[FFmpeg-cvslog] lavfi/showspectrum: set default height to 512
Rudolf Polzer
git at videolan.org
Sun Feb 3 18:08:32 CET 2013
ffmpeg | branch: master | Rudolf Polzer <divverent at xonotic.org> | Sun Feb 3 17:03:39 2013 +0000| [773fc6e0c7122740c3dd6530df6406282ced34da] | committer: Paul B Mahol
lavfi/showspectrum: set default height to 512
Only power-of-two FFTs are supported; so to get a full spectrum
(that is, one up to Nyquist), the height must be a power of two.
Therefore, change the default height from 480 to 512.
Signed-off-by: Rudolf Polzer <divverent at xonotic.org>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=773fc6e0c7122740c3dd6530df6406282ced34da
---
doc/filters.texi | 2 +-
libavfilter/avf_showspectrum.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 442fe35..fdbe3b7 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -6019,7 +6019,7 @@ spectrum.
The filter accepts the following named parameters:
@table @option
@item size, s
-Specify the video size for the output. Default value is @code{640x480}.
+Specify the video size for the output. Default value is @code{640x512}.
@item slide
Specify if the spectrum should slide along the window. Default value is
@code{0}.
diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index 977fca9..d8aed0d 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -51,8 +51,8 @@ typedef struct {
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption showspectrum_options[] = {
- { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, FLAGS },
- { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, FLAGS },
+ { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
+ { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
{ "slide", "set sliding mode", OFFSET(sliding), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS },
{ NULL },
};
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