This doesn't look like a typical hevc file:
Code
2023-07-31 22:33:58.744 T:1118 info <general>: ffmpeg[0x417b128]: [matroska,webm] Unknown/unsupported AVCodecID V_MS/VFW/FOURCC.
2023-07-31 22:33:58.753 T:1118 debug <general>: ffmpeg[0x417b128]: [matroska,webm] Could not find codec parameters for stream 0 (Video: none (HEVC / 0x43564548), none, 1280x540): unknown codec
2023-07-31 22:33:58.753 T:1118 info <general>: ffmpeg[0x417b128]: Stream #0:0: Video: none (HEVC / 0x43564548), none, 1280x540, SAR 1:1 DAR 64:27, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
Note that it probes "Video: none (HEVC / 0x43564548), none"
When I play a hevc file I see:
Can you confirm if you can play a typical hevc file? e.g. this?
Can you post output of mediainfo for your file?