Hi,
I use the below command to run colorkey filter, but ffmpeg report there is no
colorkey filter:
[root@localhost ffmpegOverlay]# ffmpeg -i ./transparent_3.png -vf
colorkey=green ./transparent_3_test1.png
ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
configuration: --enable-gpl --enable-libx264
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, png_pipe, from './transparent_3.png':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: png, rgba(pc), 256x256, 25 tbr, 25 tbn, 25 tbc
[AVFilterGraph @ 0x1d1e900] No such filter: 'colorkey'
Error opening filters!
I find ffmpeg supports colorkey filter as shown below. But why does ffmpeg
report there is no colorkey filter?
http://ffmpeg.org/ffmpeg-filters.html#colorkey
Thanks!
Andrew
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