Upstream replaced the ad-hoc video stdin handling with a proper RAII
refactor (ggml-org/llama.cpp#24316, "mtmd: refactor video subproc
handling"), which includes the same `sp->stdin_file = nullptr` guard our
patch added (plus join-before-destroy ordering). Re-pin LLAMA_VERSION to
that branch head and drop patches/0001 - it's now redundant.

Verified e2e with gemma-4-e2b-it-qat-q4_0: no crash, video frames decode
and the model answers correctly (red clip -> "Red", blue -> "Blue").

NOTE: #24316 is not yet merged, so this pins to its branch-head commit
(28ca1e60). Re-pin to the squash-merge commit on master once it lands,
otherwise `git fetch` may lose the commit after the branch is deleted.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* chore(llama-cpp): bump to 8f83d6c for mtmd video input support

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(llama-cpp): forward video input to mtmd (template + non-template paths)

Wire request->videos() into grpc-server.cpp mirroring the existing image
and audio handling: a video_data build + non-template files extraction, and
input_video chat chunks on the tokenizer-template path. allow_video is
auto-set at model load by the vendored upstream chat_params.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(ui): add video attachment support to the chat UI

Mirror the image/audio attachment path for video: emit video_url content
parts, accept video/* in the picker, keep video files as base64, show a
film icon badge, and render attached video inline with a <video> player.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* fix(llama-cpp): patch mtmd video stdin double-close (heap crash)

Upstream mtmd video input (ggml-org/llama.cpp#24269) double-fcloses the
ffmpeg/ffprobe stdin FILE: feed_stdin() fclose()s the FILE returned by
subprocess_stdin() (which is sp->stdin_file), then subprocess_destroy()
fclose()s the same pointer again -> heap corruption that aborts the
backend on any base64 input_video request (the CLI --video file path is
unaffected). Vendor a one-line fix (null sp->stdin_file after fclose)
via prepare.sh's patches/ until upstream merges it.

Verified e2e with gemma-4-e2b-it-qat-q4_0: video frames decode via
ffmpeg and the model answers correctly (red clip -> 'Red', blue -> 'Blue').

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* chore(llama-cpp): re-pin to upstream #24316, drop vendored stdin patch

Upstream replaced the ad-hoc video stdin handling with a proper RAII
refactor (ggml-org/llama.cpp#24316, "mtmd: refactor video subproc
handling"), which includes the same `sp->stdin_file = nullptr` guard our
patch added (plus join-before-destroy ordering). Re-pin LLAMA_VERSION to
that branch head and drop patches/0001 - it's now redundant.

Verified e2e with gemma-4-e2b-it-qat-q4_0: no crash, video frames decode
and the model answers correctly (red clip -> "Red", blue -> "Blue").

NOTE: #24316 is not yet merged, so this pins to its branch-head commit
(28ca1e60). Re-pin to the squash-merge commit on master once it lands,
otherwise `git fetch` may lose the commit after the branch is deleted.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

---------

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Co-authored-by: Ettore Di Giacinto <mudler@localai.io>

* upstream/HEAD: (329 commits)
  vendor : update LibreSSL to 4.3.2 (ggml-org#24397)
  Remove padding and multiple D2D copies for MTP (ggml-org#24086)
  chat: fix LFM2/LFM2.5 ignoring json_schema (ggml-org#24377)
  CUDA: Fix ssm_scan_f32 data-races (ggml-org#24360)
  ci : bump komac version (ggml-org#24396)
  speculative : fix "ngram-map-k4v" name in logging (ggml-org#24253)
  webui: implement pinned conversations support (ggml-org#21387)
  graph: Fix granite speech model inference by applying embedding scale when deepstack is not used (ggml-org#24357)
  ci : fix windows release (ggml-org#24369)
  ui: add opt-in run_javascript frontend tool (ggml-org#24244)
  mtmd: build_vit batching (ggml-org#24352)
  vulkan: reduce iq1 shared memory usage for mul_mm (ggml-org#24287)
  vulkan: add `v_dot2_f32_f16` support in matrix-matrix multiplication and Flash Attention (ggml-org#24123)
  ui: Fix excessive style recalculation on hover (ggml-org#24243)
  mtmd: refactor video subproc handling (ggml-org#24316)
  server: log prompts to directory (ggml-org#22031)
  ui: fix mobile chat form overflow and bust stale bundle cache (ggml-org#24158)
  ggml : add GGML_OP_COL2IM_1D (ggml-org#24206)
  server : do not clear slots without unified KV cache (ggml-org#24190)
  models : fix plamo2 attention_key/value_length regression (ggml-org#24317)
  ...