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• FFMPEG HLS stream for Android and IOS

  30 juin, par Poda

  I'm trying to stream to mobile devices with ffmpeg and apache2.2 but I haven't been successful.

  



  I used this command to create the segments and the playlist :

  



  ffmpeg -i http://x.x.x.x:8080 -codec:v libx264 -r 25 -pix_fmt yuv420p -profile:v baseline -level 3 -b:v 500k -s 640x480 -codec:a aac -strict experimental -ac 2 -b:a 128k -movflags faststart -flags -global_header -map 0 -f hls  -hls_time 10 -hls_list_size 5 -hls_allow_cache 0 -sc_threshold 0 -hls_flags delete_segments -hls_segment_filename out%05d.ts list.m3u8


  



  The source is a http stream which is streamed by VLC media player.

  



  Example content of the list.m3u8 file :

  



  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-ALLOW-CACHE:NO
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:89
#EXTINF:10.000000,
out00089.ts
#EXTINF:10.000000,
out00090.ts
#EXTINF:10.000000,
out00091.ts
#EXTINF:10.000000,
out00092.ts
#EXTINF:9.000000,
out00093.ts
#EXT-X-ENDLIST


  



  I created another playlist file - playlist.m3u8 :

  



  #EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=512000
http://x.x.x.x/list.m3u8


  



  If I open this (playlist.m3u8) file in VLC media player then it plays.
It also works in desktop chrome and desktop firefox browsers with Video-js plugin flash fallback.

  



  I set the correct MIME types to the .ts and .m3u8 files in .htaccess file :

  



  AddType application/x-mpegURL .m3u8
AddType video/MP2T .ts


  



  FFprobe output for playlist.m3u8 :

  



  Input #0, hls,applehttp, from 'playlist.m3u8':
    Duration: N/A, start: 1.400000, bitrate: N/A
    Program 0
    Metadata: variant_bitrate : 512000
Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
Metadata: variant_bitrate : 512000
Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 128 kb/s
Metadata: variant_bitrate : 512000


  



  What should I do to make it work ?

  



  UPDATE

  



  It works if I provide a link to list.m3u8 file (created by ffmpeg).

  


• Use ffmpeg to stream live content to azure media services

  19 mars 2018, par Dadicool

  I’ve been trying to stream content to azure media services using ffmpeg as it’s one of the options described here : http://azure.microsoft.com/blog/2014/09/18/azure-media-services-rtmp-support-and-live-encoders/

  My command is :

  ffmpeg -v verbose -i 300.mp4 -strict -2 -c:a aac -b:a 128k -ar 44100 -r 30 -g 60 -keyint_min 60 -b:v 400000 -c:v libx264 -preset medium -bufsize 400k -maxrate 400k -f flv rtmp://nessma-****.channel.mediaservices.windows.net:1935/live/584c99f5c47f424d9e83ac95364331e7

  I have made sure that the streaming endpoint has one active streaming unit, I also made sure that the channel is actually Ready and I even get it to start streaming (which makes a PublishURL available).

  When I execute the ffmpeg command to start streaming, I keep getting the following error :

  ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
 built on Dec 30 2014 11:31:18 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
 configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --arch=x86_64 --enable-runtime-cpudetect
 libavutil      54. 15.100 / 54. 15.100
 libavcodec     56. 13.100 / 56. 13.100
 libavformat    56. 15.102 / 56. 15.102
 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
Routing option strict to both codec and muxer layer
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] overread end of atom 'colr' by 1 bytes
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] stream 0, timescale not set
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] max_analyze_duration 5000000 reached at 5003637 microseconds
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '300.mp4':
 Metadata:
   major_brand     : mp42
   minor_version   : 0
   compatible_brands: mp42isomavc1
   creation_time   : 2014-01-11 05:39:32
   genre           : Trailer
   artist          : Warner Bros.
   title           : 300: Rise of an Empire - Trailer 2
   encoder         : HandBrake 0.9.9 2013051800
   date            : 2014
 Duration: 00:02:33.24, start: 0.000000, bitrate: 7377 kb/s
   Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 (1920x1088), 7219 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)
   Metadata:
     creation_time   : 2014-01-11 05:39:32
     encoder         : JVT/AVC Coding
   Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 157 kb/s (default)
   Metadata:
     creation_time   : 2014-01-11 05:39:32
   Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 101x150 [SAR 72:72 DAR 101:150], 90k tbr, 90k tbn, 90k tbc
rtmp://nessma-****.channel.mediaservices.windows.net:1935/live/584c99f5c47f424d9e83ac95364331e7: Input/output error

  The Azure blog post clearly states that this should be possible but I can’t find a working example anywhere.

  Environment :

  • MacOS Maverick
  • FFMPEG installed from official build
  • 300.mp4 : 1080p trailer of the latest 300 movie

• FFMPEG (C++) convert & compress a single image out of buffer

  27 mars 2018, par MrEinsa

  i try to encode (with compression) and decode (without compression) a image with ffmpeg. But if i want to get the sent image back with avcodec_receive_packet i get only the error AVERROR(EAGAIN).

  It doesnt matter what i change ... allways AVERROR(EAGAIN) is the outcome. Is it maybe a problem of sending just one single frame to the encoder ? And if yes, how to fix it ?

  Code (only relevant stuff shown) :

          avcodec_register_all();
  
  
  
  
  
      /* ------ init codec ------------------*/
  
      AVCodec *codec;
  
      codec = avcodec_find_decoder(AV_CODEC_ID_H264);
  
      if (!codec)
  
      {
  
          print("compressH264, could not find decoder:\"AV_CODEC_ID_H264\"!!!");
  
          return false;
  
      }
  
  
  
      AVCodec *nVidiaCodec = avcodec_find_encoder_by_name("h264_nvenc");
  
      if (!nVidiaCodec)
  
      {
  
          print("err");
  
      }
  
      /* ------ ------------ ------------------*/
  
  
  
      /* ------ init context ------------------*/
  
      AVCodecContext* av_codec_context_ = NULL;
  
      av_codec_context_ = avcodec_alloc_context3(nVidiaCodec);
  
      if (!av_codec_context_)
  
      {
  
          print("compressH264, avcodec_alloc_context3 failed!!!");
  
          return false;
  
      }
  
      int w = imgSrc.width();
  
      int h = imgSrc.height();
  
      if ((w % 2) != 0)
  
      {
  
          ++w;
  
      }
  
      if ((h % 2) != 0)
  
      {
  
          ++h;
  
      }
  
      av_codec_context_->width = w;
  
      av_codec_context_->height = h;
  
      av_codec_context_->pix_fmt = AV_PIX_FMT_YUV420P;
  
      av_codec_context_->gop_size = 1;
  
      av_codec_context_->max_b_frames = 1;
  
      av_codec_context_->bit_rate = 400000; 
  
      av_codec_context_->time_base.den = 1;
  
      av_codec_context_->time_base.num = 1;
  
  
  
      av_opt_set(av_codec_context_->priv_data, "preset", "slow", 0);
  
  
  
      int ret = avcodec_open2(av_codec_context_, nVidiaCodec, NULL);
  
      if (0 > ret)
  
      {
  
          print("compressH264, could not open codec context for decoder:\"AV_CODEC_ID_H264\"!!!");
  
          return false;
  
      }
  
  
  
  
  
      AVFrame *picture = av_frame_alloc();
  
      picture->format = AV_PIX_FMT_RGB24;
  
      picture->width = w;
  
      picture->height = h;
  
  
  
      ret = avpicture_fill((AVPicture *)picture, imgSrc.bits(), AV_PIX_FMT_RGB24, w, h);
  
      if (0 > ret)
  
      {
  
          print("compressH264, avpicture_fill - failed!!!");
  
          return false;
  
      }
  
  
  
      AVFrame *tmp_picture = av_frame_alloc();
  
      tmp_picture->format = AV_PIX_FMT_YUV420P;
  
      tmp_picture->width = w;
  
      tmp_picture->height = h;
  
  
  
      ret = av_frame_get_buffer(tmp_picture, 32);
  
  
  
      SwsContext *img_convert_ctx = sws_getContext(av_codec_context_->width, av_codec_context_->height, AV_PIX_FMT_RGB24, av_codec_context_->width, av_codec_context_->height, av_codec_context_->pix_fmt, SWS_BICUBIC, NULL, NULL, NULL);
  
  
  
      ret = sws_scale(img_convert_ctx, picture->data, picture->linesize, 0, av_codec_context_->height, tmp_picture->data, tmp_picture->linesize);
  
  
  
      int h264Size = avpicture_get_size(AV_PIX_FMT_YUV420P, w, h);
  
  
  
      ret = avcodec_send_frame(av_codec_context_, tmp_picture);
  
      if (0 > ret)
  
      {
  
          char err[AV_ERROR_MAX_STRING_SIZE];
  
          av_make_error_string(err, AV_ERROR_MAX_STRING_SIZE, ret);
  
          print("compressH264, avcodec_send_frame: %s", err);
  
      }
  
  
  
  
  
      AVPacket *pkt = av_packet_alloc();
  
  
  
      while (ret >= 0)
  
      {
  
          ret = avcodec_receive_packet(av_codec_context_, pkt);
  
          if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
  
          {
  
              break;
  
          }
  
          else if (ret < 0)
  
          {
  
              fprintf(stderr, "Error during encoding\n");
  
              exit(1);
  
          }
  
          av_packet_unref(pkt);
  
      }
  
      print("success");

  Everything works well until :
   avcodec_receive_packet ... i get all time the error AVERROR(EAGAIN).

  I can start decoding just if i have the compressed image.

  Thanks for your help guys.

  Edit :
  If i do now the following code, i get a packet and ret == 0, but i have to send 46 times the same image ... for me this makes no sence.

          do 
  
      {
  
          ret = avcodec_receive_packet(av_codec_context_, &pkt);
  
          if (ret == 0)
  
          {
  
              break;
  
          }
  
          else if ((ret < 0) && (ret != AVERROR(EAGAIN)))
  
          {
  
              coutF("error");
  
          }
  
          else if (ret == AVERROR(EAGAIN))
  
          {
  
              ret = avcodec_send_frame(av_codec_context_, tmp_picture);
  
              if (0 > ret)
  
              {
  
                  char err[AV_ERROR_MAX_STRING_SIZE];
  
                  av_make_error_string(err, AV_ERROR_MAX_STRING_SIZE, ret);
  
                  coutFRed("compressH264, avcodec_send_frame: %s", err);
  
              }
  
              coutF("cnt:%d", ++cnt);
  
          }
  
  
  
      } while (ret == 0);

  Edit :

  Good morning,

  after more invest, i got the issue. I have to send the same frame a lot of time, because of the keyframe stuff for h264. The question now is, if it is possible to remove the h264 standart stuff from the encoder and just let FFMPEG convert one single frame.