[FFmpeg-trac] #9427(avfilter:new): Wrong vertical alignment in drawtext
FFmpeg
trac at avcodec.org
Sat Sep 18 20:08:57 EEST 2021
#9427: Wrong vertical alignment in drawtext
-------------------------------------+-------------------------------------
Reporter: Michael | Type: defect
Koch |
Status: new | Priority: normal
Component: avfilter | Version: git-
| master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
It's impossible to print several strings with drawtext in the same line.
The vertical alignment depends on which characters are in the string. Can
be reproduced as follows, case 1 without using "text_h":
ffmpeg -f lavfi -i color=yellow -lavfi
drawtext=text='a_':x=20:y=50,drawtext=text='_gG':x=40:y=50,drawtext=text='``':x=60:y=50
-frames 1 -y out1.png
Case 2 with "text_h" subtracted:
ffmpeg -f lavfi -i color=yellow -lavfi
drawtext=text='a_':x=20:y=50-text_h,drawtext=text='_gG':x=40:y=50-text_h,drawtext=text='``':x=60:y=50-text_h
-frames 1 -y out2.png
In both cases the vertical alignment of the strings is wrong.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9427>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list