Precise Audio-Video Sync Editing

I have an MP4 video and a separate MP3 track that must line up perfectly—no effects, titles, or fancy transitions, just frame-accurate synchronization so lips and ambient cues feel natural. You may work in Premiere Pro, DaVinci Resolve, Final Cut, or any NLE you prefer, as long as the final render keeps the original resolution and codec.

Here’s what I’ll hand over:
• Raw MP4 clip (camera source)
• Separate MP3 master audio

What I expect back:
• A single, fully synced MP4 ready for review
• The editable project file so I can make minor tweaks later if needed

Please keep the color, resolution, and bitrate exactly as supplied; the focus is timing. If you spot any pops or gaps in the MP3, flag them, but do not apply processing unless we discuss it.

Turnaround within 48 hours would be ideal.