[FFmpeg-trac] #11001(avdevice:new): MacOS Sonoma "Class `NSKVONotifying_AVCaptureScreenInput' not linked into application"

[FFmpeg]

#11001: MacOS Sonoma "Class `NSKVONotifying_AVCaptureScreenInput' not linked into
application"
-------------------------------------+-------------------------------------
             Reporter:  Frank        |                     Type:  defect
  Plowman                            |
               Status:  new          |                 Priority:  normal
            Component:  avdevice     |                  Version:  git-
             Keywords:               |  master
  avfoundation macos                 |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Using MacOS Sonoma 14.4.1 (23E224) and ffmpeg
 2f8bf90054a5f7455f35b8705163f81c4413d779, attempting to record using the
 avfoundation input device results in the following errors:
 {{{
 2024-05-06 18:03:21.526 ffmpeg[13164:50828] WARNING: Add
 NSCameraUseContinuityCameraDeviceType to your Info.plist to use
 AVCaptureDeviceTypeContinuityCamera.
 }}}
 {{{
 objc[13164]: class `NSKVONotifying_AVCaptureScreenInput' not linked into
 application
 }}}
 {{{
 [AVFoundation indev @ 0x137f05660] Configuration of video device failed,
 falling back to default.
 }}}

 AVCaptureDeviceTypeContinuityCamera allows you to use your iPhone as a
 video capture device.  The application, Terminal.app in this case, does
 indeed not have NSCameraUseContinuityCameraDeviceType in its Info.plist,
 so this may be an upstream issue or could be ignored.  The second issue
 appears more concerning.

 The audio is also very choppy, even when set up with a realtime-suitable
 configuration but I am unsure as to whether this is related.

 How to reproduce:
 {{{
 % ./ffmpeg -pix_fmt bgr0 -f avfoundation -i "1:1" test.ts
 ffmpeg version N-115088-g2f8bf90054 Copyright (c) 2000-2024 the FFmpeg
 developers
   built with Apple clang version 15.0.0 (clang-1500.3.9.4)
   configuration:
   libavutil      59. 17.100 / 59. 17.100
   libavcodec     61.  5.103 / 61.  5.103
   libavformat    61.  3.103 / 61.  3.103
   libavdevice    61.  2.100 / 61.  2.100
   libavfilter    10.  2.101 / 10.  2.101
   libswscale      8.  2.100 /  8.  2.100
   libswresample   5.  2.100 /  5.  2.100
 2024-05-06 18:15:54.840 ffmpeg[31518:102093] WARNING: Add
 NSCameraUseContinuityCameraDeviceType to your Info.plist to use
 AVCaptureDeviceTypeContinuityCamera.
 objc[31518]: class `NSKVONotifying_AVCaptureScreenInput' not linked into
 application
 objc[31518]: class `NSKVONotifying_AVCaptureScreenInput' not linked into
 application
 objc[31518]: class `NSKVONotifying_AVCaptureScreenInput' not linked into
 application
 [AVFoundation indev @ 0x13c6059d0] Configuration of video device failed,
 falling back to default.
 [avfoundation @ 0x13c605760] Stream #0: not enough frames to estimate
 rate; consider increasing probesize
 Input #0, avfoundation, from '1:1':
   Duration: N/A, start: 837.977396, bitrate: 1536 kb/s
   Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 2940x1912, 1000k
 tbr, 1000k tbn
   Stream #0:1: Audio: pcm_f32le, 48000 Hz, mono, flt, 1536 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
   Stream #0:1 -> #0:1 (pcm_f32le (native) -> mp2 (native))
 Press [q] to stop, [?] for help
 Output #0, mpegts, to 'test.ts':
   Metadata:
     encoder         : Lavf61.3.100
   Stream #0:0: Video: mpeg2video (Main), yuv420p(progressive), 2940x1912,
 q=2-31, 200 kb/s, 240 fps, 90k tbn
       Metadata:
         encoder         : Lavc61.5.103 mpeg2video
       Side data:
         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
   Stream #0:1: Audio: mp2, 48000 Hz, mono, s16, 384 kb/s
       Metadata:
         encoder         : Lavc61.5.103 mp2
 [out#0/mpegts @ 0x600002db0300] video:1649KiB audio:73KiB subtitle:0KiB
 other streams:0KiB global headers:0KiB muxing overhead: 3.167513%
 frame=   55 fps= 30 q=31.0 Lsize=    1776KiB time=00:00:01.76
 bitrate=8236.5kbits/s speed=0.967x
 Exiting normally, received signal 2.
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11001>
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