When adding a webm video to a sticker pack. Initially it plays at the correct speed.
But then an few hours later the sticker suddenly plays too fast trough the frames on the mobile app.
But on desktop the webm sticker still plays the correct speed.
This happens on multiple iphones across multiple IOS versions.
Make a webm video with a low amount of frames. For example a simple 10 frame animation with varying delays between the frames.
Upload to an sticker pack and test if it plays correctly like it does on external media players.
Then check the sticker later and observe the display frame rate being different on certain devices.
Telegram iOS 12.4.1 (32360), iPhone 13 Mini, 18.7.3
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