: Use H.264 (x264) for maximum compatibility or H.265 (x265) if you want a smaller file size with high quality.
"Just finished converting the English subtitles for ! Used the convert022701 process for the best quality at the minimum possible file size. Everything is synced and ready to go." Option 3: Concise Log Entry
Check the original source to see if a "Full" version is available.
To get the smallest file size () without sacrificing visual clarity ( best ), use an H.265 (HEVC) encoder.