Skip to content

[diffusion] model: support Ltx 2.3 two stage ti2v#22667

Merged
mickqian merged 55 commits intosgl-project:mainfrom
mickqian:ltx-2.3-two-stage-ti2v
Apr 14, 2026
Merged

[diffusion] model: support Ltx 2.3 two stage ti2v#22667
mickqian merged 55 commits intosgl-project:mainfrom
mickqian:ltx-2.3-two-stage-ti2v

Conversation

@mickqian
Copy link
Copy Markdown
Collaborator

@mickqian mickqian commented Apr 13, 2026 •
edited
Loading

Reproduce

sglang generate \
  --model-path Lightricks/LTX-2.3 \
  --pipeline-class-name LTX2TwoStagePipeline \
  --prompt "A beautiful sunset over the ocean" \
  --negative-prompt "shaky, glitchy, low quality, worst quality, deformed, distorted, disfigured, motion smear, motion artifacts, fused fingers, bad anatomy, weird hand, ugly,
transition, static." \
  --image-path /tmp/ltx23_i2v_input_sunset.png \
  --width 1536 \
  --height 1024 \
  --seed 10 \
  --save-output

sglang:

current_sglang_two_stage.mp4

official:

official_two_stage.mp4

Motivation

Modifications

Accuracy Tests

Speed Tests and Profiling

Checklist

Review and Merge Process

  1. Ping Merge Oncalls to start the process. See the PR Merge Process.
  2. Get approvals from CODEOWNERS and other reviewers.
  3. Trigger CI tests with comments or contact authorized users to do so.
    • Common commands include /tag-and-rerun-ci, /tag-run-ci-label, /rerun-failed-ci
  4. After green CI and required approvals, ask Merge Oncalls or people with Write permission to merge the PR.

@gemini-code-assist
Copy link
Copy Markdown
Contributor

gemini-code-assist Bot commented Apr 13, 2026

Warning

You have reached your daily quota limit. Please wait up to 24 hours and I will start processing your requests again!

@github-actions github-actions Bot added diffusion SGLang Diffusion lora labels Apr 13, 2026
@mickqian mickqian force-pushed the ltx-2.3-two-stage-ti2v branch from d8f0933 to ebb5216 Compare April 14, 2026 01:58
@mickqian mickqian marked this pull request as ready for review April 14, 2026 02:25
@gemini-code-assist
Copy link
Copy Markdown
Contributor

gemini-code-assist Bot commented Apr 14, 2026

Warning

You have reached your daily quota limit. Please wait up to 24 hours and I will start processing your requests again!

@mickqian
Copy link
Copy Markdown
Collaborator Author

mickqian commented Apr 14, 2026

/tag-and-rerun-ci

mickqian added 15 commits April 14, 2026 10:25
@mickqian
[diffusion] align LTX-2.3 TI2V bundled overlay defaults
4672af4
@mickqian
[diffusion] add bundled LTX-2.3 materializer
fe4159e
@mickqian
[diffusion] align LTX TI2V image crop semantics
e8acea0
@mickqian
Revert "[diffusion] align LTX TI2V image crop semantics"
cf7abdf 
This reverts commit 61c2845.
@mickqian
[diffusion] align LTX-2.3 TI2V stage2 clean background
0bc8426
@mickqian
[diffusion] test unmerged LTX-2.3 stage2 distilled lora
77b5508
@mickqian
[diffusion] restore LTX-2.3 stage2 LoRA merge
f8edb18
@mickqian
[diffusion] backfill LTX-2 audio VAE decode stats
10149ae
@mickqian
[diffusion] test LTX-2.3 stage2 unpacked re-noise
b500afa
@mickqian
Revert "[diffusion] test LTX-2.3 stage2 unpacked re-noise"
7b5ff5b 
This reverts commit 588b6b7.
@mickqian
[diffusion] sync LTX-2.3 runtime VAE markers
e264a51
@mickqian
[diffusion] read LTX runtime markers from VAE arch config
41a8958
@mickqian
[diffusion] add LTX-2.3 TI2V native dump hook
9bfc671
@mickqian
[diffusion] dump LTX-2.3 TI2V stage2 step0 tensors
726e79f
@mickqian
[diffusion] dump LTX-2.3 TI2V stage2 internals
84d030e
@mickqian mickqian force-pushed the ltx-2.3-two-stage-ti2v branch from 04e16a2 to e95142e Compare April 14, 2026 02:26
@mickqian mickqian force-pushed the ltx-2.3-two-stage-ti2v branch from da4f7c3 to ea6b740 Compare April 14, 2026 02:48
@mickqian mickqian merged commit c5e9508 into sgl-project:main Apr 14, 2026
38 of 54 checks passed
@pandalee99 pandalee99 mentioned this pull request Apr 20, 2026
Closed
2 tasks
yhyang201 pushed a commit to yhyang201/sglang that referenced this pull request Apr 22, 2026
@mickqian
[diffusion] model: support Ltx 2.3 two stage ti2v (sgl-project#22667)
7681c61
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

@yhyang201 yhyang201 Awaiting requested review from yhyang201 yhyang201 is a code owner

@BBuf BBuf Awaiting requested review from BBuf BBuf is a code owner

@yingluosanqian yingluosanqian Awaiting requested review from yingluosanqian yingluosanqian is a code owner

@ping1jing2 ping1jing2 Awaiting requested review from ping1jing2 ping1jing2 is a code owner

Assignees

No one assigned

Labels

diffusion SGLang Diffusion lora run-ci

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

1 participant

@mickqian