Durante il tentativo di convertire wmv in gif animate usando ffmpeg in Windows 7, ho riscontrato un problema.
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\>ffmpeg -i test.wmv test.gif
ffmpeg version N-39877-g4fa706a Copyright (c) 2000-2012 the FFmpeg developers
built on Apr 16 2012 14:57:12 with gcc 4.6.3
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass
--enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable
-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libope
njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libth
eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
nable-zlib
libavutil 51. 46.100 / 51. 46.100
libavcodec 54. 14.101 / 54. 14.101
libavformat 54. 3.100 / 54. 3.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 70.100 / 2. 70.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
[asf @ 0000000001f3ead0] Could not find codec parameters (Video: none (MTS2 / 0x
3253544D), 800x400, 30000 kb/s)
test.wmv: could not find codec parameters
Che cosa significa e come posso risolverlo?
ffmpeg -i test.wmv … -s:v 400x200 out.gif
. Guarda la risposta che avresti dovuto già vedere per le opzioni di compressione: superuser.com/a/436109/48078