| Error | Likely Cause | Solution | |-------|--------------|----------| | cp: cannot stat 'video.txt': No such file | The text file has a different name (e.g., video_en.txt ) | Use ls to list exact names, then adjust the cp command. | | ffmpeg: Unable to find a suitable output format for 'txt' | FFmpeg expects a subtitle codec, not raw txt | Convert .txt to .srt first (add line numbers and timestamps), then re-run. | | Operation not permitted (macOS) | Privacy protections on the source box | Go to System Settings > Privacy > Full Disk Access and grant terminal access. | | Video plays but no subtitles appear | The txt metadata box is present but not flagged as default | Use -disposition:s:0 default in your ffmpeg command. | | Checksum mismatch after copy | File corruption during transfer | Re-copy using rsync -c (checksum comparison) instead of basic cp. | For professionals who perform this operation daily, automation is key. Below is a Bash script that copies all video-txt pairs from a source box to a destination, verifies them, and logs the outcome.
echo "Operation completed at $(date)" >> $LOG_FILE Cp Box Video txt
if [[ -f "$video_file" && -f "$txt_file" ]]; then cp "$video_file" "$DEST_BOX/" cp "$txt_file" "$DEST_BOX/" echo "Copied: $base_name.mp4 and .txt" >> $LOG_FILE # Verification orig_vid_md5=$(md5sum "$video_file" | awk 'print $1') new_vid_md5=$(md5sum "$DEST_BOX/$base_name.mp4" | awk 'print $1') if [[ "$orig_vid_md5" == "$new_vid_md5" ]]; then echo "VERIFIED: $base_name.mp4" >> $LOG_FILE else echo "ERROR: $base_name.mp4 checksum mismatch" >> $LOG_FILE fi else echo "WARNING: Missing txt for $base_name.mp4" >> $LOG_FILE fi done | Error | Likely Cause | Solution |
for video_file in "$SOURCE_BOX"/*.mp4; do base_name=$(basename "$video_file" .mp4) txt_file="$SOURCE_BOX/$base_name.txt" | | Video plays but no subtitles appear