Black preview when sending video Telegram bot api. How to fix?

K

Kozlov2018-03-24 13:03:37

PHP

Kozlov, 2018-03-24 13:03:37

When sending a video via Telegram bot api, the message comes without a preview, just a black square. How to fix? I tried to convert to everything that is possible, nothing comes out.

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Monty Python, 2018-03-24
@romandkoz

Use .mp4

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