[FFmpeg-trac] #2874(avfilter:new): AVFilter: drawtext: Draw text with information of current image file

[FFmpeg]

#2874: AVFilter: drawtext: Draw text with information of current image file
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             Reporter:  jlubeck   |                     Type:  enhancement
               Status:  new       |                 Priority:  normal
            Component:  avfilter  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 I'm creating a timelapse which I would love to include the "timecode" of
 when each picture was taken.

 Currently, the timecode option creates one for everyframe of the video.

 Also, using text='\%T' seems to work only for real-time streams.

 I have files named:
 2013-08-16_001032.jpg
 2013-08-16_002045.jpg
 2013-08-16_003024.jpg
 2013-08-16_004043.jpg
 and so on... That is year-month-date_hourminutesecond.jpg

 I'm currently using the following:

 % ffmpeg -y -i "2013-08-14_%*.jpg" -vf
 "drawtext=fontfile=/Library/Fonts/AppleGothic.ttf:
 text=%{n}:expansion=normal: r=25: x=(w-tw)/2: y=h-(2*lh): fontcolor=white:
 box=1: boxcolor=0x00000000 at 1" output.m4v

 And it is printing a new number on each frame. It would be great if
 instead of %{n} we could use something to grab the filename, or even
 better, meta data from the jpg to be able to format the timestamp. But
 just with the file name would be great.

 ffmpeg version 1.2.1

 Thanks!

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2874>
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