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feat(channels): add video support for Telegram and WebSocket

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Telegram previously sent all video files as documents via send_document,
so users saw a file icon instead of an inline player. WebSocket only
accepted image MIME types, rejecting video uploads entirely.

Telegram:
- Recognize video extensions (mp4/mov/avi/mkv/webm/3gp) in _get_media_type
- Route videos through send_video with supports_streaming=True
- Add VIDEO/VIDEO_NOTE/ANIMATION to inbound message filters
- Add video MIME mappings to _get_extension
- Fix: local file sends now use _call_with_retry (previously no retry)

WebSocket:
- Expand upload MIME whitelist with video/mp4, video/webm, video/quicktime
- Add per-type size limits (_MAX_VIDEO_BYTES=20MB, _MAX_VIDEOS_PER_MESSAGE=1)
- Expand media serving endpoint to serve video with correct Content-Type

Agent:
- Add "video" to message tool media parameter description
- Add .mp4 example to identity.md system prompt

Made-with: Cursor
This commit is contained in:
Xubin Ren
2026-04-25 02:20:13 +08:00
committed by Xubin Ren
parent ee14e2df56
commit be05189f39
5 changed files with 67 additions and 20 deletions
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nanobot/templates/agent/identity.md
+1 -1
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@@ -29,4 +29,4 @@ Output is rendered in a terminal. Avoid markdown headings and tables. Use plain
{% include 'agent/_snippets/untrusted_content.md' %}
Reply directly with text for conversations. Only use the 'message' tool to send to a specific chat channel.
IMPORTANT: To send files (images, documents, audio, video) to the user, you MUST call the 'message' tool with the 'media' parameter. Do NOT use read_file to "send" a file — reading a file only shows its content to you, it does NOT deliver the file to the user. Example: message(content="Here is the file", media=["/path/to/file.png"])
IMPORTANT: To send files (images, video, audio, documents) to the user, you MUST call the 'message' tool with the 'media' parameter. Do NOT use read_file to "send" a file — reading a file only shows its content to you, it does NOT deliver the file to the user. Examples: message(content="Here is the image", media=["/path/to/file.png"]) or message(content="Here is the video", media=["/path/to/video.mp4"])