How to create/send a telegram-conform video format?

General
1

Dear all,

I use the telegram node and a telegram bot to send short video files to telegram, like explained here:

This works, but I cannot watch the video on my mobile phone instantly/directly in telegram. The first frame is shortly shown but then it gets white (WHY??) - it is offered / passed by telegram to a different location/app and then it is displayed. That's on a mobile. I can watch it immidiately on the telegram PC client.

I send it using a telegram sender node and function for the payload like:

let payload = {
    "chatId":111111111,
    "type":"video",
    "content":"/home/auser/video/myvideo.mp4"
};
return {payload};

The video itself is recorded by a shell script (simple usb camera connected to a Raspberry Pi):

#!/bin/bash
video_file="/home/auser/video/myvideo.mp4"
rm $video_file
ffmpeg -i /dev/video0 -t 8 -v "error" $video_file

Somebody knows about this?

2

Is that the same PC that the video file is saved on?

I am not certain, but it looks like the video is not actually sent - but instead - a path to the video. i.e. your phone wont have access to /home/auser/video/myvideo.mp4. My guess is you would need to generate a buffer & send as attachment.

for example, if you send a URL to a video instead, that will work.

or perhaps it does work but your phone doesnt like the MP4 encoding?

Try manually copying the mp4 file to your phone - does it play?

3

I tested similar and this works fine for me (viewing on an Iphone, Ipad and mac, no problems)

image
image1291Ă—513 133 KB

Code in my function node below. The mp4 file is located in /home/pi

msg.payload = {content:"/home/pi/pedestrians.mp4", type:"video", chatId:xxxxxx};
return msg;
1 Like
4

no.

yes, it plays, just not with the Telegram app, but with a different player (mxplayer)

Ok; how did you create / encode the video?

5

I did not, was a mp4 video I had already

6

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