Recode Your Video To Match Telegram Video Sticker Spec
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The following command will help you resize your video to match Telegram’s specification, one side must be exactly 512 pixels in size – the other side can be 512 pixels or less.
-vf "scale='if(eq(a,1),512,if(gt(a,1),512,-2))':'if(eq(a,1),512,if(gt(a,1),-2,512))'": Helps to resize your video to match Telegram’s specification, one side must be exactly 512 pixels in size – the other side can be 512 pixels or less.
-c:v libvpx-vp9: VP9 encoding
-an: Remove Audio, since you’re making stickers, audios were useless
-crf 24 -b:v 0 -r 30: crf and b:v controls the quality and -r controls your video framerate, Telegram has a filesize limit at 256KB, so you might have to raise crf value depending on your original video quelity
