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• tools/python : add script to convert TensorFlow model (.pb) to native model (.model)

  13 juin 2019, par Guo, Yejun

  tools/python : add script to convert TensorFlow model (.pb) to native model (.model)
  For example, given TensorFlow model file espcn.pb,
  
  to generate native model file espcn.model, just run :
  
  python convert.py espcn.pb
  In current implementation, the native model file is generated for
  
  specific dnn network with hard-code python scripts maintained out of ffmpeg.
  
  For example, srcnn network used by vf_sr is generated with
  
  https://github.com/HighVoltageRocknRoll/sr/blob/master/generate_header_and_model.py#L85
  In this patch, the script is designed as a general solution which
  
  converts general TensorFlow model .pb file into .model file. The script
  
  now has some tricky to be compatible with current implemention, will
  
  be refined step by step.
  The script is also added into ffmpeg source tree. It is expected there
  
  will be many more patches and community needs the ownership of it.
  Another technical direction is to do the conversion in c/c++ code within
  
  ffmpeg source tree. While .pb file is organized with protocol buffers,
  
  it is not easy to do such work with tiny c/c++ code, see more discussion
  
  at http://ffmpeg.org/pipermail/ffmpeg-devel/2019-May/244496.html. So,
  
  choose the python script.
  Signed-off-by : Guo, Yejun <yejun.guo@intel.com>
  

  • [DH] .gitignore
  • [DH] tools/python/convert.py
  • [DH] tools/python/convert_from_tensorflow.py

• Fontconfig error : Cannot load default config file

  28 juin 2019, par sachin

  I am trying to add text in the video, but I am getting -

  Fontconfig error : Cannot load default config file
  [Parsed_drawtext_0 @ 0xea1aeaa0] impossible to init fontconfig

  below cmd to add text using FFmpeg lib-

  String[] cmd = new String[]
  "-i", savedVideoFilePath, "-vf", "drawtext=text="+"’"+timeStamp+"’"+" :
  fontfile=/android_asset/fonts/Poppins-Medium.ttf : fontcolor=white :
  fontsize=24 : x=(w-tw)/2 : y=(h/PHI)+th box=0 :","-codec:a" ,"copy" ,
  output_path  ;

  log details -

  Error opening filters ! 2019-06-10 18:04:58.027
  18678-18678/com.rs.vir.debug E/FFMPEG FAilure : FAILED with output :
  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/VIR_Customer/EVINV12207201906100303240000/Videos/sample.mp4’ :
  Metadata :
  major_brand : mp42
  minor_version : 0
  compatible_brands : isommp42
  creation_time : 2019-06-10 12:34:55
  com.android.version : 8.1.0
  Duration : 00:00:06.66, start : 0.000000, bitrate : 3724 kb/s
  Stream #0:0(eng) : Video : h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x480, 3464 kb/s, SAR 1:1
  DAR 3:2, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
  Metadata :
  rotate : 90
  creation_time : 2019-06-10 12:34:55
  handler_name : VideoHandle
  Side data :
  displaymatrix : rotation of -90.00 degrees
  Stream #0:1(eng) : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
  Metadata :
  creation_time : 2019-06-10 12:34:55
  handler_name : SoundHandle
  Fontconfig error : Cannot load default config file
  [Parsed_drawtext_0 @ 0xea1aeaa0] impossible to init fontconfig
  [AVFilterGraph @ 0xea1cb040] Error initializing filter ’drawtext’ with args
  ’text=java.util.GregorianCalendar[time=1560170097814,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=libcore.util.ZoneInfo[id="Asia/Kolkata",mRawOffset=19800000,mEarliestRawOffset=19800000,mUseDst=false,mDstSavings=0,transitions=5],firstDayOfWeek=2,minimalDaysInFirstWeek=4,ERA=1,YEAR=2019,MONTH=5,WEEK_OF_YEAR=24,WEEK_OF_MONTH=2,DAY_OF_MONTH=10,DAY_OF_YEAR=161,DAY_OF_WEEK=2,DAY_OF_WEEK_IN_MONTH=2,AM_PM=1,HOUR=6,HOUR_OF_DAY=18,MINUTE=4,SECOND=57,MILLISECOND=814,ZONE_OFFSET=19800000,DST_OFFSET=0] :
  fontfile=/android_asset/fonts/Poppins-Medium.ttf : fontcolor=white :
  fontsize=24 : x=(w-tw)/2 : y=(h/PHI)+th box=0 :’
  Error opening filters !

  please give me the solution for this.

• Ffmpeg stream stops after a couple of seconds

  28 juin 2019, par Connor Woodford

  I have an http stream of an mkv file that I am trying to transcode to mp4 via ffmpeg. Here is the command I enter to start the stream ffmpeg -i "input.mkv" -f mpeg1video -vf "scale=640:480" -r 20 "http://localhost:port". The stream starts fine. Here is what the stream gives me at first :

  Metadata:
     title           : Chapter 17
   Stream #0:0(eng): Video: mpeg1video, yuv420p, 640x480 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 24 fps, 24 tbn, 24 tbc
   Metadata:
     BPS-eng         : 31632108
     DURATION-eng    : 02:03:42.289875000
     NUMBER_OF_FRAMES-eng: 177957
     NUMBER_OF_BYTES-eng: 29347831113
     SOURCE_ID-eng   : 001011
     _STATISTICS_WRITING_APP-eng: MakeMKV v1.14.2 win(x64-release)
     _STATISTICS_WRITING_DATE_UTC-eng: 2019-06-18 22:53:22
     _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
     encoder         : Lavc58.31.102 mpeg1video
   Side data:
     cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame=  111 fps=0.0 q=6.2 size=     212kB time=00:00:04.54 bitrate= 382.2kbits/s speed=8.82x

  but after this shows up it hangs for a while then it gives me this :

  av_interleaved_write_frame(): Unknown errorime=00:00:05.24 bitrate= 788.3kbits/s speed=10.5x
  
  Error writing trailer of http://192.168.1.19:4012: Error number -10054 occurred
  
  frame=  128 fps=1.1 q=12.1 Lsize=     646kB time=00:00:05.84 bitrate= 905.0kbits/s speed=0.0487x
  
  video:343kB audio:274kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.639489%
  
  [http @ 000001cb1fdac780] URL read error:  -10054
  
  Conversion failed!

  Here is my http server in node.js :

  const express = require('express')
  
  const port = port
  
  var ffmpeg = require('ffmpeg');
  
  var http = require('http')
  
  
  
  var server = http.createServer(function(req, res) {
  
      res.writeHead(200, {'Content-Type': 'video/mp4'});
  
  })
  
  
  
  server.listen(port, 'ipAddress')
  
  console.log(`Example app on port ${port}!`);