Hi ffmpeg developers, I want to submit the following patch. It's a minor thing that improves the filtering_video.c to demo chaining of vfilters.
>From ceda852421e51712352ab2b1230b715ea0073f6a Mon Sep 17 00:00:00 2001 From: Harshit Mittal <h.mitta...@gmail.com> Date: Wed, 5 Aug 2015 12:41:49 -0700 Subject: [PATCH 1/2] better demo ffmpeg filters; demos chaining the filters --- doc/examples/filtering_video.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/examples/filtering_video.c b/doc/examples/filtering_video.c index c02040a..7c710e2 100644 --- a/doc/examples/filtering_video.c +++ b/doc/examples/filtering_video.c @@ -38,7 +38,7 @@ #include <libavfilter/buffersrc.h> #include <libavutil/opt.h> -const char *filter_descr = "scale=78:24"; +const char *filter_descr = "[in] scale=78:24 [scl]; [scl] transpose=cclock"; static AVFormatContext *fmt_ctx; static AVCodecContext *dec_ctx; -- 2.5.0 >From ef9df636f2e6181c887c8109081f4b72ee794cec Mon Sep 17 00:00:00 2001 From: Harshit Mittal <h.mitta...@gmail.com> Date: Thu, 6 Aug 2015 12:40:40 -0700 Subject: [PATCH 2/2] demo without the pads --- doc/examples/filtering_video.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/examples/filtering_video.c b/doc/examples/filtering_video.c index 7c710e2..5685380 100644 --- a/doc/examples/filtering_video.c +++ b/doc/examples/filtering_video.c @@ -38,7 +38,10 @@ #include <libavfilter/buffersrc.h> #include <libavutil/opt.h> -const char *filter_descr = "[in] scale=78:24 [scl]; [scl] transpose=cclock"; +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 AVCodecContext *dec_ctx; -- 2.5.0 FROM: https://github.com/FFmpeg/FFmpeg/pull/145
ffmpeg_vfilters_demo.patch
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