gen2-rtsp-streaming appears to be broken on macOS 13.1 with M1

hello! trying the gen2-rtsp-streaming does this:

gen2-rtsp-streaming % python3 main.py
Available devices:
[0] 18443010B1A3BD0800 [X_LINK_UNBOOTED]
Setup finished, RTSP stream available under "rtsp://localhost:8554/preview"

all seems good; then when starting a stream in another terminal:

Traceback (most recent call last):
  File "(...)depthai-experiments/gen2-rtsp-streaming/main.py", line 35, in do_create_element
    return Gst.parse_launch(self.launch_string)
gi.repository.GLib.Error: gst_parse_error: no element "appsrc" (1)

note that in addition to the brew gstreamer things I needed a pip install gobject PyGObject, and that the M1 brew adjustment referenced in https://stackoverflow.com/q/64882584 are no longer needed.

FYI output in the ffplay terminal (confirms the server is not working):

~ % ffplay -fflags nobuffer -fflags discardcorrupt -flags low_delay -framedrop rtsp://localhost:8554/preview
ffplay version 5.1.2 Copyright (c) 2003-2022 the FFmpeg developers
  built with Apple clang version 14.0.0 (clang-1400.0.29.202)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1.2_1 --enable-shared --enable-pthreads --enable-version3 --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-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --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 --enable-neon
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
rtsp://localhost:8554/preview: Server returned 400 Bad Request
1   HIToolbox                           0x000000019ead45c8 _ZN15MenuBarInstance22EnsureAutoShowObserverEv + 120
2   HIToolbox                           0x000000019ead4188 _ZN15MenuBarInstance14EnableAutoShowEv + 60
3   HIToolbox                           0x000000019ea77310 SetMenuBarObscured + 372
4   HIToolbox                           0x000000019ea76ee8 _ZN13HIApplication15HandleActivatedEP14OpaqueEventRefhP15OpaqueWindowPtrh + 172
5   HIToolbox                           0x000000019ea70fcc _ZN13HIApplication13EventObserverEjP14OpaqueEventRefPv + 296
6   HIToolbox                           0x000000019ea37cd0 _NotifyEventLoopObservers + 176
7   HIToolbox                           0x000000019ea7096c AcquireEventFromQueue + 432
8   HIToolbox                           0x000000019ea5fc84 ReceiveNextEventCommon + 320
9   HIToolbox                           0x000000019ea5fb2c _BlockUntilNextEventMatchingListInModeWithFilter + 72
10  AppKit                              0x000000019860c424 _DPSNextEvent + 632
11  AppKit                              0x000000019860b5b4 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 728
12  libSDL2-2.0.0.dylib                 0x00000001012eb084 Cocoa_PumpEventsUntilDate + 172
13  libSDL2-2.0.0.dylib                 0x00000001012eb1dc Cocoa_PumpEvents + 56
14  libSDL2-2.0.0.dylib                 0x0000000101266b70 SDL_PumpEventsInternal + 64
15  ffplay                              0x00000001007c3a74 main + 1832
16  dyld                                0x0000000194f83e50 start + 2544

luxonis / depthai-experiments

gen2-rtsp-streaming appears to be broken on macOS 13.1 with M1 #444