Example output for command: ffmpeg -h filters=overlay
Filter overlay
Overlay a video source on top of the input.
slice threading supported
Inputs:
#0: main (video), Formats: Dynamic, Default: [yuv420p, yuvj420p,
yuva420p, nv12, nv21]
#1: overlay (video), Formats: Dynamic, Default: [yuva420p]
Outputs:
#0: default (video), Formats: Dynamic, Default: [yuv420p, yuvj420p,
yuva420p, nv12, nv21]
overlay AVOptions:
[...]
Examples for what it prints in various cases
============================================
For pass-through filter links
"All (passthrough)"
For filters using query_formats
"Dynamic"
For filters using query_formats where a call to query_formats succeeds
"Dynamic, Default: [yuv420p, yuvj420p, yuva420p, nv12, nv21]"
For all other cases
"[s16p, s32p, fltp, dblp]"
Except when all formats are supported (number of formats equals number of
available formats)
"All"
----------------------------------------------------------------------------
v2: rebase and fix compiler warnings
softworkz (2):
avfilter/avfilter: add avfilter_print_config_formats()
ftools/opt_common: Print filter input/output formats in help output
doc/APIchanges | 3 ++
fftools/opt_common.c | 37 +++++++++----
libavfilter/avfilter.c | 102 +++++++++++++++++++++++++++++++++++-
libavfilter/avfilter.h | 12 +++++
libavfilter/avfiltergraph.c | 15 ++++--
libavfilter/internal.h | 9 ++++
libavfilter/version.h | 4 +-
7 files changed, 163 insertions(+), 19 deletions(-)
base-commit: 479747645f795b6f4f376578ea1556409f943c31
Published-As:
https://github.com/ffstaging/FFmpeg/releases/tag/pr-ffstaging-43%2Fsoftworkz%2Fsubmit_print_formats-v2
Fetch-It-Via: git fetch https://github.com/ffstaging/FFmpeg
pr-ffstaging-43/softworkz/submit_print_formats-v2
Pull-Request: https://github.com/ffstaging/FFmpeg/pull/43
Range-diff vs v1:
1: c9496ca671 ! 1: 5ae347e40c avfilter/avfilter: add
avfilter_print_config_formats()
@@ doc/APIchanges: libavutil: 2021-04-27
+2022-10-11 - xxxxxxxxxx - lavf 59.50.100 - avfilter.h
+ Add add avfilter_print_config_formats().
-+
- 2022-10-05 - 37d5ddc317 - lavu 57.39.100 - cpu.h
- Add AV_CPU_FLAG_RVB_BASIC.
++
+ 2022-10-11 - xxxxxxxxxx - lavu 57.39.101 - pixfmt.h
+ Add AV_PIX_FMT_RGBF32 and AV_PIX_FMT_RGBAF32.
## libavfilter/avfilter.c ##
@@ libavfilter/avfilter.c: void avfilter_link_free(AVFilterLink **link)
av_freep(link);
}
-+static unsigned get_nb_pix_fmts()
++static unsigned get_nb_pix_fmts(void)
+{
+ unsigned i = 0;
+ while (av_pix_fmt_desc_get(i++)) {}
+ return i - 1;
+}
+
-+static unsigned get_nb_sample_fmts()
++static unsigned get_nb_sample_fmts(void)
+{
+ unsigned i = 0;
+ while (av_get_sample_fmt_name(i++)) {}
@@ libavfilter/avfiltergraph.c: static int query_formats(AVFilterGraph
*graph, void
- ret = filter_query_formats(f);
- else
- ret = ff_default_query_formats(f);
++
+ ret = ff_filter_query_formats(f);
if (ret < 0 && ret != AVERROR(EAGAIN))
return ret;
2: c99d278881 ! 2: 29389422a9 ftools/opt_common: Print filter input/output
formats in help output
@@ fftools/opt_common.c: static void show_help_filter(const char *name)
{
#if CONFIG_AVFILTER
const AVFilter *f = avfilter_get_by_name(name);
-- int i, count;
+ AVBPrint bp;
-+ int i, count, ret;
+ int i, count;
if (!name) {
- av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
@@ fftools/opt_common.c: static void show_help_filter(const char *name)
return;
}
--
ffmpeg-codebot
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