[FFmpeg-trac] #9295(avdevice:new): avfoundation macOS has wrong resolution 2880x1800 should be 2560x1600

[FFmpeg]

#9295: avfoundation macOS has wrong resolution 2880x1800 should be 2560x1600
-------------------------------------+-------------------------------------
             Reporter:  Harald       |                     Type:  defect
  Rudell                             |
               Status:  new          |                 Priority:  normal
            Component:  avdevice     |                  Version:
                                     |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Computer is MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports)
 — the M1 right next to it
 Display native resolution is 2560x1600

 BUG:
 avfoundation produces somewhat fuzzy video at resolution 2880x1800
 If output video is resized back to 2560x1600, it’s super-fuzzy
 other avfoundation device options seem ineffective

 EXPEXTED:
 Sharp image of Native resolution 2560x1600

 Here is the code line:
 https://github.com/FFmpeg/FFmpeg/blob/master/libavdevice/avfoundation.m#L404

 How to reproduce:
 {{{
 date && sw_vers && sysctl -n hw.model && ffmpeg \
   -t 1 \
   -pixel_format nv12 \
   -framerate 30 \
   -f avfoundation -i "Capture screen 1":none \
   -f null -
 Sat Jun 19 20:05:00 PDT 2021
 ProductName:    macOS
 ProductVersion: 11.4
 BuildVersion:   20F71
 MacBookPro16,2
 ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
   built with Apple clang version 12.0.0 (clang-1200.0.32.29)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_1 --enable-shared
 --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-
 cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl
 --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame
 --enable-libopus --enable-librav1e --enable-librubberband --enable-
 libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora
 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid
 --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r
 --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq
 --enable-libzimg --disable-libjack --disable-indev=jack --enable-
 videotoolbox
   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
   libavresample   4.  0.  0 /  4.  0.  0
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 [AVFoundation indev @ 0x7fbf01904ac0] Configuration of video device
 failed, falling back to default.
 [avfoundation @ 0x7fbf03808200] Stream #0: not enough frames to estimate
 rate; consider increasing probesize
 Input #0, avfoundation, from 'Capture screen 1:none':
   Duration: N/A, start: 505496.222500, bitrate: N/A
   Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12, 2880x1800, 1000k
 tbr, 1000k tbn, 1000k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf58.76.100
   Stream #0:0: Video: wrapped_avframe, nv12(progressive), 2880x1800,
 q=2-31, 200 kb/s, 1000k fps, 1000k tbn
     Metadata:
       encoder         : Lavc58.134.100 wrapped_avframe
 frame=   30 fps= 30 q=-0.0 Lsize=N/A time=00:00:00.96 bitrate=N/A
 speed=0.959x
 video:16kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9295>
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