LTX: sound, voice or lip-sync, note by note
3 LTX entries on sound, voice or lip-sync, 9 December 2025 to 19 August 2026, across LTX-2.5. The latest: audio-to-video takes a frame rate, a last frame and camera motion. From 3 source pages, read 2026-09-25; no maker pays to be listed.
| Line | Entries |
|---|---|
| Google Veo | 1 |
| Grok Imagine | 2 |
| Kling AI | 7 |
| LTX | 3 |
| PixVerse | 3 |
| Vidu | 2 |
| Wan | 4 |
Inclusion rule. Lines with at least one entry of this kind. Order. Alphabetical by line.
LTX has 3 entries on sound, voice or lip-sync in the register, the first of them dated 9 December 2025.
1The entries
9 December 2025, Not named in the note
New audio-to-video endpoint for generating videos driven by audio input, with dedicated prompt enhancement.
LTX, API changelog
- Audio-to-Video APIAudio-to-video drives a clip from an audio track
18 August 2026, LTX-2.5
now supports the same resolution tiers as text-to-video and image-to-video
LTX, API changelog
- Audio-to-video resolution parityAudio-to-video gets the same resolution tiers as the other modes
252 days after the entry before it.
19 August 2026, Not named in the note
Audio-to-video now supports fps (default 24), last_frame_uri (requires image_uri), and camera_motion
LTX, API changelog
- Audio-to-video generation paramsAudio-to-video takes a frame rate, a last frame and camera motion
The next day.
2The same kind of change in other lines
- Google Veo: 1 entry, July 2025
- Grok Imagine: 2 entries, July 2026 to August 2026
- Kling AI: 7 entries, December 2024 to March 2026
- PixVerse: 3 entries, June 2025 to September 2025
- Vidu: 2 entries, July 2025 to November 2025
- Wan: 4 entries, September 2025 to April 2026
LTX, every entry · Sound, voice and lip-sync, every line · LTX-2.5
3Notes read
- LTX, API changelog, note of 9 December 2025, read 2026-09-25
- LTX, API changelog, note of 18 August 2026, read 2026-09-25
- LTX, API changelog, note of 19 August 2026, read 2026-09-25
4Where new versions end up
Release notes such as “LTX” matter once a pipeline runs the models; SceneMixer's guides describe how it does:
Lip sync is the default: the picture stays frame for frame, every line is voiced again and the mouths are moved to match; the original ambience is dropped.
SceneMixer, Lip Sync or Re-perform: Choosing How to Redub a Clip (read 2026-10-13)
Doubao Seed 2.1 Pro is the family’s full-size tier at 100% of the base text rate, twice the default. Same three jobs — reading, writing, storyboards — with more headroom on long, crowded episodes: it holds the storyboard’s strict format more reliably and keeps track of many characters and locations in one pass.
SceneMixer, Doubao Seed 2.1 Pro (read 2026-10-13)