Nsps445engsub Convert013008 Min

mkvmerge --sync 0:-01:30:08 --output shifted_subs.srt full_subs.srt No – mkvmerge works on mkv files. So convert the trimmed video and adjust subs together:

ffmpeg -i nsps445engsub -ss 01:30:08 -t 30:00 -map 0:s:0 -c srt shifted_subs.srt Wait: this command does shift subtitle timestamps automatically. Instead, better to extract full subtitles, then use a dedicated tool: 4.2.1 Extract original subs ffmpeg -i nsps445engsub -map 0:s:0 full_subs.srt 4.2.2 Shift subtitles by -01:30:08 Use ffmpeg ’s setpts and adelay concepts do not apply to subs. Instead, use subtitleedit (CLI) or a Python script, or ffmpeg with -itsoffset (tricky). Simplest method: nsps445engsub convert013008 min

If you own this file legally and need precise assistance, provide the container format (e.g., nsps445engsub.mkv ) and the exact goal — “convert to MP4,” “extract subtitles as TXT,” or “trim to last 30 minutes” — and the command can be personalized further. mkvmerge --sync 0:-01:30:08 --output shifted_subs

ffmpeg -i nsps445engsub -itc 1 -f srt corrected.srt (Use -itc for input timecode if it’s a raw subtitle stream.) This is the most technical part. Let’s assume the user wants to extract a 30-minute segment starting at 01:30:08 from the full video, and also convert the subtitles to remain in sync for that segment. 4.1 Trim the video without re-encoding (fast) Using FFmpeg: Instead, use subtitleedit (CLI) or a Python script,

The last line works because -itsoffset before -i shifts the subtitle timings.