         : AVC Coding

  ... so far I tried ...

  ffmpeg -i original.mp4 -vf format=yuvj420p -color_range 2 -vcodec libx264 out.mp4

  ... and many others, but no luck.

  Original.mp4 is here : http://fuzzymunchkin.com/tmp/original.mp4

  EDIT : posting the output of a (no-parameters) conversion, as requested.

  ffmpeg -i original.mp4 out.mp4
  
  ffmpeg version 2.8 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.0 (clang-700.0.72)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --enable-videotoolbox --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    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
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'original.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2015-10-28 22:08:44
  
    Duration: 00:00:16.00, start: 0.000000, bitrate: 1613 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 720x720, 1434 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-10-28 22:08:44
  
        handler_name    : Alias Data Handler
  
        encoder         : AVC Coding
  
  [libx264 @ 0x7f8a5b80ea00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  [libx264 @ 0x7f8a5b80ea00] profile High, level 3.1
  
  [libx264 @ 0x7f8a5b80ea00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=12 lookahead_threads=2 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 'out.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      encoder         : Lavf56.40.101
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-10-28 22:08:44
  
        handler_name    : Alias Data Handler
  
        encoder         : Lavc56.60.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=  400 fps=0.0 q=-1.0 Lsize=     262kB time=00:00:15.92 bitrate= 134.9kbits/s    
  
  video:257kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.971545%
  
  [libx264 @ 0x7f8a5b80ea00] frame I:2     Avg QP:13.86  size:  9730
  
  [libx264 @ 0x7f8a5b80ea00] frame P:174   Avg QP:21.01  size:  1121
  
  [libx264 @ 0x7f8a5b80ea00] frame B:224   Avg QP:20.88  size:   215
  
  [libx264 @ 0x7f8a5b80ea00] consecutive B-frames: 19.2% 17.0%  3.8% 60.0%
  
  [libx264 @ 0x7f8a5b80ea00] mb I  I16..4: 62.9% 26.0% 11.1%
  
  [libx264 @ 0x7f8a5b80ea00] mb P  I16..4:  3.7%  1.0%  0.7%  P16..4:  3.0%  1.5%  0.8%  0.0%  0.0%    skip:89.3%
  
  [libx264 @ 0x7f8a5b80ea00] mb B  I16..4:  0.4%  0.1%  0.0%  B16..8:  3.3%  0.5%  0.0%  direct: 0.0%  skip:95.6%  L0:47.0% L1:43.5% BI: 9.5%
  
  [libx264 @ 0x7f8a5b80ea00] 8x8 transform intra:19.3% inter:33.8%
  
  [libx264 @ 0x7f8a5b80ea00] coded y,uvDC,uvAC intra: 7.4% 6.8% 5.5% inter: 0.5% 0.6% 0.5%
  
  [libx264 @ 0x7f8a5b80ea00] i16 v,h,dc,p: 70% 29%  1%  0%
  
  [libx264 @ 0x7f8a5b80ea00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15%  7% 77%  1%  0%  0%  0%  0%  0%
  
  [libx264 @ 0x7f8a5b80ea00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 23% 29%  3%  2%  2%  2%  1%  1%
  
  [libx264 @ 0x7f8a5b80ea00] i8c dc,h,v,p: 74% 10% 15%  0%
  
  [libx264 @ 0x7f8a5b80ea00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7f8a5b80ea00] ref P L0: 64.1%  5.3% 17.6% 12.9%
  
  [libx264 @ 0x7f8a5b80ea00] ref B L0: 77.4% 19.7%  2.9%
  
  [libx264 @ 0x7f8a5b80ea00] ref B L1: 95.5%  4.5%
  
  [libx264 @ 0x7f8a5b80ea00] kb/s:131.31