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fix(gallery/ltx-2.3): add vae_decode_only:false for i2v / flf2v#9987

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mudler merged 1 commit into
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fix/gallery-ltx2-vae-decode-only
May 25, 2026
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fix(gallery/ltx-2.3): add vae_decode_only:false for i2v / flf2v#9987
mudler merged 1 commit into
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fix/gallery-ltx2-vae-decode-only

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@mudler mudler commented May 25, 2026

LTX-2.3 i2v inference fails inside generate_video with:

[ERROR] LTXAV image conditioning requires VAE encoder weights;
create the context with vae_decode_only=false

Without vae_decode_only:false in the options block, gosd.cpp creates the sd_ctx with VAE encoder weights freed, so latent encoding of the init_image is impossible. Adding the option mirrors what we already do for Wan i2v entries.

Affects all six LTX-2.3 entries (dev/distilled × UD-Q4_K_M, Q4_K_M, Q8_0). T2V wasn't impacted by the missing option since it has no init image to encode, which is why the T2V smoke earlier passed.

Assisted-by: Claude:claude-opus-4-7

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This PR fixes #

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LTX-2.3 i2v inference fails inside generate_video with:

  [ERROR] LTXAV image conditioning requires VAE encoder weights;
  create the context with vae_decode_only=false

Without vae_decode_only:false in the options block, gosd.cpp creates
the sd_ctx with VAE encoder weights freed, so latent encoding of the
init_image is impossible. Adding the option mirrors what we already
do for Wan i2v entries.

Affects all six LTX-2.3 entries (dev/distilled × UD-Q4_K_M, Q4_K_M,
Q8_0). T2V wasn't impacted by the missing option since it has no
init image to encode, which is why the T2V smoke earlier passed.

Assisted-by: Claude:claude-opus-4-7
@mudler mudler merged commit c2cd3b9 into master May 25, 2026
20 of 21 checks passed
@mudler mudler deleted the fix/gallery-ltx2-vae-decode-only branch May 25, 2026 19:40
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