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• av_format/hlsenc : fix %v handling by format_name function

  17 juin 2019, par Bodecs Bela

  av_format/hlsenc : fix %v handling by format_name function
  Hi All,
  When multiple variant streams are specified by var_stream_map option, %v
  
  placeholder in various names ensures that each variant has its unique
  
  names. Most of %v handlng is done in format_name function. Currently
  
  in this function the result buffer is the same as the
  
  input pattern buffer, so you must allocate it before calling format_name
  
  function. It also means, that it is silently assumed that the result
  
  string will NOT be
  
  longer that the pattern string. It is true most of the time, because %v
  
  may appear only once in the pattern string and number of variant streams
  
  is less than 100 in practical cases. But theoretically it will fail if
  
  specified number of variant streams is greater than 100 (i.e. longer
  
  than 2 digits).
  
  This patch fixes this behaviour by altering format_name function to
  
  allocate the
  
  result buffer and return it to the caller.
  Please, review this patch.
  best,
  Bela
  
  >From 6377ebee8a106a9684d41b270c7d6c8e57cd3e7b Mon Sep 17 00:00:00 2001
  
  From : Bela Bodecs <bodecsb@vivanet.hu>
  
  Date : Mon, 17 Jun 2019 14:31:36 +0200
  
  Subject : [PATCH] av_format/hlsenc : fix %v handling by format_name function
  When multiple variant streams are specified by var_stream_map option, %v
  
  placeholder in various names ensures that each variant has its unique
  
  names. Most of %v handlng is done in format_name function. Currently
  
  in this function the result buffer is the same as the input pattern
  
  buffer, so you must allocate it before calling format_name function. It
  
  also means, that it is silently assumed that the result string will NOT
  
  be longer that the pattern string. It is true most of the time, because
  
  %v may appear only once in the pattern string and number of variant
  
  streams is less than 100 in practical cases. But theoretically it will
  
  fail if specified number of variant streams is greater than 100. This
  
  patch fixes this behaviour by altering format_name function to allocate
  
  the result buffer and return it to the caller.
  Signed-off-by : Bela Bodecs <bodecsb@vivanet.hu>
  

  • [DH] libavformat/hlsenc.c

• No such filter : '"' Error initializing complex filters [duplicate]

  28 juin 2019, par sachin

  This question already has an answer here :

  • Fontconfig error : Cannot load default config file
    
    2 answers
    

  I am trying add some text on video, but I am getting :

  No such filter:
  
    Error initializing complex filters.
  
    Invalid argument

  Below command using for adding text -

  In Java :

  String complexCommand = "ffmpeg -i "+ savedVideoFilePath +" -filter_complex \"[0:v][1:v]overlay=10:10,drawtext=text="+"'"+ timestamp +"'" + "\""+ " -c:a copy -movflags +faststart " +output_path;

  In string format :

  ffmpeg -i /data/user/0/com.rs.vir.debug/files/VIR_Customer/EVINV12207201906100303240000/Videos/sample.mp4 -filter_complex "[0:v][1:v]overlay=10:10,drawtext=text='12-08-2019_11:00pm'" -c:a copy -movflags +faststart /data/user/0/com.rs.vir.debug/files/VIR_Customer/EVINV12207201906100303240000/Videos/output_1052019163054.mp4

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
        built with gcc 4.8 (GCC)
  
        configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
        libavutil      55. 17.103 / 55. 17.103
  
        libavcodec     57. 24.102 / 57. 24.102
  
        libavformat    57. 25.100 / 57. 25.100
  
        libavdevice    57.  0.101 / 57.  0.101
  
        libavfilter     6. 31.100 /  6. 31.100
  
        libswscale      4.  0.100 /  4.  0.100
  
        libswresample   2.  0.101 /  2.  0.101
  
        libpostproc    54.  0.100 / 54.  0.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.rs.vir.debug/files/appname/videos/sample.mp4':
  
        Metadata:
  
          major_brand     : mp42
  
          minor_version   : 0
  
          compatible_brands: isommp42
  
          creation_time   : 2019-06-10 10:18:21
  
          com.android.version: 8.1.0
  
        Duration: 00:00:12.18, start: 0.000000, bitrate: 2176 kb/s
  
          Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x480, 1920 kb/s, SAR 1:1 DAR 3:2, 16.66 fps, 16.67 tbr, 90k tbn, 180k tbc (default)
  
          Metadata:
  
            rotate          : 90
  
            creation_time   : 2019-06-10 10:18:21
  
            handler_name    : VideoHandle
  
          Side data:
  
            displaymatrix: rotation of -90.00 degrees
  
          Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 253 kb/s (default)
  
          Metadata:
  
            creation_time   : 2019-06-10 10:18:21
  
            handler_name    : SoundHandle
  
      [AVFilterGraph @ 0xe772d080] No such filter: '"'
  
      Error initializing complex filters.
  
      Invalid argument

  Anything I need to add or change command, give me any idea ?

• Shaka Player : ignore empty AdaptationSet

  24 juin 2019, par Mitya

  I’m trying to play DASH stream in Shaka Player.
  Sometimes the stream doesn’t have an audio source and its manifest file contains an empty AdaptationSet entry.
  In this case Shaka Player returns the manifest parsing error :

  | DASH_EMPTY_ADAPTATION_SET | 4003 | number |  The DASH Manifest contained an AdaptationSet with no Representations. |

  Is it possible to ignore this error somehow and play the video without audio source ?

  Example of manifest 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="dynamic" minimumupdateperiod="PT4S" suggestedpresentationdelay="PT4S" availabilitystarttime="2019-06-24T13:38:04Z" publishtime="2019-06-24T13:38:34Z" timeshiftbufferdepth="PT14.9S" minbuffertime="PT9.9S">
  
      <programinformation>
  
          
  
      </programinformation>
  
      <period start="PT0.0S">
  
          <adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true">
  
              <representation mimetype="video/mp4" codecs="avc1.640028" bandwidth="2000000" width="1920" height="1080" framerate="20/1">
  
                  <segmenttemplate timescale="10240" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="5">
  
                      <segmenttimeline>
  
                          <s t="201697" d="51190" r="2"></s>
  
                      </segmenttimeline>
  
                  </segmenttemplate>
  
              </representation>
  
          </adaptationset>
  
          <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true">
  
          </adaptationset>
  
      </period>
  
  </mpd>