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• 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.

• ffmpeg how to stream video file in windows on http protocol

  16 août 2014, par Kipi

  I’m trying to stream avideo file to localhost http stream.
  my ffmpeg version details :

  ffmpeg version N-64307-g8657612 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Jun 29 2014 22:09:38 with gcc 4.8.3 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
  
  e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-
  
  libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope
  
  njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox
  
  r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
  
  libxavs --enable-libxvid --enable-decklink --enable-zlib
  
    libavutil      52. 90.101 / 52. 90.101
  
    libavcodec     55. 68.100 / 55. 68.100
  
    libavformat    55. 44.100 / 55. 44.100
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  9.100 /  4.  9.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfi
  
  le}... 

  when I use :

  C:\Users\USER>ffmpeg -re -i myfile.mp4 -f flv udp://localhost:1234
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'myfile.mp4':
  
  Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.44.100
  
      compilation     : 0
  
  Duration: 00:00:04.17, start: 0.036281, bitrate: 268 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480 [
  
  SAR 1:1 DAR 4:3], 132 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
      handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 12
  
  8 kb/s (default)
  
      Metadata:
  
      handler_name    : SoundHandler
  
  [flv @ 00000000003fc780] Using AVStream.codec.time_base as a timebase hint to th
  
  e muxer is deprecated. Set AVStream.time_base instead.
  
      Last message repeated 1 times
  
  Output #0, flv, to 'udp://localhost:1234':
  
  Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      compilation     : 0
  
      encoder         : Lavf55.44.100
  
      Stream #0:0(und): Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 640x48
  
  0 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 1k tbn, 25 tbc (default)
  
      Metadata:
  
      handler_name    : VideoHandler
  
      encoder         : Lavc55.68.100 flv
  
      Stream #0:1(und): Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz,
  
  stereo, fltp (default)
  
      Metadata:
  
      handler_name    : SoundHandler
  
      encoder         : Lavc55.68.100 libmp3lame
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (h264 (native) -> flv1 (flv))
  
  Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
  
  Press [q] to stop, [?] for help
  
  frame=    5 fps=0.0 q=2.0 size=      32kB time=00:00:00.44 bitrate= 591.6kbits/s
  
  frame=   18 fps= 18 q=3.6 size=      77kB time=00:00:00.94 bitrate= 668.8kbits/s
  
  frame=   30 fps= 20 q=8.4 size=     115kB time=00:00:01.46 bitrate= 642.5kbits/s

  its working.

  but when I use http:

  C:\Users\USER>ffmpeg -re -i myfile.mp4 -f flv http://localhost:1234
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'myfile.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.44.100
  
      compilation     : 0
  
    Duration: 00:00:04.17, start: 0.036281, bitrate: 268 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480 [
  
  SAR 1:1 DAR 4:3], 132 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 12
  
  8 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  http://localhost:1234: Input/output error

  I get Input/output error.

  in linux its working with ffserver.
  but in windows I get this exception.

• How to use ffmpeg.dmg on Mac same way as ffmpeg.exe on windows via bat files ? [on hold]

  25 janvier 2017, par EhabSherif

  I was wondering how can I use ffmpeg.dmg on Mac same way as ffmpeg.exe on windows via bat files ? without installing ffmpeg on the PC.

  For example if I wanted to create a thumbnial from video file I type this line in a text file and rename it to xxxx.bat and place it beside the exe

  ffmpeg.exe -i "input.mp4" -an -ss 00:00:02 -an -r 1 -vframes 1 -s 512x512 -y "output.jpg"

  anyway to do the same on mac ? I tried renaming ffmpeg.exe to ffmpeg.dmg and xxxx.bat to xxxx.command thought it was that simple :) but of course didn’t work.