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lavc/{av1, h264, h265}_metadata_bsf: fix description of tick_rate 

Users may take the description literally which leads to inverted
results.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
Reviewed-by: Jun Zhao <barryjzhao@tencent.com
This commit is contained in:
Zhao Zhili 2021-08-27 15:13:42 +08:00 committed by Jun Zhao
parent 0154f142f3
commit c417616762
4 changed files with 7 additions and 7 deletions
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8
doc/bitstream_filters.texi
View File

@ -81,7 +81,7 @@ Top-left position.
@end table
@item tick_rate
Set the tick rate (@emph{num_units_in_display_tick / time_scale}) in
Set the tick rate (@emph{time_scale / num_units_in_display_tick}) in
the timing info in the sequence header.
@item num_ticks_per_picture
Set the number of ticks in each picture, to indicate that the stream
@ -244,7 +244,7 @@ Set the chroma sample location in the stream (see H.264 section
E.2.1 and figure E-1).
@item tick_rate
Set the tick rate (num_units_in_tick / time_scale) in the VUI
Set the tick rate (time_scale / num_units_in_tick) in the VUI
parameters. This is the smallest time unit representable in the
stream, and in many cases represents the field rate of the stream
(double the frame rate).
@ -352,8 +352,8 @@ Set the chroma sample location in the stream (see H.265 section
E.3.1 and figure E.1).
@item tick_rate
Set the tick rate in the VPS and VUI parameters (num_units_in_tick /
time_scale). Combined with @option{num_ticks_poc_diff_one}, this can
Set the tick rate in the VPS and VUI parameters (time_scale /
num_units_in_tick). Combined with @option{num_ticks_poc_diff_one}, this can
set a constant framerate in the stream. Note that it is likely to be
overridden by container parameters when the stream is in a container.

2
libavcodec/av1_metadata_bsf.c
View File

@ -194,7 +194,7 @@ static const AVOption av1_metadata_options[] = {
{ "colocated", "Top-left chroma sample position", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV1_CSP_COLOCATED }, .flags = FLAGS, .unit = "csp" },
{ "tick_rate", "Set display tick rate (num_units_in_display_tick / time_scale)",
{ "tick_rate", "Set display tick rate (time_scale / num_units_in_display_tick)",
OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
{ .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
{ "num_ticks_per_picture", "Set display ticks per picture for CFR streams",

2
libavcodec/h264_metadata_bsf.c
View File

@ -626,7 +626,7 @@ static const AVOption h264_metadata_options[] = {
OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT,
{ .i64 = -1 }, -1, 6, FLAGS },
{ "tick_rate", "Set VUI tick rate (num_units_in_tick / time_scale)",
{ "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)",
OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
{ .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
{ "fixed_frame_rate_flag", "Set VUI fixed frame rate flag",

2
libavcodec/h265_metadata_bsf.c
View File

@ -439,7 +439,7 @@ static const AVOption h265_metadata_options[] = {
{ .i64 = -1 }, -1, 6, FLAGS },
{ "tick_rate",
"Set VPS and VUI tick rate (num_units_in_tick / time_scale)",
"Set VPS and VUI tick rate (time_scale / num_units_in_tick)",
OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
{ .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
{ "num_ticks_poc_diff_one",