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• Converted Avi to Mp4 using FFMPEG, Converted video not working in html 5 Tag

  21 mars 2015, par Suprabhat

  I have a section in my web page where user can upload any types of videos of any format , currently only restricted to .mp4 and .avi. After successfull upload i have displayed the same video to the user. I have bind the path in HTML5 video so that the user can view the content he/she has uploded. Video with extension .mp4 no doubt are working properly as HTML5 support them. Tricky part is it don’t support Avi files. Now here what the problem has arised. In order to display avi videos i have used FFMPEG to convert videos with extension .avi to .mp4. With lots of googling and reading forum, i have succesfully converted avi videos to mp4 . Here’s what i have used :-

  1. ffmpeg -i input.avi -acodec libfaac -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 output.mp4

  2. ffmpeg -i input.avi -c:v libx264 -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 output.mp4

  Above two are working perfectly, they have succesfully converted the video. But when i run them on browser in HTML5 and in new tab (Flash Player Plugin Installed), HTML5 doesn’t play it and flash player return an error message "Video can’t be played because the file is corrupt". But when i played them on KMplayer and in Window media player they are running perfectly.

  I have been to various threads in stackoverflow related to convert avi to mp4 and here i found following in one of the forum. where one of user has accepted this a correct answer but it ain’t worked out for me.

  3. ffmpeg -y -i sample.avi -b:v 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 sample.mp4

  Above argument returned me following error "File for preset ’slow’ not found".

  Following my futher searches i came across this thread ffmpeg convert mov file to mp4 for HTML5 video tag IE9. Here following argument worked perfectly and it able to convert video in such way that it is playble on browser.

  4. ffmpeg -y -i input.avi -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k -pix_fmt yuv420p output.mp4.

  Problem i faced here was video is converted to 420p reso which quality is noty upto mark. Smaller resolution videos are been enlarged and seems pixelated

  Thus, i had to finally put up a question. I will be very obliged if someone can give a solution for above problem. I need to convert an avi video to mp4 supported by HTML5 video tag. It should able to play it on browser and during conversion of video it should maintain original audio and video quality plus resolution.

  Thanks

  My C# Code :

          public void Create(string input, string output, string parametri, string ThumbnailPhysicalPath, int ConvertType)
  
          {
  
              ffmpeg = new Process();
  
  
  
              if (ConvertType == Convert.ToInt32(ConversionType.Thumbnail))
  
                  ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -vframes 1 \"" + output + "\"";
  
              else if (ConvertType == Convert.ToInt32(ConversionType.AviToMp4))
  
                  ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -c:v libx264 -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 \"" + output + "\"";
  
                  //ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k -pix_fmt yuv420p \"" + output + "\"";
  
              ffmpeg.StartInfo.FileName = ThumbnailPhysicalPath + @"ffmpeg.exe";
  
              ffmpeg.StartInfo.UseShellExecute = false;
  
              ffmpeg.StartInfo.RedirectStandardOutput = true;
  
              ffmpeg.StartInfo.RedirectStandardError = true;
  
              ffmpeg.StartInfo.CreateNoWindow = true;
  
              try
  
              {
  
                  ffmpeg.Start();
  
                  ffmpeg.WaitForExit();
  
                  string error = ffmpeg.StandardError.ReadToEnd();
  
              }
  
              catch (Exception Ex)
  
              {
  
                  Common.WriteLog("Exception occurred during conversion. Error Message :- " + Ex.Message + "\n Input Parameter :- " + input+ "\n Output Paramenter :- "+ output);
  
              }
  
              finally
  
              {
  
                  ffmpeg.Close();
  
                  if (ConvertType == Convert.ToInt32(ConversionType.AviToMp4))
  
                      UpdateConvertedVideoDetails(input,output);
  
              }
  
          }

  Command Prompt FFMPEG Output :-

  Sample 3 Result :-

  D:\Client\WebSite\Converter_Tools>ffmpeg -y -i sample.avi -b:v 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 sample.mp4
  
  ffmpeg version N-70239-g111d79a 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-gnutls --enable-iconv --enable-libass --enable-libblu
  
  ray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
  
  b --enable-libopenjpeg --enable-libopus --enable-librtmp --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 --enable-libxvid --enable-lzma --enable-decklink --enab
  
  le-zlib
  
    libavutil      54. 19.100 / 54. 19.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 23.105 / 56. 23.105
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.101 /  5. 11.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avi @ 037c8480] non-interleaved AVI
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, avi, from 'sample.avi':
  
    Duration: 00:00:34.00, start: 0.000000, bitrate: 1433 kb/s
  
      Stream #0:0: Video: cinepak (cvid / 0x64697663), rgb24, 320x240, 15 fps, 15 tbr, 15 tbn, 15 tbc
  
      Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 22050 Hz, 1 channels, u8, 176 kb/s
  
  File for preset 'slow' not found

  Sample 4 Result :-

  D:\Client\WebSite\Converter_Tools>ffmpeg -y -i input.avi -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_
  
  aacenc -b:a 128k -pix_fmt yuv420p output.mp4
  
  ffmpeg version N-70239-g111d79a 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-gnutls --enable-iconv --enable-libass --enable-libblu
  
  ray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
  
  b --enable-libopenjpeg --enable-libopus --enable-librtmp --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 --enable-libxvid --enable-lzma --enable-decklink --enab
  
  le-zlib
  
    libavutil      54. 19.100 / 54. 19.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 23.105 / 56. 23.105
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.101 /  5. 11.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, avi, from 'input.avi':
  
    Duration: 00:00:03.93, start: 0.000000, bitrate: 3255 kb/s
  
      Stream #0:0: Video: msrle ([1][0][0][0] / 0x0001), pal8, 300x250, 3301 kb/s, 15 fps, 15 tbr, 15 tbn, 15 tbc
  
  [libx264 @ 002ec860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 002ec860] profile High, level 2.2
  
  [libx264 @ 002ec860] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subm
  
  e=8 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=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i
  
  nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=50 rc
  
  =cbr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf56.23.105
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 576x480, q=-1--1, 500 kb/s, 15 fps, 15360 tbn, 15 tbc
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (msrle (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   59 fps= 30 q=-1.0 Lsize=     229kB time=00:00:03.80 bitrate= 493.5kbits/s
  
  video:227kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.637976%
  
  [libx264 @ 002ec860] frame I:3     Avg QP:26.53  size: 10657
  
  [libx264 @ 002ec860] frame P:25    Avg QP:30.49  size:  5608
  
  [libx264 @ 002ec860] frame B:31    Avg QP:32.26  size:  1935
  
  [libx264 @ 002ec860] consecutive B-frames: 22.0% 16.9% 20.3% 40.7%
  
  [libx264 @ 002ec860] mb I  I16..4: 16.7% 69.0% 14.4%
  
  [libx264 @ 002ec860] mb P  I16..4: 11.1% 29.9%  3.8%  P16..4: 21.3%  6.8%  2.6%  0.0%  0.0%    skip:24.6%
  
  [libx264 @ 002ec860] mb B  I16..4:  1.7%  3.0%  0.3%  B16..8: 29.7%  5.6%  0.8%  direct: 2.1%  skip:56.8%  L0:50.5% L1:45.6% BI: 3.9%
  
  [libx264 @ 002ec860] 8x8 transform intra:66.5% inter:79.4%
  
  [libx264 @ 002ec860] direct mvs  spatial:93.5% temporal:6.5%
  
  [libx264 @ 002ec860] coded y,uvDC,uvAC intra: 40.3% 48.8% 25.7% inter: 12.4% 8.4% 1.4%
  
  [libx264 @ 002ec860] i16 v,h,dc,p: 19% 59%  6% 17%
  
  [libx264 @ 002ec860] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 25% 16%  7%  8%  6% 11%  7% 10%
  
  [libx264 @ 002ec860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 21%  9%  7%  9%  8% 10%  7% 10%
  
  [libx264 @ 002ec860] i8c dc,h,v,p: 41% 33% 13% 13%
  
  [libx264 @ 002ec860] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 002ec860] ref P L0: 67.6%  8.1%  9.6%  5.4%  6.6%  2.8%
  
  [libx264 @ 002ec860] ref B L0: 84.6% 10.5%  3.9%  1.0%
  
  [libx264 @ 002ec860] ref B L1: 95.9%  4.1%
  
  [libx264 @ 002ec860] kb/s:472.20

• Révision 21939 : gestion des emoji avec MySQL

  14 mars 2015, par Fil Up

  ================

  le charset ’utf8’ de MySQL ne contient pas l’ensemble de l’UTF-8, mais seulement les caractères codés sur 1, 2, ou 3 bytes ; pour contourner ce problème, on pourrait adopter le charset ’utf8mb4’, mais c’est difficile à faire, et ça implique de revoir la structure de la base (notamment les VARCHAR 255 ne passent plus, car 255*4 > 1000)

  la solution adoptée ici est d’échapper les caractères de 4 bytes sous leur forme unicode *

• ffmpeg and boost::asio NULL pointer

  9 avril 2015, par Georgi

  I am trying to make a special video software which will run on multiple core machines.

  I want many c++ object to stream video files and many other c++ objects to store the streamed data into file.

  I have created some simple classes, but when I try to create 2 and more objects I got :

  opening stream9079.sdp
  
  [udp @ 0xaef5380] bind failed: Address already in use
  
  Could not open input file stream9079.sdp
  
  Segmentation fault (core dumped)

  When I use only one object everything is fine.

  I use the following code

  int main(int argc, char **argv)
  
  {
  
      boost::asio::io_service ios;
  
      boost::asio::io_service ios1;
  
  
  
      Channel *channels[100];
  
  
  
      channels[0] = new Channel(ios, 9078, atoi(argv[1]));
  
      channels[0]->StartTimer(0);
  
  
  
      channels[1] = new Channel(ios1, 9079, atoi(argv[1]));
  
      channels[1]->StartTimer(0);
  
  
  
      boost::thread t(boost::bind(&worker, &ios));
  
      boost::thread t1(boost::bind(&worker, &ios1));
  
  
  
  
  
      t.join();
  
      t1.join();
  
  
  
      CEVLOG_MSG << "done" << std::endl;
  
  
  
      return 0;
  
  }

  My Channel class implementation is :

  #include "channel.hpp"
  
  #include "utils.hpp"
  
  #include "boost/lexical_cast.hpp"
  
  Channel::Channel(boost::asio::io_service &ioP, int i, bool to_send):
  
      Runnable(ioP),
  
      work( new boost::asio::io_service::work(ioP) ),
  
      ofmt(NULL),
  
      ifmt_ctx(NULL),
  
      ofmt_ctx(NULL)
  
  {
  
      id = i;
  
      sender = to_send;
  
  
  
      if (sender)
  
      {
  
              input.assign("/home/georgi/Downloads/video/IMG_0019.MOV");
  
              output.assign("rtp://10.101.3.60:"); output += boost::lexical_cast(id);
  
      }
  
      else
  
      {
  
              input.assign("stream"); input += boost::lexical_cast(id); input += ".sdp";
  
              output.assign("test"); output += boost::lexical_cast(id); output += ".mp4";
  
      }
  
  
  
  video_idx = audio_idx = sub_idx = -1;
  
  
  
      if (OpenInput())
  
      {
  
              if (sender)
  
                      OpenOutput(eStreamOutput);
  
              else
  
                      OpenOutput(eFileOutput);
  
      }
  
  }
  
  
  
   Channel::~Channel()
  
   {
  
      av_write_trailer(ofmt_ctx);
  
  
  
      avformat_close_input(&ifmt_ctx);
  
  
  
      if (ofmt_ctx && !(ofmt->flags & AVFMT_NOFILE))
  
              avio_closep(&ofmt_ctx->pb);
  
  
  
      avformat_free_context(ofmt_ctx);
  
  
  
      work.reset();
  
  }
  
  
  
  bool Channel::OpenInput()
  
  {
  
      CEVLOG_MSG << "opening " << input << std::endl;
  
  
  
      int ret;
  
      if ((ret = avformat_open_input(&ifmt_ctx, input.c_str(), 0, 0)) < 0)
  
      {
  
              CEVLOG_ERR << "Could not open input file " << input << std::endl;
  
              return false;
  
      }
  
  
  
      CEVLOG_MSG << " " << ifmt_ctx << std::endl;
  
  
  
      if ((ret = avformat_find_stream_info(ifmt_ctx, 0)) < 0)
  
      {
  
              CEVLOG_ERR << "Failed to retrieve input stream information" << std::endl;
  
              return false;
  
      }
  
  
  
      ifmt_ctx->flags |= AVFMT_FLAG_GENPTS;
  
  
  
      //read and set timestamps to 0
  
  av_read_frame(ifmt_ctx, &pkt);
  
  pkt.pts = pkt.dts = 0;
  
  
  
  return true;
  
  }
  
  
  
  bool Channel::OpenOutput(tOutputType WhatToOpen)
  
  {
  
      int SDP_size;
  
  
  
      switch (WhatToOpen)
  
      {
  
      case eFileOutput:
  
              avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, output.c_str());
  
              break;
  
  
  
      case eStreamOutput:
  
              avformat_alloc_output_context2(&ofmt_ctx, NULL, "rtp", output.c_str());
  
  
  
              char SDP[4096];
  
              SDP_size = 4096;
  
  
  
              av_sdp_create(&ofmt_ctx, 1, SDP, SDP_size);
  
              CEVLOG_DBG << "SDP=" << SDP << std::endl;
  
              break;
  
  
  
      default:
  
              assert(false);
  
              break;
  
      }
  
  
  
      if (!ofmt_ctx)
  
      {
  
              CEVLOG_ERR << "Could not create output context" << std::endl;
  
              return false;
  
      }
  
  
  
      ofmt = ofmt_ctx->oformat;
  
  
  
      video_idx = FindIndex(AVMEDIA_TYPE_VIDEO);
  
  
  
      if (!(ofmt->flags & AVFMT_NOFILE))
  
      {
  
              if (avio_open(&ofmt_ctx->pb, output.c_str(), AVIO_FLAG_WRITE) < 0)
  
              {
  
                      CEVLOG_ERR << "Could not open output file " << output << std::endl;
  
                      return false;
  
              }
  
      }
  
  
  
      if (avformat_write_header(ofmt_ctx, NULL) < 0)
  
      {
  
              CEVLOG_ERR << "Error occurred when opening output file " << output << std::endl;
  
              return false;
  
      }
  
  
  
      return true;
  
  }
  
  
  
  unsigned int Channel::FindIndex(AVMediaType Type)
  
  {
  
      int idx;
  
  
  
      for (idx = 0; idx < ifmt_ctx->nb_streams; idx++)
  
      {
  
              if (ifmt_ctx->streams[idx]->codec->codec_type == Type)
  
              {
  
                      AVStream *in_stream = ifmt_ctx->streams[idx];
  
                      AVStream *out_stream = avformat_new_stream(ofmt_ctx, in_stream->codec->codec);
  
  
  
                      if (!out_stream)
  
                      {
  
                              CEVLOG_ERR << "Failed allocating output stream" << std::endl;
  
                              break;
  
                      }
  
  
  
                      if (avcodec_copy_context(out_stream->codec, in_stream->codec) < 0)
  
                      {
  
                              CEVLOG_ERR << "Failed to copy context from input to output stream codec context" << std::endl;
  
                              break;
  
                      }
  
  
  
                      out_stream->codec->codec_tag = 0;
  
                      if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
  
                      {
  
                              out_stream->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
  
                      }
  
  
  
                      break;
  
              }
  
      }
  
  
  
      return idx;
  
   }
  
  
  
  void Channel::Callback()
  
  {
  
      if (sender)
  
              SendVideo();
  
      else
  
              RecvVideo();
  
  }
  
  
  
  void Channel::SendVideo()
  
  {
  
      int ret = av_read_frame(ifmt_ctx, &pkt);
  
      int time_ms = 0;
  
  
  
      if (ret != 0)
  
      {
  
              av_write_trailer(ofmt_ctx);
  
              work.reset();
  
              return;
  
      }
  
  
  
      if (pkt.stream_index == video_idx)
  
      {
  
              AVStream *in_stream  = ifmt_ctx->streams[pkt.stream_index];
  
              AVStream *out_stream = ofmt_ctx->streams[pkt.stream_index];
  
  
  
              AVRational time_base = ifmt_ctx->streams[video_idx]->time_base;
  
  
  
              char timestamp[100];
  
              time_ms = 1000 * 1000 * strtof(timestamp2char(timestamp, pkt.duration, &time_base), NULL);
  
  
  
              pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF);
  
              pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF);
  
              pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
  
              pkt.pos = -1;
  
  
  
              ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
  
  
  
              if (ret < 0)
  
              {
  
                      CEVLOG_ERR << "Error muxing packet" << std::endl;
  
                      return;
  
              }
  
      }
  
  
  
      av_free_packet(&pkt);
  
  
  
      StartTimer(time_ms);
  
  }
  
  
  
  void Channel::RecvVideo()
  
  {
  
      int ret = av_read_frame(ifmt_ctx, &pkt);
  
  
  
      if (ret != 0)
  
      {
  
              //Some error or end of stream is detected. Write file trailer
  
              av_write_trailer(ofmt_ctx);
  
              work.reset();
  
              return;
  
      }
  
  
  
      //if is NOT video just continue reading
  
      if (pkt.stream_index == video_idx)
  
      {
  
              AVStream *in_stream  = ifmt_ctx->streams[pkt.stream_index];
  
              AVStream *out_stream = ofmt_ctx->streams[pkt.stream_index];
  
  
  
              AVRational time_base = ifmt_ctx->streams[video_idx]->time_base;
  
  
  
              pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF);
  
              pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF);
  
              pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
  
              pkt.pos = -1;
  
  
  
              ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
  
              if (ret < 0)
  
              {
  
                      CEVLOG_ERR << "Error muxing packet" << std::endl;
  
                      return;
  
              }
  
      }
  
  
  
      av_free_packet(&pkt);
  
  
  
      StartTimer(0);
  
  }