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author | Haihao Xiang <haihao.xiang@intel.com> | 2023-02-07 11:59:07 +0800 |
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committer | Haihao Xiang <haihao.xiang@intel.com> | 2023-02-16 11:15:50 +0800 |
commit | 0f407cdea291ac39505dd20a81ed63f3ddf34ef1 (patch) | |
tree | d525678390f79a1efd3e70ae5978d6e60019db74 /doc | |
parent | 742dfa28150911a9cd7deee1fd935320cf707f6f (diff) | |
download | ffmpeg-0f407cdea291ac39505dd20a81ed63f3ddf34ef1.tar.gz |
avfilter: add QSV variants of the stack filters
Include hstack_qsv, vstack_qsv and xstack_qsv. They may accept input
streams with different sizes.
Examples:
$ ffmpeg -hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-filter_complex "[0:v][0:v]hstack_qsv" -f null -
$ ffmpeg \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-hwaccel qsv -hwaccel_output_format qsv -i input.mp4 \
-filter_complex "[0:v][1:v][2:v][3:v]xstack_qsv=inputs=4:fill=0x000000:layout=0_0_1920x1080|w0_0_1920x1080|0_h0_1920x1080|w0_h0_1920x1080" \
-f null -
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/filters.texi | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index a4e235d2af..d65f6ca69d 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -26802,6 +26802,94 @@ See @ref{xstack}. @c man end VAAPI VIDEO FILTERS +@chapter QSV Video Filters +@c man begin QSV VIDEO FILTERS + +Below is a description of the currently available QSV video filters. + +To enable compilation of these filters you need to configure FFmpeg with +@code{--enable-libmfx} or @code{--enable-libvpl}. + +To use QSV filters, you need to setup the QSV device correctly. For more information, please read @url{https://trac.ffmpeg.org/wiki/Hardware/QuickSync} + +@section hstack_qsv +Stack input videos horizontally. + +This is the QSV variant of the @ref{hstack} filter, each input stream may +have different height, this filter will scale down/up each input stream while +keeping the orignal aspect. + +It accepts the following options: + +@table @option +@item inputs +See @ref{hstack}. + +@item shortest +See @ref{hstack}. + +@item height +Set height of output. If set to 0, this filter will set height of output to +height of the first input stream. Default value is 0. +@end table + +@section vstack_qsv +Stack input videos vertically. + +This is the QSV variant of the @ref{vstack} filter, each input stream may +have different width, this filter will scale down/up each input stream while +keeping the orignal aspect. + +It accepts the following options: + +@table @option +@item inputs +See @ref{vstack}. + +@item shortest +See @ref{vstack}. + +@item width +Set width of output. If set to 0, this filter will set width of output to +width of the first input stream. Default value is 0. +@end table + +@section xstack_qsv +Stack video inputs into custom layout. + +This is the QSV variant of the @ref{xstack} filter. + +It accepts the following options: + +@table @option +@item inputs +See @ref{xstack}. + +@item shortest +See @ref{xstack}. + +@item layout +See @ref{xstack}. +Moreover, this permits the user to supply output size for each input stream. +@example +xstack_qsv=inputs=4:layout=0_0_1920x1080|0_h0_1920x1080|w0_0_1920x1080|w0_h0_1920x1080 +@end example + +@item grid +See @ref{xstack}. + +@item grid_tile_size +Set output size for each input stream when @option{grid} is set. If this option +is not set, this filter will set output size by default to the size of the +first input stream. For the syntax of this option, check the +@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}. + +@item fill +See @ref{xstack}. +@end table + +@c man end QSV VIDEO FILTERS + @chapter Video Sources @c man begin VIDEO SOURCES |