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doc/examples/filtering_video: better demo ffmpeg filters; demos chaining the filters

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Harshit Mittal 2015-08-05 12:41:49 -07:00 committed by Michael Niedermayer
parent 24e0b14c4f
commit 53bf32fa42
1 changed files with 4 additions and 1 deletions
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doc/examples/filtering_video.c
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@ -38,7 +38,10 @@
#include <libavfilter/buffersrc.h> #include <libavfilter/buffersrc.h>
#include <libavutil/opt.h> #include <libavutil/opt.h>
const char *filter_descr = "scale=78:24"; const char *filter_descr = "scale=78:24,transpose=cclock";
/* other way:
scale=78:24 [scl]; [scl] transpose=cclock // assumes "[in]" and "[out]" to be input output pads respectively
*/
static AVFormatContext *fmt_ctx; static AVFormatContext *fmt_ctx;
static AVCodecContext *dec_ctx; static AVCodecContext *dec_ctx;