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• How to make the cygwin fontconfig package inherit Windows fonts ? [migrated]

  22 août 2014, par Witiko

  I’m using a cygwin64 build of ffmpeg (1, 2) to burn subtitles into a video file as follows :

  $ ffmpeg -i file.mp4 -vf subtitles=file.srt file.ts
  
  ffmpeg version 1.2.3 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Sep 18 2013 01:11:22 with gcc 4.8.1 (GCC)
  
    configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/bin --incdir=/usr/include --mandir=/usr/share/man --disable-static --enable-shared --enable-gpl --enable-version3 --enable-postproc --enable-swscale --enable-avfilter --enable-pthreads --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcdio --enable-libcelt --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libtwolame --disable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --disable-libxavs --enable-openal --enable-x11grab --enable-zlib --disable-debug --disable-optimizations --enable-yasm --disable-stripping
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 2013-07-18 23:29:41
  
      encoder         : Lavf51.12.1
  
    Duration: 00:21:59.66, start: 0.000000, bitrate: 5461 kb/s
  
      Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 5135 kb/s, 59.94 fps, 59.94 tbr, 60k tbn, 119.88 tbc
  
      Metadata:
  
        creation_time   : 2013-07-19 02:21:28
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 319 kb/s
  
      Metadata:
  
        creation_time   : 2013-07-19 02:21:28
  
        handler_name    : SoundHandler
  
  [srt @ 0x600057e80] Estimating duration from bitrate, this may be inaccurate
  
  Output #0, mpegts, to 'file.ts':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.63.104
  
      Stream #0:0(eng): Video: mpeg2video, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 59.94 tbc
  
      Metadata:
  
        creation_time   : 2013-07-19 02:21:28
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        creation_time   : 2013-07-19 02:21:28
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> mpeg2video)
  
    Stream #0:1 -> #0:1 (aac -> mp2)
  
  Press [q] to stop, [?] for help
  
  [Parsed_subtitles_0 @ 0x6000229c0] Neither PlayResX nor PlayResY defined. Assuming 384x288

  But the subtitles do not appear in the resulting video stream at all.

  The [Parsed_subtitles_0 @ 0x6000229c0] Neither PlayResX nor PlayResY defined. Assuming 384x288 warning is not a part of the problem, as converting the subtitles to .ass via ffmpeg -i file.srt file.ass and specifying the PlayResX and Y values makes the warning disappear without solving the original issue.

  I know that the libass library, which provides the subtitles filter to ffmpeg, uses fontconfig, which is known not to work out-of-box under windows. However, the lack of any fontconfig warnings makes me believe that this is not the problem here. Any leads as to what might the cause of the problem be ?

  EDIT : I have downloaded and compiled ffmpeg myself :

  $ git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg
  
  $ cd ffmpeg
  
  $ ./configure --enable-static --disable-shared --enable-libass
  
  $ make

  The output of the conversion ./ffmpeg -i file.mp4 -vf subtitles=file.srt file.ts is identical except for the fact that no warning messages get printed this time around. I’m looking into whether the fontconfig library configuration could be the culprit.

• ffplay : fix borderless mode on Windows

  3 février 2017, par Marton Balint

  ffplay : fix borderless mode on Windows
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] ffplay.c

• How to record windows screen with ffmpeg [on hold]

  30 janvier 2017, par Soer

  I want to write application that could recording screen as a video in c++

  During the search I found ffmpeg can done that.

  What examples should I use to create a program ?

  I use the window api

  I can load bitmaps into memory.

  ---

  What I want to do is :

  1. Loads 30 bitmaps in memory in one second.

  2. Generate video using multiple bitmaps.