[FFmpeg-trac] #8499(undetermined:new): expressions issues

[FFmpeg]

#8499: expressions issues
-------------------------------------+-------------------------------------
             Reporter:  Atarikid     |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Ever sinds the latest daily builds using more complex expressions throws
 errors.

 See the below example - this works with FFmpeg 4.2.2 but not with the
 daily builds.


 atari ~ % /Users/atari/ffmpeg -i "/Users/atari/Desktop/in.mp4" -vf
 "scale='if(gt(iw,ih),140,trunc(oh*a/2)*2)':'if(gt(iw,ih),trunc(ow/a/2)*2,108)'"
 -frames:v 1 -y "/var/folders/thumbnail.png"
 ffmpeg version N-96486-g1ab302da6e-tessus Copyright (c) 2000-2020 the
 FFmpeg developers
   built with Apple clang version 11.0.0 (clang-1100.0.33.17)
   configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-
 version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
 --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d
 --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-
 libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-
 libopus --enable-librubberband --enable-libshine --enable-libsnappy
 --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
 --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-
 libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-
 libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-
 libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-
 flags=--static --disable-ffplay
   libavutil      56. 38.100 / 56. 38.100
   libavcodec     58. 66.101 / 58. 66.101
   libavformat    58. 35.104 / 58. 35.104
   libavdevice    58.  9.103 / 58.  9.103
   libavfilter     7. 71.100 /  7. 71.100
   libswscale      5.  6.100 /  5.  6.100
   libswresample   3.  6.100 /  3.  6.100
   libpostproc    55.  6.100 / 55.  6.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/atari/Desktop/in.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     creation_time   : 2020-01-25T08:40:48.000000Z
     encoder         : Lavf58.29.100
   Duration: 00:45:38.34, start: 0.000000, bitrate: 603 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 480x270 [SAR 1:1 DAR 16:9], 500 kb/s, 24.99 fps, 25 tbr, 12800 tbn, 50 tbc
 (default)
     Metadata:
       creation_time   : 2020-01-25T08:40:48.000000Z
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 96 kb/s (default)
     Metadata:
       creation_time   : 2020-01-25T08:40:48.000000Z
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> png (native))
 Press [q] to stop, [?] for help
 [Parsed_scale_0 @ 0x7fe22d000180] Circular expressions invalid for width
 'if(gt(iw,ih),140,trunc(oh*a/2)*2)' and height
 'if(gt(iw,ih),trunc(ow/a/2)*2,108)'.
 [AVFilterGraph @ 0x7fe22ac14580] Error initializing filter 'scale' with
 args
 'if(gt(iw,ih),140,trunc(oh*a/2)*2):if(gt(iw,ih),trunc(ow/a/2)*2,108):flags=bicubic'
 Error reinitializing filters!
 Failed to inject frame into filter network: Invalid argument
 Error while processing the decoded data for stream #0:0
 Conversion failed!

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8499>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker