Recherche avancée

Sur d’autres sites (11299)

• ffmpeg rtmp live stream to Azure Media Services

  18 mars 2015, par Pilskalns

  Somehow I got publishing Azure Media Services to work, except there is huge frame drop (almost every frame) with those settings :

  ffmpeg -i "http://stream01/hls/live/playlist-mid.m3u8" -strict -2 -c:a aac -b:a 192k
  
  -ar 44100 -r 25 -g 60 -keyint_min 60 -b:v 2000k -c:v libx264 -bufsize 2000k
  
  -maxrate 2000k -f flv "rtmp://publishurl.working.is/mystream1"

  + I can’t play URL from Azure.

  When I publish to local nginx-rtmp server, frame drop stays and despite it I can play it. So, I believe that frame drop is ffmpeg related not Azure. Processor is not overloaded, available bandwidth is excellent.

  When I try original settings from this URL (at very bottom), I this get additionaly this ffmpeg error Past duration 0.719994 too large

  Here’s more from output :

  c:\ffmpeg\bin>ffmpeg -i "http://stream01/hls/live/playlist-mid.m3u8" -strict -2 -c:a aac -b:a 192k -ar 44100 -r 25 -g 60 -keyint_min 60 -b:v 2000k -c:
  
  v libx264 -bufsize 1000k -maxrate 2000k -f flv "rtmp://********.channel.mediaservices.windows.net:1935/live/9590f0be/mystream1"
  
  ffmpeg version N-69972-g6c91afe Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu
  
  tls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-
  
  libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-l
  
  ibrtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
  
  enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --ena
  
  ble-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      54. 19.100 / 54. 19.100
  
    libavcodec     56. 25.100 / 56. 25.100
  
    libavformat    56. 23.100 / 56. 23.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.100 /  5. 11.100
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, hls,applehttp, from 'http://stream01/hls/live/playlist-mid.m3u8':
  
    Duration: N/A, start: 3314.605633, bitrate: N/A
  
    Program 0
  
      Metadata:
  
        variant_bitrate : 1500000
  
      Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv), 854x480 [SAR 1:1 DAR 427:240], 50 fps, 50 tbr, 90k tbn, 100 tbc
  
      Metadata:
  
        variant_bitrate : 1500000
  
      Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 216 kb/s
  
      Metadata:
  
        variant_bitrate : 1500000
  
  [libx264 @ 0000000000306280] using SAR=1/1
  
  [libx264 @ 0000000000306280] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0000000000306280] profile High, level 3.0
  
  [libx264 @ 0000000000306280] 264 - core 144 r2525 40bb568 - 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 dead
  
  zone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_in
  
  tra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=60 keyint_min=31 scenecut=40 intra_refresh=0 rc_lookahea
  
  d=40 rc=cbr mbtree=1 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2000 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.
  
  40 aq=1:1.00
  
  Output #0, flv, to 'rtmp://*******.channel.mediaservices.windows.net:1935/live/37b4e25/mystream1':
  
    Metadata:
  
      encoder         : Lavf56.23.100
  
      Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 854x480 [SAR 1:1 DAR 427:240], q=-1--1, 2000 kb/s, 25 fps, 1k tbn, 25 tbc
  
      Metadata:
  
        variant_bitrate : 1500000
  
        encoder         : Lavc56.25.100 libx264
  
      Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 192 kb/s
  
      Metadata:
  
        variant_bitrate : 1500000
  
        encoder         : Lavc56.25.100 aac
  
  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
  
  [flv @ 0000000000305820] Failed to update header with correct duration.1.4kbits/s dup=0 drop=10697
  
  [flv @ 0000000000305820] Failed to update header with correct filesize.
  
  frame=10714 fps= 24 q=-1.0 Lsize=  100583kB time=00:07:11.08 bitrate=1911.4kbits/s dup=0 drop=10701
  
  video:90024kB audio:10042kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.516478%
  
  [libx264 @ 0000000000306280] frame I:190   Avg QP:10.58  size: 72438
  
  [libx264 @ 0000000000306280] frame P:3406  Avg QP:14.32  size: 19296
  
  [libx264 @ 0000000000306280] frame B:7118  Avg QP:19.55  size:  1784
  
  [libx264 @ 0000000000306280] consecutive B-frames:  8.8%  4.4% 10.5% 76.3%
  
  [libx264 @ 0000000000306280] mb I  I16..4: 23.0% 20.2% 56.8%
  
  [libx264 @ 0000000000306280] mb P  I16..4:  2.7%  4.5%  5.2%  P16..4: 41.9% 11.6%  8.7%  0.0%  0.0%    skip:25.4%
  
  [libx264 @ 0000000000306280] mb B  I16..4:  0.1%  0.1%  0.2%  B16..8: 26.5%  2.2%  0.5%  direct: 3.2%  skip:67.1%  L0:51.0% L1:38.2% BI:10.8%
  
  [libx264 @ 0000000000306280] 8x8 transform intra:31.3% inter:36.6%
  
  [libx264 @ 0000000000306280] coded y,uvDC,uvAC intra: 80.5% 73.5% 51.1% inter: 16.1% 18.8% 5.8%
  
  [libx264 @ 0000000000306280] i16 v,h,dc,p: 21% 29% 27% 23%
  
  [libx264 @ 0000000000306280] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 32% 19%  4%  4%  4%  5%  4%  7%
  
  [libx264 @ 0000000000306280] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 30% 15%  4%  5%  5%  5%  4%  5%
  
  [libx264 @ 0000000000306280] i8c dc,h,v,p: 38% 30% 24%  8%
  
  [libx264 @ 0000000000306280] Weighted P-Frames: Y:1.8% UV:0.4%
  
  [libx264 @ 0000000000306280] ref P L0: 78.0%  8.5% 10.1%  3.3%  0.0%
  
  [libx264 @ 0000000000306280] ref B L0: 91.3%  7.9%  0.8%
  
  [libx264 @ 0000000000306280] ref B L1: 95.4%  4.6%
  
  [libx264 @ 0000000000306280] kb/s:1716.97
  
  Received signal 2: terminating.

• Best practices for developing scalable video transcoding server on Amazon Web Services ? [closed]

  5 février, par undefined

  What do people think are the most important issues when developing an application that is going to allow users to upload video and images to a server and have them transcoded by FFMPEG and stored in amazon S3 ? I have a couple of options ;

  


  

  1. install FFMPEG on the same server that handles file uploads, when a video is uploaded and stored on EC2 instance, call FFMPEG to convert it then when done, write the file to S3 bucket and dispose of the original.

  


  


  How scalable is this ? What happens when many users upload at the same time ? How do I manage multiple processes at once ? How do I know when to start another instance and load balance this configuration ?

  


  

  2. Have one server for processing uploads (updating database, renaming files etc) and one server for doing transcoding. Again what is the best way to manage multiple processes ? should I be looking at Amazon SQS for this ? Can I tell the transcoding server to get the file from the upload server or should I copy the file to the transcoding server ? Should I just store all files on S3 and SQS can read from there. I am trying to have as little traffic as possible.

  


  


  I am running a linux box as the upload server and have FFMPEG running on this.

  


• Weird bug with FFMPEG when adding path (escape character \ )

  15 juillet 2018, par alan samuel

  I am using C# to execute some FFMPEG commands.

  I have a FFMPEG command like this -

      ffmpeg -i C:\\Users\\Alan\\source\\repos\\TEST\\Tem_Videos/24d4a5be-5615-7930-5a38-c4e191aa8c48.mp4 
  
  -i C:\\Users\\Alan\\source\\repos\\TEST\\Video_Templates/Redacted.png -filter_complex "[0:v][1:v]overlay=0:0:enable='between(t,2,3)',drawtext=fontfile='C\\:\\Users\\Alan\\source\\repos\\TEST\\FFMPEG\\FreeSerif.ttf':enable='between(t,2,3)':fontcolor=white:fontsize=50:text='This section has been redacted':x=(w-text_w)/2:y=(h-text_h)/2[v];[0]volume=0:enable='between(t,2,3)'[a]" -map "[v]" -map "[a]" -preset ultrafast C:\\Users\\Alan\\source\\repos\\TEST\\Tem_Videos/6b70aeea-26fb-45ad-b7ad-254803f3e610.mp4"

  I am adding the escape characters when generating paths. But when using drawtext the command - drawtext=fontfile='C\\:\\Users\\Alan\\source\\repos\\TEST\\FFMPEG\\FreeSerif.ttf'

  This always fails when it runs.

  If I run the command in cmd after changing the ’C// :’ to ’C/ :’ it works.

  How do we get around this when I need to add a custom path for the font ?

  Here is how I am setting the command in C#

   string fontpath = System.Web.HttpContext.Current.Server.MapPath("~/FFMPEG/FreeSerif.ttf");
  
              fontpath = fontpath.Replace(":", @"\:");
  
              string ffmpegfile = System.Web.HttpContext.Current.Server.MapPath("~/FFMPEG/ffmpeg.exe");
  
              string commandtorun = " -i " + inputvideo + " -i " + overlay + " -filter_complex \"[0:v][1:v] overlay=0:0:" +
  
                  "enable='between(t," + starttime + "," + endtime + ")',drawtext=fontfile='" + fontpath + "':enable='between(t," + starttime + "," + endtime + ")':fontcolor=white:fontsize=50:text='This section has been redacted':x=(w-text_w)/2:y=(h-text_h)/2[v];[0]volume=0:" +
  
                  "enable='between(t," + starttime + "," + endtime + ")'[a]\" -map \"[v]\" -map \"[a]\" " +
  
                  "-preset ultrafast " + finaloutput;