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• what protocol must use for broadcast live video ?

  19 août 2021, par user3807476

  A server is in the middle
And we want you to send live video to it

  


  And on the other hand, watch it through the HTTPS like https://server/live.pm4

  


  

  


  What protocols can be used for this purpose ?

  


  I used to do this experimentally with nodejs dgram and ffmpeg on the raw UDP and it worked fine !
but stability and security is an issue that must be observed !

  


• ffmpeg conversion x264 [error] : malloc of size 769152 failed

  18 décembre 2014, par prashanthp

  I am trying to convert video recorded from Android smart watch (.mp4 format) to a format (.mp4) which playable on all browsers. The video recorded from smart watch is not playing in the browsers. so, i’ve used ffmpeg to convert in into a playable mp4 format.

  But sometimes it is showing error as x264 [error]: malloc of size 503008 failed

  What is the reason for this. Sometimes it’s getting converted and sometimes it is showing error .

  Here is the console output.

   /usr/local/ffmpeg_build/ffmpeg/bin/ffmpeg  -i /home/xestatt1/public_html/app/webroot/mobile/uploads/in/Dec152014161945.mp4 -vcodec libx264   -r 24 -s 352*288 -acodec aac  -ab 12k -strict -2  /home/xestatt1/public_html/app/webroot/mobile/uploads/out/ot12.mp4
  
  
  
  ffmpeg version 2.5.git Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Dec 13 2014 05:42:08 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-55)
  
    configuration: --prefix=/usr/local/ffmpeg_build/ffmpeg --enable-libx264 --enable-gpl --extra-cflags=-I/usr/local/ffmpeg_build/x264/include --extra-ldflags=-L/usr/local/ffmpeg_build/x264/lib
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 14.100 / 56. 14.100
  
    libavformat    56. 15.103 / 56. 15.103
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/xestatt1/public_html/app/webroot/mobile/uploads/in/Dec152014161945.mp4':
  
    Metadata:
  
      major_brand     : 3gp4
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2014-12-15 10:50:02
  
    Duration: 00:00:10.12, start: 0.000000, bitrate: 151 kb/s
  
      Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 135 kb/s, 13.14 fps, 50 tbr, 90k tbn, 200 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-12-15 10:50:02
  
        handler_name    : VideoHandle
  
        encoder         :
  
      Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, flt, 12 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-12-15 10:50:02
  
        handler_name    : SoundHandle
  
  File '/home/xestatt1/public_html/app/webroot/mobile/uploads/out/ot12.mp4' already exists. Overwrite ? [y/N] y
  
  [libx264 @ 0x13b69120] using SAR=12/11
  
  [libx264 @ 0x13b69120] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
  
  [libx264 @ 0x13b69120] profile High, level 1.3
  
  [libx264 @ 0x13b69120] 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=24 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 '/home/xestatt1/public_html/app/webroot/mobile/uploads/out/ot12.mp4':
  
    Metadata:
  
      major_brand     : 3gp4
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      encoder         : Lavf56.15.103
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 352x288 [SAR 12:11 DAR 4:3], q=-1--1, 24 fps, 12288 tbn, 24 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-12-15 10:50:02
  
        handler_name    : VideoHandle
  
        encoder         : Lavc56.14.100 libx264
  
      Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 8000 Hz, mono, fltp, 12 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-12-15 10:50:02
  
        handler_name    : SoundHandle
  
        encoder         : Lavc56.14.100 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (amr_nb (amrnb) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  Past duration 1.000000 too large
  
  Multiple frames in a packet from stream 1
  
  Past duration 1.000000 too large
  
  av_interleaved_write_frame(): Cannot allocate memory
  
  x264 [error]: malloc of size 769152 failed
  
  Video encoding failed
  
  [libx264 @ 0x13b69120] frame I:1     Avg QP:22.20  size:  3166
  
  [libx264 @ 0x13b69120] mb I  I16..4: 28.3% 70.5%  1.3%
  
  [libx264 @ 0x13b69120] 8x8 transform intra:70.5%
  
  [libx264 @ 0x13b69120] coded y,uvDC,uvAC intra: 47.5% 55.3% 12.4%
  
  [libx264 @ 0x13b69120] i16 v,h,dc,p: 16% 26%  6% 52%
  
  [libx264 @ 0x13b69120] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 19% 15% 12%  3%  3%  3%  5% 16%
  
  [libx264 @ 0x13b69120] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16%  2% 20% 10% 16% 14%  4% 11%  6%
  
  [libx264 @ 0x13b69120] i8c dc,h,v,p: 61% 17% 19%  4%
  
  [libx264 @ 0x13b69120] kb/s:607.87
  
  [aac @ 0x13b6a4c0] 2 frames left in the queue on closing
  
  Conversion failed!

  UPDATED

  When i execute this from shell it is working fine. But when i create a script file and trying to execute that script file from php , it is showing error’s. I increased the memory limit in php, still it is showing error. Also , we are using ZEND framework. Is there any problems with ZEND ??

• FFmpeg converting from video to audio missing duration

  10 décembre 2014, par Jakemmarsh

  I’m attempting to load YouTube videos via their direct video URL (retrieved using ytdl-core). I load them using the request library. I then pipe the result to a stream, which is used as the input to ffmpeg (via fluent-ffmpeg). The code looks something like this :

  var getAudioStream = function(req, res) {
  
      var requestUrl = 'http://youtube.com/watch?v=' + req.params.videoId;
  
      var audioStream = new PassThrough();
  
      var videoUrl;
  
  
  
      ytdl.getInfo(requestUrl, { downloadURL: true }, function(err, info) {
  
        res.setHeader('Content-Type', 'audio/x-wav');
  
        res.setHeader('Accept-Ranges', 'bytes');
  
        videoUrl = info.formats ? info.formats[0].url : '';
  
        request(videoUrl).pipe(audioStream);
  
  
  
        ffmpeg()
  
          .input(audioStream)
  
          .outputOptions('-map_metadata 0')
  
          .format('wav')
  
          .pipe(res);
  
      });
  
    };

  This actually works just fine, and the frontend successfully receives just the audio in WAV format and is playable. However, the audio is missing any information about its size or duration (and all other metadata). This also makes it unseekable.

  I’m assuming this is lost somewhere during the ffmpeg stage, because if I load the video directly via the URL passed to request it loads and plays fine, and has a set duration/is seekable. Any ideas ?