[FFmpeg-trac] #4008(avfilter:new): "main_w" value unrecognized with the new "enable" option in Drawtext

[FFmpeg]

#4008: "main_w" value unrecognized with the new "enable" option in Drawtext
-------------------------------------+------------------------------------
             Reporter:  beloko       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avfilter
              Version:  unspecified  |               Resolution:
             Keywords:  drawtext     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by beloko):

 Hello Cehoyos,

 To build my binary I get the FFMPEG source code from this URL :
 ​https://github.com/FFmpeg/FFmpeg.git

 Should I use another repositery to get a fresh FFmpeg source code ?

 Here is my complete command with the full failling command :

 {{{
 C:\Users\Beloko\Desktop\FFMPEG>ffmpeg.exe -i
 "C:\Users\BelokoZ\Desktop\bunny.avi" -threads 0 -vcodec libx264 -s 1
 920x1080 -b:v 4096k -maxrate 4096k -bufsize 4096k -r 25 -filter:v
 "drawtext=font
 file='/Users/Beloko/Desktop/FFMPEG/arial.ttf':text
 ='HELLO
 TEXT':fontsize=47:fontcolor=yellow:x=(main_w/2-text_w/2):y=(main_h/2-tex
 t_h/2):enable=gte(main_w\,700)*lte(main_w\,1200)*lt(mod(t\,8)\,6)"
 -vprofile bas
 eline -f mpegts big_bunny.ts
 ffmpeg version N-66568-g81cee70 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Sep 04 2014 15:37:25 with gcc 4.7.2 (GCC)
   configuration: --arch=x86_64 --target-os=mingw32 --cross-
 prefix=/home/beloko/s
 andbox/mingw-w64-x86_64/bin/x86_64-w64-mingw32- --pkg-config=pkg-config
 --enable
 -gpl --enable-libx264 --enable-avisynth --enable-libxvid --enable-
 libmp3lame --e
 nable-version3 --enable-zlib --enable-librtmp --enable-libvorbis --enable-
 libthe
 ora --enable-libspeex --enable-libopenjpeg --enable-gnutls --enable-libgsm
 --ena
 ble-libfreetype --enable-libopus --disable-w32threads --enable-frei0r
 --enable-f
 ilter=frei0r --enable-libvo-aacenc --enable-bzlib --enable-libxavs
 --extra-cflag
 s=-DPTW32_STATIC_LIB --enable-libopencore-amrnb --enable-libopencore-amrwb
 --ena
 ble-libvo-amrwbenc --enable-libschroedinger --enable-libvpx --enable-
 libilbc --p
 refix=/home/beloko/sandbox/mingw-w64-x86_64/x86_64-w64-mingw32 --enable-
 static -
 -disable-shared --enable-libsoxr --enable-fontconfig --enable-libass
 --enable-li
 butvideo --enable-libbluray --enable-iconv --enable-libtwolame --extra-
 cflags=-D
 LIBTWOLAME_STATIC --enable-libzvbi --enable-libcaca --enable-libmodplug
 --extra-
 libs=-lstdc++ --extra-libs=-lpng --enable-libx265 --extra-cflags= --extra-
 cflags
 = --enable-nonfree --enable-libfdk-aac --disable-libfaac --disable-
 decoder=aac -
 -enable-runtime-cpudetect
   libavutil      54.  7.101 / 54.  7.101
   libavcodec     56.  1.102 / 56.  1.102
   libavformat    56.  7.102 / 56.  7.102
   libavdevice    56.  1.100 / 56.  1.100
   libavfilter     5.  1.102 /  5.  1.102
   libswscale      3.  1.100 /  3.  1.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  1.100 / 53.  1.100
 Input #0, avi, from 'C:\Users\Beloko\Desktop\bunny.avi':
   Metadata:
     encoder         : AVI-Mux GUI 1.17.7, Aug  8 2006  20:59:17
     JUNK            :
   Duration: 00:09:56.46, start: 0.000000, bitrate: 12455 kb/s
     Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46),
 yuv420p, 192
 0x1080 [SAR 1:1 DAR 16:9], 12001 kb/s, 24 fps, 24 tbr, 24 tbn, 24 tbc
     Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side),
 fltp, 44
 8 kb/s
 [drawtext @ 00000000003b6c00] [Eval @ 000000000022ac90] Unknown function
 in 'mai
 n_w,1200)*lt(mod(t,8),6)'
 [drawtext @ 00000000003b6c00] Error when evaluating the expression
 'gte(main_w,7
 00)*lte(main_w,1200)*lt(mod(t,8),6)' for enable
 [AVFilterGraph @ 000000000031af20] Error initializing filter 'drawtext'
 with arg
 s 'fontfile=/Users/Beloko/FFMPEG/arial.ttf
 :text=HELLO
 TEXT:fontsize=47:fontcolor=yellow:x=(main_w/2-text_w/2):y=(main_h/2-
 text_h/2):enable=gte(main_w,700)*lte(main_w,1200)*lt(mod(t,8),6)'
 Error opening filters!
 }}}

 In my FFMPEG command, you can replace "main_w" with another value like 800
 for the "enable" option and you'll see my FFMPEG command works perfectly.
 Problem is "enable" option doesn't support all "draw" option values like
 "main_w" or "main_h".

 :enable=gte('''main_w'''\,700)*lte('''main_w'''\,1200)*lt(mod(t\,8)\,6)
 becomes
 :enable=gte('''800'''\,700)*lte('''800'''\,1200)*lt(mod(t\,8)\,6)

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4008#comment:2>
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