VideoGenReview

What each AI video model's release notes say changed

Start and end frames in AI video, by date

30 entries on start, end or middle frames from 14 of the 17 lines, 29 of them dated 29 July 2024 to 31 August 2026. The table lists each with its line and version; the chart counts them per line. As of 2026-09-25.

1Reading the notes

Frame notes let a user fix how a clip starts, ends or passes through. Runway's Gen-3 Alpha took a first frame in July 2024 and a last frame a week later; Gen-3 Alpha Turbo added both together and then a middle keyframe. Firefly, Kling, Wan, Veo, Midjourney and Vidu add start and end frames during 2025, often on one tier or mode first, as with Kling 2.1's pro mode only. In 2026 Kling allowed set frames inside multi-shot videos and pulled keyframes out of existing footage, and PixVerse's V6 note in March lists first and last frame among the inputs it supports.

Entries on frames per lineCounted from the table. Lines without an entry of this kind are left out.Entries on frames per lineKling AI55Runway55Google Veo33Wan33Adobe Firefly Video22Gemini Omni22Luma Ray22PixVerse22HappyHorse11LTX11Midjourney video11MiniMax Hailuo11Seedance11Vidu11
Fig. 1 Counted from the table. Lines without an entry of this kind are left out.
Entries on start, end or middle frames per line, read 2026-09-25.
LineEntries
Adobe Firefly Video2
Gemini Omni2
Google Veo3
HappyHorse1
Kling AI5
LTX1
Luma Ray2
Midjourney video1
MiniMax Hailuo1
PixVerse2
Runway5
Seedance1
Vidu1
Wan3

Inclusion rule. Lines with at least one entry of this kind. Order. Alphabetical by line.

2Every entry

Every entry on start, end or middle frames, oldest first.
DateLineVersionWhat changed
29 July 2024RunwayGen-3 AlphaGen-3 Alpha takes an image as the first frame
5 August 2024RunwayGen-3 AlphaThe image can be the first or the last frame
8 October 2024RunwayGen-3 Alpha TurboFirst and last frame input for Gen-3 Alpha Turbo
19 December 2024RunwayGen-3 Alpha TurboA middle keyframe between first and last
20 January 2025WanWan 2.1Wan 2.1 image-to-video Plus turns a still into a clip
12 February 2025Adobe Firefly VideoFirefly Video ModelKeyframes can be set at the start and at the end of a clip
31 March 2025Kling AIKling 1.6Kling 1.6 can generate from an end frame
7 April 2025WanWan 2.1Wan 2.1 start-and-end-frame model makes a transition between two images
23 June 2025Google VeoVeo 2Veo 2 on Vertex AI takes a last frame as well as a first, or a video to extend
25 July 2025Midjourney videoMidjourney V1 videoLooping, set start and end images, and video in the Discord bot
31 July 2025Google VeoVeo 3Image-to-video opens for the Veo 3 preview and a Veo 3 Fast preview is released
5 September 2025Kling AIKling 2.1Kling 2.1 takes a start and an end frame, in pro mode only
12 September 2025WanWan 2.2A Wan 2.2 first-and-last-frame model for transitions between two images
24 September 2025ViduVidu Q2Vidu Q2 Pro and Q2 Turbo for image-to-video and start-and-end frames
15 October 2025Google VeoVeo 3.1Veo 3.1 preview adds extension, up to three reference images and first-and-last-frame input
9 November 2025PixVerseNot named in the noteMulti-transition video and Video Edit are released
17 November 2025Kling AIKling 2.5 TurboKling 2.5 Turbo pro mode takes first and last frames
16 December 2025Adobe Firefly VideoFirefly Video ModelA start frame can be paired with a reference video whose camera motion the generation recreates
18 December 2025Luma RayRay3Ray3 Modify adds keyframe and character reference controls
21 January 2026RunwayGen-4.5Gen-4.5 takes a first frame image with the prompt
30 January 2026Kling AINot named in the noteKeyframes pulled from a video can serve as start and end frames; .mov export added
31 March 2026PixVersePixVerse V6V6 covers text-to-video, image-to-video, first and last frame and extend
7 May 2026Kling AINot named in the noteMulti-shot videos can have set first and last frames
9 June 2026Luma RayRay3.2Ray3.2 adds frame-level control over how action moves
16 June 2026HappyHorseHappyHorse 1.1HappyHorse 1.1 image-to-video names consistency across clips
19 August 2026LTXNot named in the noteAudio-to-video takes a frame rate, a last frame and camera motion
27 August 2026Gemini OmniGemini Omni 1.1 FlashGemini Omni 1.1 Flash goes GA with extension, first-and-last-frame input and 360p to 4K output
28 August 2026Gemini OmniGemini Omni 1.1 FlashGemini Omni 1.1 Flash on Higgsfield, up to 10 seconds and 4K
31 August 2026MiniMax HailuoMiniMax H3 MaxMiniMax H3 Max, a variant tuned for prompt adherence, on Higgsfield
Undated version rowSeedanceSeedance 1.0 ProSeedance 1.0 Pro: 2 to 12 seconds, up to 1080p, first and last frames

Inclusion rule. All entries tagged with this kind of change, including platform arrivals and undated rows. Order. By date, oldest first; undated rows last.

3One line at a time

4Using the models, not reading about them

Release notes such as “Start, end and middle frames” matter once a pipeline runs the models; SceneMixer's guides describe how it does:

The shots add up to more than the selected video tier allows for one segment.

SceneMixer, Shot Seconds: Changing Timing, and the Limits — “What does 'over cap' mean on the segment card?” (read 2026-10-13)

Wan 3.0 · 480P is the tier every new project starts on.

SceneMixer, Wan 3.0 · 480P: the default video tier (read 2026-10-13)

5Other kinds of change