feat(google): pass Gemini agentic video through instead of flattening it - #4663
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: ASSERTIVE Plan: Advanced Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThe request path preserves video ChangesGemini video pass-through
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Client
participant InboundConversion
participant ResponseParser
participant GoogleAdapter
participant Gemini
Client->>InboundConversion: send video_url with URI and processing
InboundConversion->>ResponseParser: create input_video block
ResponseParser->>GoogleAdapter: preserve videoUrl and processing
GoogleAdapter->>GoogleAdapter: validate YouTube or Files API URI
GoogleAdapter->>Gemini: send file_data, inline_data, or text marker
Merge Risk: ⚪ Minimal · up to The Gemini video pass-through preserves requested processing metadata and restricts remote fetching to approved video URI formats. No current merge-blocking risk is identified. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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리뷰 · 우선순위 59 / 80설명 이 PR은 Gemini의 에이전틱 비디오 이해(processing: "agentic")를 OpenCodex가 처음부터 끝까지 살아서 넘기게 만드는 수정입니다. 지금 고친 길은 Chat 입구 → Responses 스키마 → IR → Google 어댑터입니다. 보안 쪽도 잘 짚었습니다. 지금 저자가 솔직히 적은 구멍도 그대로입니다.
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Inline comments:
In `@src/adapters/google.ts`:
- Around line 359-361: Update the video-part construction in the Google adapter
to map the caller’s accepted processing value, such as "agentic", to the
GenerateContent enum "AGENTIC" and emit it as media_processing for both
inline_data and file_data representations. Preserve non-video handling, and
update the existing assertions plus an inline-data regression test to verify the
wire field.
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📒 Files selected for processing (6)
src/adapters/google.tssrc/chat/inbound.tssrc/responses/parser-content.tssrc/responses/schema.tssrc/types/request.tstests/adapters/google/google-adapter.test.ts
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…essed mime Three corrections from review, all confirmed against Google's video-understanding docs rather than taken on trust: 1. GenerateContent reads `media_processing` with an upper-case enum (STATIC | AGENTIC) on the part. `processing: "agentic"` is the Interactions API spelling and is ignored here, so forwarding the caller's field verbatim looked like a pass-through while agentic mode never engaged. Caught by CodeRabbit on lidge-jun#4663. 2. The field rides on the PART, so it applies to inline_data exactly as to file_data. Emitting it on only the fetched-uri branch dropped the mode for callers who inline their clip. 3. Dropped the invented `mime_type: "video/*"`. The documented REST example for a YouTube part carries file_uri alone, and the Files API knows the type of what it stored. Also adds music.youtube.com and youtube-nocookie.com to the allowlist — same service, and the omission was an oversight rather than a decision.
…essed mime Three corrections from review, all confirmed against Google's video-understanding docs rather than taken on trust: 1. GenerateContent reads `media_processing` with an upper-case enum (STATIC | AGENTIC) on the part. `processing: "agentic"` is the Interactions API spelling and is ignored here, so forwarding the caller's field verbatim looked like a pass-through while agentic mode never engaged. Caught by CodeRabbit on lidge-jun#4663. 2. The field rides on the PART, so it applies to inline_data exactly as to file_data. Emitting it on only the fetched-uri branch dropped the mode for callers who inline their clip. 3. Dropped the invented `mime_type: "video/*"`. The documented REST example for a YouTube part carries file_uri alone, and the Files API knows the type of what it stored. Also adds music.youtube.com and youtube-nocookie.com to the allowlist — same service, and the omission was an oversight rather than a decision.
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@lidge-jun — all four of your points are addressed; pushed and description rewritten. The wire spelling you said to confirm before merge: it was wrong. You were right that it was cheaper to check than to revert. @coderabbitai found it with a citation and I verified it against Google's docs rather than taking the bot's word:
Draft checklist — filled 4/4. I rebased onto The one thing still worth your eye is that I forward |
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
printf '%s\n' '=== PR metadata ==='
gh pr view 4663 --repo lidge-jun/opencodex --json isDraft,body,baseRefOid,headRefOid,statusCheckRollup --jq '{isDraft, body, baseRefOid, headRefOid, statusCheckRollup: [.statusCheckRollup[]? | {name, status, conclusion}]}'
printf '%s\n' '=== Changed files ==='
gh pr view 4663 --repo lidge-jun/opencodex --json files --jq '.files[].path'
printf '%s\n' '=== Source outlines ==='
ast-grep outline src/adapters/google.ts --items all --match 'geminiFetchableVideoUri|geminiMediaProcessing|messagesToGeminiFormat'
ast-grep outline src/chat/inbound.ts --items all --match 'translateContent|video'
ast-grep outline src/responses/parser-content.ts --items all --match 'inputContentParts'
ast-grep outline src/responses/schema.ts --items all --match 'inputVideoBlockSchema'
printf '%s\n' '=== Relevant source and test references ==='
rg -n -C 8 'geminiFetchableVideoUri|geminiMediaProcessing|media_processing|inputVideoBlockSchema|processing' \
src/adapters/google.ts src/chat/inbound.ts src/responses/parser-content.ts src/responses/schema.ts src/types/request.ts tests/adapters/google/google-adapter.test.tsLength of output: 38506 🤖 web_search executed:
Length of output: 20669
Google’s GenerateContent documentation defines I do not recommend a local No blocking finding from this review. 🐇 ✅ ✏️ Learnings added
You are interacting with an AI system. |
…essed mime Three corrections from review, all confirmed against Google's video-understanding docs rather than taken on trust: 1. GenerateContent reads `media_processing` with an upper-case enum (STATIC | AGENTIC) on the part. `processing: "agentic"` is the Interactions API spelling and is ignored here, so forwarding the caller's field verbatim looked like a pass-through while agentic mode never engaged. Caught by CodeRabbit on lidge-jun#4663. 2. The field rides on the PART, so it applies to inline_data exactly as to file_data. Emitting it on only the fetched-uri branch dropped the mode for callers who inline their clip. 3. Dropped the invented `mime_type: "video/*"`. The documented REST example for a YouTube part carries file_uri alone, and the Files API knows the type of what it stored. Also adds music.youtube.com and youtube-nocookie.com to the allowlist — same service, and the omission was an oversight rather than a decision.
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The exact-head implementation at 5e61320ca56b532414b65e86da5b9e3de2e613fb is technically sound: it preserves the caller field through both Chat and Responses ingress, emits GenerateContent media_processing on both inline and fetched video parts, and keeps URI fetching behind exact HTTPS host/path checks. Exact-head CI is green and the focused tests cover the important wire and look-alike cases.\n\nOne completion blocker remains under this repository policy: this is a new user-facing adapter input contract, but neither docs-site/ nor structure/ documents it. Please add a concise English source entry under docs-site/src/content/docs/reference/adapters.md describing the accepted OpenAI-compatible video_url object (url plus optional processing), the AGENTIC mapping, and the supported URI forms; keep the existing translated adapter references from contradicting that source. Also record the current internal contract in structure/ at the Google adapter boundary. No broad rewrite is needed.\n\nOnce the documentation is synchronized and exact-head CI remains green, this is a strong merge candidate.
Agentic video understanding could not be requested at all, because the request lost what it needed twice on the way in: 1. inputVideoBlockSchema did not declare `processing`, and z.object() strips undeclared keys, so the mode was gone before any adapter ran. 2. The Google adapter turned every non-data: video URL into a `[video: <url>]` text marker, so a YouTube or Files API URI never arrived as a video in the first place. `processing` now survives Chat ingress, the Responses schema, the IR and the adapter, and is emitted only when the caller sent it — no existing request gains an unknown upstream field. Fetchable URIs are an allowlist of the two forms Google documents, YouTube and the Files API, not "anything that is not a data: URL": file_data tells Gemini to dereference the URL, so a wildcard would make the proxy the reason a caller's private host got fetched by Google. Every other URL keeps the marker, which is what the existing does-not-mislabel-an-arbitrary-remote-URL test pins. Covers axis 2 of lidge-jun#3377; axis 1 (--text-only) already shipped. Closes lidge-jun#3271
…essed mime Three corrections from review, all confirmed against Google's video-understanding docs rather than taken on trust: 1. GenerateContent reads `media_processing` with an upper-case enum (STATIC | AGENTIC) on the part. `processing: "agentic"` is the Interactions API spelling and is ignored here, so forwarding the caller's field verbatim looked like a pass-through while agentic mode never engaged. Caught by CodeRabbit on lidge-jun#4663. 2. The field rides on the PART, so it applies to inline_data exactly as to file_data. Emitting it on only the fetched-uri branch dropped the mode for callers who inline their clip. 3. Dropped the invented `mime_type: "video/*"`. The documented REST example for a YouTube part carries file_uri alone, and the Files API knows the type of what it stored. Also adds music.youtube.com and youtube-nocookie.com to the allowlist — same service, and the omission was an oversight rather than a decision. Co-authored-by: Abhishek Sharma <abhicse24@gmail.com>
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3 participants
Covers axis 2 of #3377 (originally reported as #3271, which was folded into #3377 on 3 Sep — so no auto-close keyword here; #3377 is the one to update). Axis 1 (
--text-only) already shipped ondev.Summary
Agentic video understanding couldn't be requested at all. The request lost what it needed twice on the way in, and neither loss was visible:
src/responses/schema.ts:14—inputVideoBlockSchemadeclared onlytypeandvideo_url.z.object()strips undeclared keys, soprocessingwas gone before any adapter ran. Silently: a stripped key is not a validation error.src/adapters/google.ts:327— every non-data:video URL became{ text: "[video: <url>]" }. So even with the mode intact, the video never arrived as a video. A YouTube URL reached Gemini as a sentence describing a YouTube URL.Fixing either alone does nothing, which is probably why this looked like a provider limitation.
Review found the thing I'd flagged as unverified — three corrections
The first version of this PR said I couldn't confirm where
processingbelongs on the Gemini wire and asked for help. @coderabbitai answered it with a citation, and it was wrong in two ways, not one. I verified both against Google's video-understanding docs rather than taking the finding on trust:processing: "agentic"— the Interactions API spelling, ignored by GenerateContentmedia_processing: "AGENTIC"(enum:STATIC|AGENTIC)file_dataonlyfile_dataandinline_data— it rides on the partmime_type"video/*", invented by mefile_urialoneThe first was the worst kind of bug: it would have looked like a working pass-through in every test I'd written, while agentic mode never engaged. The second silently dropped the mode for anyone inlining their clip. Both now have their own test, and the third removes a value I had no basis for.
I also added
music.youtube.comandyoutube-nocookie.comto the allowlist — @lidge-jun asked whether the omission was deliberate. It wasn't; same service, same fetch path.media_processingis upper-cased and forwarded rather than checked against our own copy of the enum: that list is Google's to extend, and a stale allowlist here would silently downgrade a caller using a newer mode. An unrecognized value fails upstream naming the field, which beats us dropping it.The allowlist, and why it isn't
!isDataUrlThe obvious version of this change is "if it's not a
data:URL, make itfile_data." I didn't do that, becausefile_datais an instruction to Gemini to go and fetch the URL. A wildcard would make OpenCodex the reason a caller's internal or pre-signed URL gets dereferenced by Google — from Google's egress, not the caller's.So
geminiFetchableVideoUrimatches the forms Google documents and nothing else: the YouTube hosts (incl.youtu.be,music.,-nocookie) andgenerativelanguage.googleapis.com/…/files/<id>. Host-matched, not substring-matched, andhttps:only —https://youtube.com.evil.test/watch?v=xstays a marker, and there's a test for exactly that plushttp://www.youtube.com/....This also means the existing
does not mislabel an arbitrary remote video URL as Gemini file_datatest keeps passing untouched, which I took as the design constraint rather than something to update.Verification
Rebased onto current
dev(aa91958e3), so this is 0 commits behind.Both pre-existing failures verified by stashing this branch and re-running on unmodified
dev:Antigravity live model discovery > uses the CCA agent list and applies CCA metadata— fails identically with my changes stashed.src/server/responses/fetch-helpers.ts(195,7)and(208,7),'timeout' does not exist in type 'RequestInit'— same two, same lines.Every guard mutation-tested rather than trusted on a green run:
inline_databranchmime_typeprocessingdata:URL againThe fifth row is the useful one: it shows the allowlist is what keeps the existing invariant true, not a coincidence of which hosts the old tests happened to use.
Checklist
structure/doc asserted the old flattening (SSOT check passes).file_dataallowlist, covered above and pinned by the look-alike test.Review readiness checklist
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All CI tests are green on my local testing.
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