diff options
| author | Andrey Utkin <andrey.utkin@pb.com> | 2016-12-14 14:37:47 +0000 |
|---|---|---|
| committer | Lou Logan <lou@lrcd.com> | 2016-12-14 09:38:11 -0900 |
| commit | c4afd4abce58bc3c25fd2964ae9d2a38dec5dc99 (patch) | |
| tree | dc7d9dcd6784ea189d0e704f4941e291637228bd /doc | |
| parent | 2d7aadf3d95c96848433955b537ced415fb6ae20 (diff) | |
doc/filters: drawtext: add example of printing texts on same baseline
Height of canvas produced by drawtext varies depending on symbols in
text, so add example for printing separate texts aligned horizontally.
Wording suggested by Lou Logan <lou@lrcd.com>
Signed-off-by: Andrey Utkin <andrey.utkin@pb.com>
Signed-off-by: Lou Logan <lou@lrcd.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 3ae3c46d26..06ca2e03b7 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -7135,6 +7135,14 @@ FOD=5 # fade out duration ffplay -f lavfi "color,drawtext=text=TEST:fontsize=50:fontfile=FreeSerif.ttf:fontcolor_expr=ff0000%@{eif\\\\: clip(255*(1*between(t\\, $DS + $FID\\, $DE - $FOD) + ((t - $DS)/$FID)*between(t\\, $DS\\, $DS + $FID) + (-(t - $DE)/$FOD)*between(t\\, $DE - $FOD\\, $DE) )\\, 0\\, 255) \\\\: x\\\\: 2 @}" @end example +@item +Horizontally align multiple separate texts. Note that @option{max_glyph_a} +and the @option{fontsize} value are included in the @option{y} offset. +@example +drawtext=fontfile=FreeSans.ttf:text=DOG:fontsize=24:x=10:y=20+24-max_glyph_a, +drawtext=fontfile=FreeSans.ttf:text=cow:fontsize=24:x=80:y=20+24-max_glyph_a +@end example + @end itemize For more information about libfreetype, check: |