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• dash.js : four channels audio streaming

  19 juillet 2016, par Carlos Chacon

  Does dash.js supports 4 channels in the audio stream ?

  I’m using mp4 container : video : h254 and audio : AAC.

  For the case that the AAC audio stream is 2 channels it works fine, both video and audio play correctly. But 4 channels does NOT work.

  I’m using FFMPEG to create the files and WOWZA to setup the DASH streaming.

  For the case that the AAC audio stream is 4 channels I get the following error :

   Video can't be played because the file is corrupt.

  Command line to generate the 2-channels file :

  ffmpeg -i video_in.mp4 -i audio_in_4ch.wav -c:v copy -c:a aac -ac 2 output_2channels.mp4

  Command line to generate the 4-channels file :

  ffmpeg -i video_in.mp4 -i audio_in_4ch.wav -c:v copy -c:a aac -ac 4 output_4channels.mp4

  This is the fmmpeg -i information printed for each file :

  2 Channels output file details :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_2channels.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.37.101
  
    Duration: 00:00:17.59, start: 0.000000, bitrate: 901 kb/s
  
      Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1024x512 [SAR 1:1 DAR 2:1], 894 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 129 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  4 Channels output file details :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_4channels.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.37.101
  
    Duration: 00:00:17.59, start: 0.000000, bitrate: 1038 kb/s
  
      Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1024x512 [SAR 1:1 DAR 2:1], 894 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 4.0, fltp, 265 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  4 Channels output file mdp file :

  <?xml version="1.0" encoding="UTF-8"?>
  
  <mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" publishtime="2016-07-19T05:56:28Z" mediapresentationduration="PT17.585S" minbuffertime="PT1.5S">
  
  <programinformation>
  
      
  
  </programinformation>
  
  <location>http://192.168.0.103:1935/vod/_definst_/mp4:output_4channels.mp4/manifest_w882219731.mpd</location>
  
  <period start="PT0.0S">
  
      <baseurl>http://192.168.0.103:1935/vod/_definst_/mp4:output_4channels.mp4/</baseurl>
  
      <adaptationset mimetype="video/mp4" width="1024" height="512" par="1024:512" framerate="30000/1001" segmentalignment="true" startwithsap="1" subsegmentalignment="true" subsegmentstartswithsap="1">
  
          <segmenttemplate presentationtimeoffset="0" timescale="90000" media="chunk_ctvideo_rid$RepresentationID$_cs$Time$_w882219731_mpd.m4s" initialization="chunk_ctvideo_rid$RepresentationID$_cinit_w882219731_mpd.m4s">
  
              <segmenttimeline>
  
                  <s t="0" d="1582650"></s>
  
              </segmenttimeline>
  
          </segmenttemplate>
  
          <representation codecs="avc1.42c01e" sar="1:1" bandwidth="894760"></representation>
  
      </adaptationset>
  
      <adaptationset mimetype="audio/mp4" lang="eng" segmentalignment="true" startwithsap="1" subsegmentalignment="true" subsegmentstartswithsap="1">
  
          <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
  
          <segmenttemplate presentationtimeoffset="0" timescale="48000" media="chunk_ctaudio_rid$RepresentationID$_cs$Time$_w882219731_mpd.m4s" initialization="chunk_ctaudio_rid$RepresentationID$_cinit_w882219731_mpd.m4s">
  
              <segmenttimeline>
  
                  <s t="0" d="844080"></s>
  
              </segmenttimeline>
  
          </segmenttemplate>
  
          <representation codecs="mp4a.40.2" audiosamplingrate="48000" bandwidth="265851">
  
          </representation>
  
      </adaptationset>
  
  </period>
  
  </mpd>

  HTML Player Code :

  <code class="echappe-js">&lt;script src=&quot;http://cdn.dashjs.org/latest/dash.all.min.js&quot;&gt;&lt;/script&gt;
  
         
  
  

• In Android how to add text as watermark on already recorded video with ffmpeg ?

  23 juillet 2016, par jullie

  I am trying to set text as a watermark on already recorded video but it is not working. As I tried image.png as a water mark and it works by following this url http://androidwarzone.blogspot.in/2011/12/ffmpeg4android.html

  Command for apply image as watermark on already recorded video :

  String[] complexCommand = {"ffmpeg","-y" ,"-i", videoPathHere,"-strict",
  
  "experimental", "-vf", "movie=" 
  
  + Environment.getExternalStorageDirectory().getAbsolutePath() 
  
  + "/watermarkImg.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]",
  
  "-s", "160x120","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab", "48000", 
  
  "-ac", "2", "-ar", "22050", 
  
  Environment.getExternalStorageDirectory().getAbsolutePath()+"/watermark.mp4"}; 

  but when I tried to implement text as watermark its not working :

  String[] complexCommand = {"ffmpeg", "-y" , "-i", videoPathHere, "-strict", "experimental", 
  
  "-vf", "drawtext=fontfile=" + file + ":text=TestText", "-s", "160x120", "-r", "30", 
  
  "-b", "15496k", "-vcodec", "mpeg4", "-ab", "48000", "-ac", "2", "-ar", "22050", 
  
  Environment.getExternalStorageDirectory().getAbsolutePath()+"/watermark.mp4"}; 

  Even I tried this also
  http://video.stackexchange.com/questions/15551/ffmpeg-drawtext-filter-create-transparent-background-with-text

  but it is also not working in my case.

  So, what is going wrong with adding text as watermark ?

  I make changes in commenad from ;text=TestText to :text=TestText then it shows given error.

  07-23 10:58:07.595 : I/Videokit(28832) : libvideokit.so loaded
  07-23 10:58:07.595 : I/Videokit(28832) : args is not NULL
  07-23 10:58:07.595 : I/Videokit(28832) : more then one arg
  07-23 10:58:07.595 : I/Videokit(28832) : function symbol found
  07-23 10:58:07.595 : D/Videokit(28832) : Calling videokit run via loader
  07-23 10:58:07.595 : I/Videokit(28832) : vk ffmpeg sdcardPath : /data/user/0/valamovie.com/files/
  07-23 10:58:07.595 : D/Videokit(28832) : call licenseCheckComplex
  07-23 10:58:07.595 : I/Videokit(28832) : licenseCheck in path : /data/user/0/valamovie.com/files/
  07-23 10:58:07.595 : I/Videokit(28832) : isLicExistsComplex...
  07-23 10:58:07.595 : I/Videokit(28832) : trying to open /data/user/0/valamovie.com/files//ffmpeglicense.lic
  07-23 10:58:07.595 : I/Videokit(28832) : license file found...
  07-23 10:58:07.596 : I/Videokit(28832) : You used 0 of your 15 trial days.
  07-23 10:58:07.596 : D/Videokit(28832) : license check rc : 0
  07-23 10:58:07.596 : D/Videokit(28832) : run() called
  07-23 10:58:07.670 : A/libc(28832) : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x10 in tid 28832 (valamovie.com)
  07-23 10:58:07.771 : A/DEBUG(152) : * *
  07-23 10:58:07.771 : A/DEBUG(152) : Build fingerprint : ’Lava/PixelV1/PixelV1_sprout:6.0/MRA58V/eng.admin.20160419.120644:user/release-keys’
  07-23 10:58:07.771 : A/DEBUG(152) : Revision : ’0’
  07-23 10:58:07.771 : A/DEBUG(152) : ABI : ’arm’
  07-23 10:58:07.771 : A/DEBUG(152) : pid : 28832, tid : 28832, name : valamovie.com >>> valamovie.com <<<
  07-23 10:58:07.772 : A/DEBUG(152) : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x10
  07-23 10:58:07.789 : A/DEBUG(152) : r0 00000000 r1 00000001 r2 0000001e r3 00000000
  07-23 10:58:07.789 : A/DEBUG(152) : r4 b8ae87c0 r5 b8ae7fb0 r6 00000000 r7 b8b22500
  07-23 10:58:07.789 : A/DEBUG(152) : r8 9ee64cc4 r9 b8a1fad0 sl b8b625d0 fp 00000000
  07-23 10:58:07.789 : A/DEBUG(152) : ip b6d875dc sp bea3e340 lr 9e3969ac pc 9e395bb8 cpsr 600f0010
  07-23 10:58:07.791 : A/DEBUG(152) : backtrace :
  07-23 10:58:07.791 : A/DEBUG(152) : #00 pc 0007cbb8 /data/app/valamovie.com-1/lib/arm/libvideokit.so
  07-23 10:58:08.503 : W/ActivityManager(557) : Force finishing activity valamovie.com/.Ui.addNewProject
  07-23 10:58:08.504 : A/DEBUG(152) : Tombstone written to : /data/tombstones/tombstone_00
  07-23 10:58:08.504 : E/DEBUG(152) : AM write failed : Broken pipe
  07-23 10:58:08.505 : I/BootReceiver(557) : Copying /data/tombstones/tombstone_00 to DropBox (SYSTEM_TOMBSTONE)
  07-23 10:58:08.527 : W/InputDispatcher(557) : channel ’86e38ae valamovie.com/valamovie.com.Ui.MainActivity (server)’ Consumer closed input channel or an error occurred. events=0x9
  07-23 10:58:08.528 : E/InputDispatcher(557) : channel ’86e38ae valamovie.com/valamovie.com.Ui.MainActivity (server)’ Channel is unrecoverably broken and will be disposed !
  07-23 10:58:08.529 : W/InputDispatcher(557) : channel ’e50713f valamovie.com/valamovie.com.Ui.addNewProject (server)’ Consumer closed input channel or an error occurred. events=0x9
  07-23 10:58:08.529 : E/InputDispatcher(557) : channel ’e50713f valamovie.com/valamovie.com.Ui.addNewProject (server)’ Channel is unrecoverably broken and will be disposed !
  07-23 10:58:08.531 : W/ActivityManager(557) : Exception thrown during pause

• FFMPEG - Convert MKV to MP4 with all streams (subtitles) and watermark

  24 juillet 2016, par ShinJii

  I spent few hours researching and still have problem...
  I want to convert .mkv file to .mp4 with watermark and subtitles (from mkv).

  I tried few commands but always error or success with watermark without subtitles.
  Here are some commands I tried (not all) :

  Partial Success - some files are converted with subtitles, but I have 153 files that are converted without subtitles... (both from .mkv to .mp4) :

  ffmpeg -i 025.mkv -vf "movie=logovideo2.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10,subtitles=025.mkv [out]" 25.mp4
  
  
  
  ffmpeg -i 001.mkv -i logovideo2.png -filter_complex "[0:v][1:v]overlay=0:0,subtitles=001.mkv[out]" -map "[out]" -map 0:a -c:s ass 001.mp4

  Fail - command with error :

  ffmpeg -i 001.mkv -i logovideo2.png -filter_complex "[0:v][1:v]overlay=0:0[out]" -map "[out]" -map 0:a -map 0:s -c:s ass 001.mp4

  CODE (with error) :

  ffmpeg version N-81036-g2b14204 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
  
    configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libass
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 50.100 / 57. 50.100
  
    libavformat    57. 42.100 / 57. 42.100
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 47.100 /  6. 47.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, matroska,webm, from '001.mkv':
  
    Metadata:
  
      title           : DB
  
      encoder         : libebml v1.2.1 + libmatroska v1.1.1
  
      creation_time   : 2011-09-15 16:44:37
  
    Duration: 00:24:39.37, start: 0.000000, bitrate: 1429 kb/s
  
      Stream #0:0(jpn): Audio: vorbis, 48000 Hz, stereo, fltp (default)
  
      Stream #0:1: Video: h264 (High), yuv420p, 720x540 [SAR 1:1 DAR 4:3], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
  
      Stream #0:2(pol): Subtitle: ass (default)
  
      Metadata:
  
        title           : Grupa
  
  Input #1, png_pipe, from 'logovideo2.png':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Video: png, rgba(pc), 235x50 [SAR 2835:2835 DAR 47:10], 25 tbr, 25 tbn, 25 tbc
  
  File '001.mp4' already exists. Overwrite ? [y/N] y
  
  [libx264 @ 0x43c7a80] using SAR=1/1
  
  [libx264 @ 0x43c7a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x43c7a80] profile High, level 3.0
  
  [libx264 @ 0x43c7a80] 264 - core 148 r2 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=23 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
  
  **[mp4 @ 0x442c9e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
      Last message repeated 2 times
  
  [mp4 @ 0x442c9e0] Could not find tag for codec ass in stream #2, codec not currently supported in container**
  
  Output #0, mp4, to '001.mp4':
  
    Metadata:
  
      title           : DB
  
      encoder         : Lavf57.42.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x540 [SAR 1:1 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.50.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(jpn): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc57.50.100 aac
  
      Stream #0:2(pol): Subtitle: ass (default)
  
      Metadata:
  
        title           : Grupa
  
        encoder         : Lavc57.50.100 ass
  
  Stream mapping:
  
    Stream #0:1 (h264) -> overlay:main (graph 0)
  
    Stream #1:0 (png) -> overlay:overlay (graph 0)
  
    overlay (graph 0) -> Stream #0:0 (libx264)
  
    Stream #0:0 -> #0:1 (vorbis (native) -> aac (native))
  
    Stream #0:2 -> #0:2 (ass (ssa) -> ass (native))
  
  **Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument**
  
  [aac @ 0x43bf600] Qavg: -nan