Did the handbrake image change recently? HE-AAC disappeared as an audio encoding option and x265 encoding now fail/error our when a glitch in the source stream is encountered with the following in the log
encoded 4416 frames in 49.98s (88.36 fps), 423.07 kb/s, Avg QP:28.96
[21:06:19] avformatMux: track 1, av_interleaved_write_frame failed with error 'Function not implemented'
[21:06:19] Last error repeated 1 times
[21:06:19] avformatMux: track 0, av_interleaved_write_frame failed with error 'Function not implemented'
[21:06:19] avformatMux: track 0, av_interleaved_write_frame failed with error 'Function not implemented'
[21:06:19] Last error repeated 1 times
[21:06:19] avformatMux: track 1, av_interleaved_write_frame failed with error 'Function not implemented'
[21:06:19] avformatMux: track 1, av_interleaved_write_frame failed with error 'Function not implemented'
[21:06:19] Last error repeated 8 times