Build the scene around a voice
Generate sound with a 5–15 second scene, or use audio references to guide it. Keep the line clear and review the voice, words and mouth together.
Keep in mind
Audio is generated with the clip. 4K describes output size, not a guarantee of better motion.
Picture, sound and final frames
Explore text, image and reference workflows, including first-and-last-frame control and 4K output options.
Keep in mind
Duration and resolution choices depend on the mode. Check the exact combination before quoting a scene.
Room for a longer scene
Build a scene up to 30 seconds, starting with text, an image or a mix of visual and audio references.
Keep in mind
Output goes up to 1080p. References guide the result; they do not guarantee an identical face or object.
Bring sound into the scene
Create from text, an image or references with audio generated alongside the video, up to 1080p.
Keep in mind
Generated audio still needs listening checks. For dialogue, review the exact words and mouth timing.
Build around an audio track
Use text or an image, or choose audio-to-video with an owned audio file to guide a 1080p scene.
Keep in mind
Audio-to-video requires an audio input. Text and image modes have a different set of available settings.
How we choose
Start with H3 for a short scene with generated dialogue, or Veo 3.1 when frame control matters. Seedance 2.5 gives longer exchanges more room; HappyHorse 1.1 offers another sound-led option. Choose LTX 2.5 Pro when you already have the audio. Listen and check mouth timing before delivery.
This is an editorial order for starting your tests, not a measured quality ranking. We consider the available inputs, duration, audio and output options for this task. The clips use different prompts and settings; a single result cannot establish which model is best. Check the full model details before you create.