Not from the video tools themselves: Veo, Kling and Seedance give you one mixed audio track per clip, not separate layers. You can split that track with a stem-separation tool and accept some bleed, or rebuild the sound design in layers. Effct does the second: new ambience and effects across your whole cut, exported as WAV stems or an AAF.

What audio do Veo, Kling and Seedance give you?

Each tool makes the sound in the same pass as the picture and hands it back inside the video file. Here's what each one documents as of October 2026:

Veo 3.1 (Google): the Gemini API docs list the output as video with audio, and audio is always on. You shape the sound through your prompt. The docs show no separate audio file or per-layer output.
Kling VIDEO 3.0: you choose Native Audio or No Native Audio when you generate, according to Kling's 3.0 guide. Native audio costs more: 12 credits a second at 1080p, against 8 without it. The guide describes no separate audio or layer export.
Seedance 2.0 and 2.5 (ByteDance): on BytePlus ModelArk, audio is on by default, and the model makes voice, sound effects and background music together. The API reference notes that all generated audio is mono. Seedance 2.5 can also return a MOV with uncompressed PCM audio, which holds up better in an edit. It's still one track.

So whichever tool you use, the voices, the footsteps, the room and any music arrive mixed together. You can turn the whole clip up or down. You can't turn down just the wind.

Your clips have sound. Your film doesn't, yet.

Can a stem separator split a clip's audio?

Partly. Stem-separation tools are trained to pull a mixed track apart into parts like voice, music and everything else. Premiere now has one built in: Enhance Audio, in public beta, gives separate control over dialogue, music, ambience and sound effects within a single clip (Adobe). Voices usually come out cleanest. Effects, ambience and music are harder to untangle, so expect bleed (a bit of one layer left in another) and a smeared, watery edge on whatever got pulled out.

That's fine for rescuing one line of generated dialogue. It's a weak base for a mix, for two reasons:

Every clip has to be separated on its own, and the quality changes from clip to clip.
It doesn't fix the bigger problem. Each clip invented its own room, so separating twelve clips gives you twelve different ambiences in twelve files. The jump at every cut is still there. Same problem, more files.

How do I rebuild the sound design in layers?

This is how a sound editor would treat a film stitched from generated clips: keep only what you need from the clips, and build the rest across the whole cut.

Finish the edit first. Sound follows picture, so lock the cut before you spend time on it.
Decide what to keep from the clips. Usually that's a line of dialogue or a sound you can't replace. Lower or mute the rest. If you know you'll replace the sound, Kling and Seedance can generate silent clips.
Lay one ambience bed per place. Run it under every shot in the same location and change it only when the scene moves somewhere new. This is what makes a run of clips sound like one film.
Add actions, or foley. Footsteps, doors, cloth, cars: anything on screen that should make a sound, placed on the frame where it happens.
Add design sounds. Whooshes, impacts and risers on cuts, reveals and title cards. Use fewer than you think.
Keep each layer on its own tracks. Ambience, actions and design stay apart, and those groups become your stems.

If you'd rather start from a full timeline than an empty one, Effct places the layers for you. Upload the finished cut and it analyzes the video frame by frame, then places ambience, actions and design sounds from its library of team-recorded and CC0 sounds, in sync, and mixes them. Every sound lands on the timeline as its own clip, so you can move it, trim it, Regenerate it for new options or delete it before you export (how to edit the sounds Effct places). Paid plans can also choose to include the video's existing audio when you start a project, if there's something in the clips you want to keep.

What's in an Effct stem?

On Creator ($29 a month) and up, Effct exports WAV stems, one per sound category: ambience, actions and design. Each one is a full-length 48 kHz, 24-bit stereo WAV that starts at the first frame of the video, so the files line up when you drop them at the head of your timeline. They carry the levels you set in the editor, and they arrive together in one ZIP. If you kept your video's existing audio in the project, it comes along as extra files.

Stems or AAF: which do I need?

Stems if you want to balance three layers against your own dialogue and music, or hand them to someone mixing in another app. A few files, easy to manage.
AAF (Pro, $49 a month) if you want to keep editing individual sounds after you leave Effct. It carries every sound as its own clip with the audio embedded, so you can still nudge a single footstep in your editor.
QuickTime (every paid plan) if you only need the finished video with the mix.

See plans.

Do stems work in Premiere and Resolve?

Yes. The stems are standard WAV files, so they import into Premiere Pro, DaVinci Resolve, Final Cut Pro or any DAW. Put each one on its own track at the start of the timeline and they'll sit in sync with the picture. The AAF is made for Premiere Pro and other editors that import AAF.

If you cut in Premiere, the Effct panel (Premiere Pro 25.6 or later, paid plans) works from a sequence that plays your cut as one video clip, so export a stitched cut as a single file first. Then click Load Sequence, then Add Sound Design, and the clips land on your timeline, with the files in an "Effct Audio" bin.

What Effct does and doesn't do

Effct places and mixes new sound design for your cut, picked from its library of real recordings. It doesn't make music.

Try it free on your own video: Effct sound-designs the first 30 seconds of one video, previewed in the editor. No credit card.

Last updated October 2026.

Can I get stems from Veo, Kling or Seedance clips?