You might have noticed your analyzed tracks have little numbered grids on the waveform. These are Beatgrids. They are a key component in Serato DJ Pro and features like SYNC require your Beatgrids to be on point to work correctly.
If you aren't using Smart Sync or are using Simple Sync and haven't checked the Snap to Beatgrid option in the Setup screen, you will not see them. These lines indicate where the the beats lie.
When pressing the Sync button in the software or on your hardware and syncing with another track, these lines will snap together to sync precisely.
If your Beatgrids aren't correct, your mixes will be out. In this article i'll explain how to set them properly and easily.
When adding new files to Serato DJ Pro, there is an option to Set Beat Grid / BPM in the Analysis Settings in the Offline Player (without Serato DJ primary hardware connected). When you analyze your files with this option enabled, it will set Beatgrids for those tracks.
Although this is a handy and quick way to get accurate Beatgrids on all your tracks (new and old), it's not always perfect and adjusting Beatgrids manually can still be necessary.
You can edit Beatgrids in the Offline Player, or while you have your hardware connected. You will have to click on the Edit Grid button to activate the editing panel or by pressing ALT + Spacebar (press twice to adjust for the right hand Virtual Deck's track).
You will now be able to edit Beatgrids using this panel:
Setting the downbeat
Often if a song doesn't start on the very first beat or "downbeat", the software will start the Beatgrid at the first major sound (or transient). This may be a sweep, a snare, a clap etc. It can confuse the software in thinking that the sound is the first beat. In my experience, I find it best to just clear the grid in this situation by entering the Edit Grid mode and hitting delete on your keyboard.
You can then set the Beatgrid on the first beat of the track (like you would do when setting a Cue Point), by clicking Set under the Markers section of the Edit Grid mode panel.
(Hot keys are Alt + X or Alt + Mouse Click on the first Beat).
For songs written/produced to a quantized grid (like most electronic music), the Beatgrid will be correct throughout.
Some music, especially with live drums or no quantization, tempo changes within the music, no tempo (Sun Ra), will give the software a hard time though and some manual editing might be needed. This takes a bit more attention.
Using the set button, you can set markers to any new major transient. This allows the Beatgrid to follow the track’s change in tempo.
Tracks with Beat Warp Markers are able to be be perfectly Synced to tracks with no tempo changes without the beats dropping out of time. Or if you choose to not have Sync engaged it will tell the FX if applied, what beats to follow.
You can see in these pics that the tempo changes from 128 to 120 after the set (Red) beat grid marker has past the playhead,
As the track slows down in tempo the beat grid will have to be set at every change. Set the beat grid markers as often as needed until the track stabilizes or ends (whichever comes first).