[FFmpeg-user] WMV conversion for Powerpoint failing recently?

[Juan Garrido]

Hi,

I used ffmpeg to convert videos to WMV (in Linux) and then embed them in 
Powerpoint (in Windows)

Since a couple of weeks, the conversion still succeeds, but when I embed them 
in Powerpoint, the WMV videos are not playing anymore and sometimes the 
computer freezes. Playing fine in VLC.

Is anyone experiencing the same problem?

I use the following syntax:
/usr/local/bin/ffmpeg -i 'test.mp4' -vcodec wmv2 -acodec wmav2 -ac 2 -qmin 6 -
qmax 8 -b:a 128k -ar 44100 -r 25 -nostats -y 'test.wmv'

ffmpeg version N-40696-gb977779 Copyright (c) 2000-2012 the FFmpeg developers
  built on May 15 2012 14:26:38 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --enable-shared --enable-
nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-
libopencore-amrnb --enable-libopencore-amrwb --enable-libvorbis --enable-
libtheora --enable-libvpx --enable-libspeex --enable-libxvid --enable-libx264 
--disable-network --disable-stripping --enable-libschroedinger --enable-libgsm 
--enable-avfilter --enable-pthreads --disable-doc --disable-ffplay --disable-
ffserver --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib 
--disable-protocol=httpproxy --enable-bzlib --enable-libvpx
  libavutil      51. 51.100 / 51. 51.100
  libavcodec     54. 21.101 / 54. 21.101
  libavformat    54.  5.100 / 54.  5.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 73.100 /  2. 73.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.3.1
  Duration: 00:00:55.33, start: 0.000000, bitrate: 505 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 
432x320, 374 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 
127 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
[buffer @ 0x652520] w:432 h:320 pixfmt:yuv420p tb:1/1000000 sar:0/1 
sws_param:flags=2
[buffersink @ 0x634380] No opaque field provided
Output #0, asf, to 'test.wmv':                                                                                                                                  
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    WM/EncodingSettings: Lavf54.5.100
    Stream #0:0(und): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 432x320, 
q=6-8, 200 kb/s, 1k tbn, 25 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, 
s16, 127 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> wmv2)
  Stream #0:1 -> #0:1 (aac -> wmav2)
Press [q] to stop, [?] for help
frame= 1383 fps=578 q=2.0 Lsize=    2733kB time=00:00:55.21 bitrate= 
405.4kbits/s dup=553 drop=0    
video:1691kB audio:863kB global headers:0kB muxing overhead 6.960113%