[FFmpeg-user] screencast in WinXP

[Pablo Rodríguez]

Hi there,

I need to record some screencasts with audio in a computer using WinXP.

I followed the instructions provided at
https://trac.ffmpeg.org/wiki/Capture/Desktop#Generalnote, but I’m afraid
they didn’t work.

Here you have the uncut sample:

C:\>ffmpeg -f dshow -i
video="screen-capture-recorder":audio="Microphone" -vcode
c libx264 -crf 0 -preset ultrafast -acodec pcm_s16le output.flv
ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg
developers
  built on Sep 15 2014 22:02:10 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-libbs2b
--enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc
--enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora
--enable-libtwolame --en
able-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      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
[dshow @ 02ed89e0] Could not enumerate video devices.
video=screen-capture-recorder:audio=Microphone: Input/output error

Listing devices didn’t work either:

C:>ffmpeg -list_devices true -f dshow -i dummy
ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg
developers
  built on Sep 15 2014 22:02:10 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-libbs2b
--enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc
--enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora
--enable-libtwolame --en
able-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      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
[dshow @ 02dde020] DirectShow video devices
[dshow @ 02dde020] Could not enumerate video devices.
[dshow @ 02dde020] DirectShow audio devices
[dshow @ 02dde020]  "Realtek HD Audio Input"
[dshow @ 02dde020]  "Realtek HD Digital input"
dummy: Immediate exit requested

What am I doing wrong?

Many thanks for your work,


Pablo
-- 
http://www.ousia.tk