[FFmpeg-trac] #9423(undetermined:new): avfoundation input device fails to record macOS screen upon display resolution change

[FFmpeg]

#9423: avfoundation input device fails to record macOS screen upon display
resolution change
-------------------------------------+-------------------------------------
             Reporter:  Mykola       |                     Type:  defect
  Mokhnach                           |
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:

 - Set macOS screen resolution to AxB
 - Start screen recording with the below command
 - Change macOS screen resolution to CxD (must be different from AxB) while
 recording
 - Stop the recording and watch the resulting video

 Actual result:
 The video loops the recent frame before the display resolution change. No
 errors are shown in the terminal. On Windows (gdigrab) the recorder
 properly retrieves the content of the display with the new resolution set.

 Expected result:
 The video must contain the scaled content of the display with the new
 resolution.


 {{{
 %ffmpeg -y -f avfoundation -framerate 4 -r 4 -i 0 -filter_complex
 "[0:v]split=2[ts][capture];[ts]setpts=time(0)*FR[ts];[capture]scale=1280:960:force_original_aspect_ratio=decrease:eval=frame,pad=1280:960:-1:-1:color=black[capture]"
 -map "[ts]" -vsync 0 -flush_packets 1 -f mkvtimestamp_v2 output_ts.txt
 -map "[capture]" -c:v libx264 -tune zerolatency -preset veryfast -fflags
 nobuffer -pix_fmt yuv420p -movflags +faststart -f mp4 output.mp4

 fmpeg version 4.4-tessus  https://evermeet.cx/ffmpeg/  Copyright (c)
 2000-2021 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-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. 70.100 / 56. 70.100
   libavcodec     58.134.100 / 58.134.100
   libavformat    58. 76.100 / 58. 76.100
   libavdevice    58. 13.100 / 58. 13.100
   libavfilter     7.110.100 /  7.110.100
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9423>
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