If anyone can help that would be great
Here is my latest Handbrake log before it crashed
No accelerated IMDCT transform found
[12:38:41] reader: done. 1 scr changes
[12:38:41] work: average encoding speed for job is 153.077438 fps
[12:38:41] sync: got 43020 frames, 43045 expected
[12:38:41] h264-decoder done: 43020 frames, 0 decoder errors, 0 drops
[12:38:41] render: lost time: 0 (0 frames)
[12:38:41] render: gained time: 0 (0 frames) (0 not accounted for)
x264 [info]: frame I:366 Avg QP:17.40 size: 52897 PSNR Mean Y:46.35 U:52.73 V:54.00 Avg:47.69 Global:47.47
x264 [info]: frame P:17025 Avg QP:20.07 size: 12154 PSNR Mean Y:43.83 U:49.39 V:50.43 Avg:45.07 Global:44.93
x264 [info]: frame B:25629 Avg QP:23.59 size: 2652 PSNR Mean Y:43.18 U:49.02 V:50.17 Avg:44.45 Global:44.28
x264 [info]: consecutive B-frames: 4.1% 22.9% 72.9%
x264 [info]: mb I I16…4: 12.4% 0.0% 87.6%
x264 [info]: mb P I16…4: 2.3% 0.0% 6.1% P16…4: 54.1% 18.1% 8.4% 0.0% 0.0% skip:11.0%
x264 [info]: mb B I16…4: 1.9% 0.0% 0.6% B16…8: 31.9% 7.0% 0.5% direct: 8.6% skip:49.6% L0:28.1% L1:60.4% BI:11.5%
x264 [info]: coded y,uvDC,uvAC intra: 64.2% 77.3% 36.5% inter: 16.3% 25.8% 0.9%
x264 [info]: i16 v,h,dc,p: 37% 18% 20% 25%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 14% 16% 5% 8% 8% 7% 6% 5%
x264 [info]: i8c dc,h,v,p: 51% 17% 25% 8%
x264 [info]: Weighted P-Frames: Y:0.9% UV:0.3%
x264 [info]: ref P L0: 65.4% 12.4% 22.1% 0.1%
x264 [info]: ref B L0: 77.4% 22.6%
x264 [info]: ref B L1: 92.0% 8.0%
x264 [info]: SSIM Mean Y:0.9812836 (17.278db)
x264 [info]: PSNR Mean Y:43.464 U:49.200 V:50.306 Avg:44.726 Global:44.547 kb/s:1367.97
[12:38:41] muxmp4: optimizing file
[12:38:41] mux: track 0, 43020 frames, 294236292 bytes, 1367.87 kbps, fifo 8
[12:38:41] mux: track 1, 80662 frames, 27525707 bytes, 127.96 kbps, fifo 512
[12:38:41] libhb: work result = 0
[12:38:42] hb_scan: path=/home/robc/Plex/TV Shows/Only Fools and Horses/Series 5/5x08 Frogs Legacy [Xmas 1987].MKV, title_index=3
libbluray/bdnav/index_parse.c:157: indx_parse(): error opening /home/robc/Plex/TV Shows/Only Fools and Horses/Series 5/5x08 Frogs Legacy [Xmas 1987].MKV/BDMV/index.bdmv
libbluray/bluray.c:960: nav_get_title_list(/home/robc/Plex/TV Shows/Only Fools and Horses/Series 5/5x08 Frogs Legacy [Xmas 1987].MKV) failed (0x7ffae811fe30)
[12:38:42] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 4.1.3
libdvdread: Using libdvdcss version 1.2.12 for DVD access
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can’t open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[12:38:42] dvd: not a dvd - trying as a stream/file instead
Input #0, matroska,webm, from ‘/home/robc/Plex/TV Shows/Only Fools and Horses/Series 5/5x08 Frogs Legacy [Xmas 1987].MKV’:
Duration: 00:59:52.48, start: 0.000000, bitrate: 256 kb/s
Stream #0.0(eng): Video: h264, yuv420p, 700x568 [PAR 12:11 DAR 1050:781], PAR 191:175 DAR 191:142, 25 fps, 25 tbr, 1k tbn, 50 tbc
Stream #0.1: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s
[12:38:42] scan: decoding previews for title 1
[12:38:42] scan: audio 0x1: AC-3, rate=48000Hz, bitrate=256000 Unknown (AC3) (2.0 ch)
[12:38:42] scan: 10 previews, 700x568, 25.000 fps, autocrop = 0/0/2/0, aspect 4:3, PAR 12:11
[12:38:42] scan: title (0) job->width:704, job->height:528
[12:38:42] libhb: scan thread found 1 valid title(s)
[12:38:44] gtkgui: Custom Preset: RC Plex Test
[12:38:44] 1 job(s) to process
[12:38:44] starting job
[12:38:44] sync: expecting 89837 video frames
[12:38:44] job configuration:
[12:38:44] * source
[12:38:44] + /home/robc/Plex/TV Shows/Only Fools and Horses/Series 5/5x08 Frogs Legacy [Xmas 1987].MKV
[12:38:44] + title 1, chapter(s) 1 to 1
[12:38:44] + container: matroska,webm
[12:38:44] + data rate: 256 kbps
[12:38:44] * destination
[12:38:44] + /root/Videos/5x08 Frogs Legacy [Xmas 1987].mp4
[12:38:44] + container: MPEG-4 (.mp4 and .m4v)
[12:38:44] + optimized for progressive web downloads
[12:38:44] * video track
[12:38:44] + decoder: h264
[12:38:44] + frame rate: same as source (around 25.000 fps)
[12:38:44] + strict anamorphic
[12:38:44] + storage dimensions: 700 * 568 -> 698 * 568, crop 0/0/2/0, mod 2
[12:38:44] + pixel aspect ratio: 12 / 11
[12:38:44] + display dimensions: 761 * 568
[12:38:44] + encoder: x264
[12:38:44] + options: ref=2:bframes=2:subme=6:mixed-refs=0:weightb=0:8x8dct=0:trellis=0
[12:38:44] + quality: 20.00 (RF)
[12:38:44] * audio track 0
[12:38:44] + decoder: Unknown (AC3) (2.0 ch) (track 1, id 1)
[12:38:44] + bitrate: 256 kbps, samplerate: 48000 Hz
[12:38:44] + mixdown: Stereo
[12:38:44] + encoder: faac
[12:38:44] + bitrate: 128 kbps, samplerate: 48000 Hz
[12:38:44] encx264: encoding with stored aspect 12/11
[12:38:44] encx264: Encoding at constant RF 20.000000
x264 [info]: using SAR=12/11
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
x264 [info]: profile Main, level 3.0
No accelerated IMDCT transform found
[12:38:44] reader: first SCR 0 id 0 DTS 0