I have a third of a frame with no sound at the end of a clip I cut in two and exported

[Christian21841057bu7p]

I have a piece of 37 seconds. Video and one music track.

They asked me to cut the video in two, first 30 seconds and last 7 seconds. The videos will continue to be one piece but divided in two pieces for technical reasons.

The problem is that when I cut them, export both and bring them back to premiere to check them, theres a tiny bump (only in the music) in the cut. Its not even a frame, like a thrid of a frame where theres no audio at all. I attach a picture to express myself better.

This is completely ruining my workflow because the two videos should work as one with smooth video and music. Unfortunately this is not working.

Please, I have tried everything already! I appreaciate your help!

My system:

Adobe Premiere 22.05.0

Windows 10 Pro

Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz 2.59 GHz

32,0 GB RAM

64-Bit-Betriebssystem, x64-basierter Prozessor

[Peru Bob]

If the source audio is mp3, convert to wav before importing into the project.

[Christian21841057bu7p]

I have tried that already. I exported just the audio track as a wav and import it back again. Then cut the clip in two and exported but same result.

[Peru Bob]

What effect is applied to the audio clip on the right side?

Is it OK if you remove that effect?

[Christian21841057bu7p]

sorry theres no effect applied. That pic is just to illustrate that empty third of a frame. I actually tried exporting the music track as a wav and then importing back again so there is no effects or anything applied anymore.

[Christian21841057bu7p]

UPDATE: I tried now exporting a .MOV Prores422 and it works well (no empty half frame on the audio waveform). So its def sth about the h264 export that its not working well. 

The thing is I need to export in H264 😕