By default yes — a 48 kHz audio track in MP4 becomes 48 kHz in AIFF. If you need 44.1 kHz (CD-quality) for compatibility with older players, the advanced options include a sample-rate dropdown.
Audio extraction is much faster than video re-encoding — typically 5-15% of the source duration. A 1-hour MP4 → AIFF finishes in 3-9 minutes on the standard pipeline.
AIFF (Formata Pelê Veguhastina Dengê) formatek pelê dengî ya nekompresandî ye ku bi gelemperî di hilberîna deng û muzîkê ya profesyonel de tê bikar anîn.