Sone385engsub Convert020002 Min Better -

Under Video, choose H.265 (NVENC if you have an NVIDIA GPU for faster conversion) or H.264 (widest support).

Set RF value: 20–22 for good quality/size balance. Lower = better quality, larger file.

Convert.

| Problem | Solution | |---------|----------| | Audio out of sync after cut | Add -async 1 -vsync 1 | | Subtitles missing | Ensure -map 0:s? is included | | Huge file size | Use -crf > 20 or set maxrate via -maxrate 2M -bufsize 4M | | Slow conversion | Use -preset ultrafast (but larger file) | | Cut not frame-accurate | Use -ss after -i with -copyts and re-encode at least one GOP |

Golden rule for “better”: If quality is paramount, accept larger file. If size is paramount, accept some quality loss.

For soft subs, after cutting, re-mux:

ffmpeg -i sone385.engsub.mkv -ss 00:02:00 -t 2 -c:v libx265 -crf 18 -preset slow -c:a libopus -b:a 96k -c:s copy sone385_better.mkv

ffmpeg -i sone385.engsub.mkv -ss 00:02:00 -to 00:02:02 -c copy -map 0 sone385_clip.mkv

Caveat: If 00:02:00 is not exactly a keyframe, FFmpeg will start at the previous keyframe, making your clip slightly longer. To force frame-accurate cut, use:

ffmpeg -i sone385.engsub.mkv -ss 00:02:00 -to 00:02:02 -c copy -avoid_negative_ts make_zero sone385_clip.mkv

But this may still show corrupted frames at beginning. sone385engsub convert020002 min better

For true frame-accurate lossless cut, use:

ffmpeg -i sone385.engsub.mkv -filter_complex "[0:v]trim=120:122,setpts=PTS-STARTPTS[v]" -map "[v]" -map 0:a? -map 0:s? -c:v libx264 -preset ultrafast -crf 0 sone385_clip.mkv

Better trade-off: Cut with keyframe accuracy + re-encode only the cut portion using high bitrate. Under Video , choose H

Instead of re-timing the whole file (which often distorts earlier perfect sync), the converter:

The result: Sync error reduced from 1.5 seconds to 0.03 seconds – well within the MIN Better threshold. | Problem | Solution | |---------|----------| | Audio