Unexpected Qt Multimedia warning message

Unexpected warning messages after upgrading our project to Qt 6.8.2 from Qt 6.6.3.

The target device is running a Yocto Scarthgap system on an Intel Atom board.

Using various GStreamer pipelines, although Qt Multimedia is set to use FFmpeg as backend. The current packages versions are:

• ffmpeg 6.1.1
• GStreamer 1.20.7

The system builds successfully, but some of the tests do fail. On further investigation we have observed the following unexpected warning messages
when playing a video:

'Cannot determine any usable texture format, using preferred format 4'

The video playback is subjectively unaffected.

The message is logged roughly each frame, and after browsing the Qt source code, seems related to the video pixel format. Here are the codec info related to our video file (output from ffprobe):

Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
creation_time : 2022-09-13T13:00:44.000000Z
Duration: 00:00:09.87, start: 0.000000, bitrate: 2240 kb/s
Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1080x1080 [SAR 1:1 DAR 1:1], 1903 kb/s, 60 fps, 60 tbr, 60k tbn (default)
Metadata:
creation_time : 2022-09-13T13:00:44.000000Z
handler_name : ?Mainconcept Video Media Handler
vendor_id : [0][0][0][0]
encoder : AVC Coding
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 316 kb/s (default)
Metadata:
creation_time : 2022-09-13T13:00:44.000000Z
handler_name : #Mainconcept MP4 Sound Media Handler
vendor_id : [0][0][0][0]