01
Connect Medux MCP to Codex
Add the Medux remote MCP endpoint to Codex, provide an authorized credential, and confirm that the medux_resize_video tool is available.
Unified Codex + Claude tutorial · media
How to resize a video with Medux MCP
Learn to resize a video with the Medux API through Codex or Claude MCP. Check inputs, tool calls, task status, and output.
POST/api/app/v1/process/video/resize_video
Resize a video to a target resolution.
Open the Resize Video API reference →Choose your AI client
Follow the Codex or Claude workflow
The Medux operation and request fields are shared. Switch tabs for the client-specific prompt, approval pattern, screenshots, and walkthrough.
Codex-specific workflow
Run Resize a Video as a Codex MCP task
Use the active workspace as the source of truth. Ask Codex to identify the source video and exact target width and height, select medux_resize_video, and keep the Medux task ID and returned output with the rest of the project. Naming the input roles and the expected result prevents an agent from guessing which file should be used where.
Codex prompt pattern
In this workspace, use medux_resize_video through Medux MCP to resize a video.
First inspect and identify the source video and exact target width and height.
Show me the exact tool arguments before execution.
After the task completes, return the resized video and verify that the output dimensions match the request and the full video plays correctly.Approval gate
Before approving the call, compare the selected tool, file or asset IDs, ordering, timing, and output settings with the request. If a local filename was mapped to an uploaded Medux file ID, keep that mapping visible so it can be audited later.
Result verification
Let Codex monitor an asynchronous task until it reaches a terminal state, then save or report the resized video. The final check is explicit: confirm that the output dimensions match the request and the full video plays correctly.
What this tutorial does
Medux operation
Resize a video to a target resolution.
Agent workflow
Codex selects medux_resize_video, presents the arguments for review, calls Medux, and reports the response.
Before you start
Authentication
- Authentication is required via Authorization header.
Preconditions
- Upload the source file and create a file reference before calling this endpoint.
- Successful requests return a Medux task record immediately. Use the task query or sync endpoints to track completion.
- All file inputs must be uploaded and persisted as file references before submission.
Prompt Codex
Start with a clear instruction that names the Medux operation and the intended inputs.
Resize a video to a target resolution.Request fields to review
Confirm these values before approving the MCP tool call. The linked API page remains the source of truth for current limits and response semantics.
| Field | Type | Requirement | Purpose |
|---|---|---|---|
input_file_id | string | Required | Input video file id. |
width | integer | Required | Output width in pixels. |
height | integer | Required | Output height in pixels. |
model_id | string | Optional | Model Default: resize-video-default. |
title | string | Optional | Optional task title. |
Step-by-step workflow
02
Prepare the required inputs
Prepare the source files, asset IDs, text, or settings required by the operation. Upload local media first when the tool requests file IDs.
03
Ask Codex to run Resize Video
Use one direct instruction with the intended values. Codex should select the Medux tool and show the proposed arguments before execution.
04
Review and approve the tool call
Check that the tool is medux_resize_video and that each file ID, task ID, option, and output setting matches your request before approving it.
05
Check the Medux response
If Medux returns an asynchronous task, let the agent monitor it until completion; otherwise review the immediate response and save any result identifiers or output URLs.
Workflow recap
User goal
↓
Codex selects medux_resize_video
↓
Review inputs and approve the tool call
↓
Medux runs Resize Video
↓
Codex reports the response and outputFrequently asked questions
Can Codex use the Medux Resize Video API through MCP?
Codex can call the medux_resize_video Medux MCP tool to resize a video to a target resolution. This guide covers the required inputs, approval flow, result handling, and the matching API reference.
Which MCP tool does this tutorial use?
This workflow uses medux_resize_video. Review its arguments before approval and consult the API reference for the current contract.
Claude-specific workflow
Run Resize a Video as a Claude MCP workflow
Keep the goal, source assets, and constraints together in the conversation. Ask Claude to restate the source video and exact target width and height before proposing medux_resize_video. That context checkpoint makes the file roles and desired outcome easy to correct before any Medux call is approved.
Claude prompt pattern
Using the assets and requirements in this conversation, help me resize a video with Medux MCP.
Restate which input fulfills each role: the source video and exact target width and height.
Propose the medux_resize_video call and summarize its arguments before asking for approval.
When it finishes, return the resized video with a checklist confirming that the output dimensions match the request and the full video plays correctly.Context checkpoint
Have Claude summarize the intended transformation, identify every source asset by role, and list the important constraints. Review that summary together with the proposed tool arguments; correct the conversation first if a file, order, time range, or setting is ambiguous.
Result verification
Keep the Medux task ID in the conversation while Claude checks progress. When processing ends, ask for the resized video plus a concise validation checklist confirming that the output dimensions match the request and the full video plays correctly.
What this tutorial does
Medux operation
Resize a video to a target resolution.
Agent workflow
Claude selects medux_resize_video, presents the arguments for review, calls Medux, and reports the response.
Before you start
Authentication
- Authentication is required via Authorization header.
Preconditions
- Upload the source file and create a file reference before calling this endpoint.
- Successful requests return a Medux task record immediately. Use the task query or sync endpoints to track completion.
- All file inputs must be uploaded and persisted as file references before submission.
Prompt Claude
Start with a clear instruction that names the Medux operation and the intended inputs.
Resize a video to a target resolution.Request fields to review
Confirm these values before approving the MCP tool call. The linked API page remains the source of truth for current limits and response semantics.
| Field | Type | Requirement | Purpose |
|---|---|---|---|
input_file_id | string | Required | Input video file id. |
width | integer | Required | Output width in pixels. |
height | integer | Required | Output height in pixels. |
model_id | string | Optional | Model Default: resize-video-default. |
title | string | Optional | Optional task title. |
Step-by-step workflow
01
Connect Medux MCP to Claude
Add the Medux remote MCP endpoint to Claude, provide an authorized credential, and confirm that the medux_resize_video tool is available.
02
Prepare the required inputs
Prepare the source files, asset IDs, text, or settings required by the operation. Upload local media first when the tool requests file IDs.
03
Ask Claude to run Resize Video
Use one direct instruction with the intended values. Claude should select the Medux tool and show the proposed arguments before execution.
04
Review and approve the tool call
Check that the tool is medux_resize_video and that each file ID, task ID, option, and output setting matches your request before approving it.
05
Check the Medux response
If Medux returns an asynchronous task, let the agent monitor it until completion; otherwise review the immediate response and save any result identifiers or output URLs.
Workflow recap
User goal
↓
Claude selects medux_resize_video
↓
Review inputs and approve the tool call
↓
Medux runs Resize Video
↓
Claude reports the response and outputFrequently asked questions
Can Claude use the Medux Resize Video API through MCP?
Claude can call the medux_resize_video Medux MCP tool to resize a video to a target resolution. This guide covers the required inputs, approval flow, result handling, and the matching API reference.
Which MCP tool does this tutorial use?
This workflow uses medux_resize_video. Review its arguments before approval and consult the API reference for the current contract.