2021-04-24 19:28:58.930 T:1500315872 ERROR: ffmpeg[596D00E0]: [matroska,webm] Read error at pos. 78740022 (0x4b17a36)
2021-04-24 19:28:58.931 T:1431920864 INFO: CFileCache::Process - Source read didn't return any data! Hit eof(?)
Can you upload a sample of the file so that we know the file is not broken.
In your current logs I only see H.265 files being played which may be to “heavy” for the Pi. Best to check if H.264 also show the issue (you wrote so in your thread but could see it in the logs).