I am using n8n to download videos from multiple sites with yt-dlp and upload them to telegram.
I have created a node to read video with read binary file - send video to telegram and use a thumbnail for video.
the picture is in jpg format and size is under 320 pixels. but when the video is uploaded, there is no thumbnail and its white.
how to set thumbnail for this ?
Information on your n8n setup
n8n version: 0.206.1
Database you’re using (default: SQLite): default
Running n8n with the execution process [own(default), main]: default
Running n8n via [Docker, npm, n8n.cloud, desktop app]: Docker
Quick update for you, I have just tried to send a simple request using Postman to the Telegram API and it looks like it is failing outside of n8n as well. I have sent a message to Telegram Bot support to find out if there is something missing in their API docs or if it is just not supported, I will let you know when I hear back from them.