Downloaded videos sometimes not compatible with Twitter

[TaktakTaktouk]

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Description of your issue

Many Time when I download a video with youtube-dl and I try to upload it to twitter I get an error "not valid video" I don't know what exactly the problem but when I change aspect ratio with FFmpeg
and the upload to Twitter work. ffmpeg -i input.mp4 -vf scale=480:854 -c:v h264

The majority of the videos that have this problem are downloaded from facebook.
here is how my youtube-dl commande:
youtube-dl -o 'output.%(ext)s' -f 'bestvideo[ext=mp4][width<=?1280][height<=?1024]+bestaudio[ext=m4a]/best[ext=mp4][width<=?1280][height<=?1024]/bestvideo[ext=webm]/best' URL

So is there a way to avoid this problem because it happens with more than 50% of videos. Here are some examples:
https://www.reddit.com/r/BeAmazed/comments/8ahgf9/how/
https://www.facebook.com/demotivateur/videos/10155981163584457/
https://www.reddit.com/r/aww/comments/8a8tlz/curious_baby_octopus/