There are several factors affect video processing: format, file size and upload traffic. You can try to delete the video and upload it again. Let us know if this works.
@TeamYouTube I've had a video processing since 6AM and its 5PM now. What's going on?
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I've never had a video take so long to publish. 18 hours and still didnt finish. Re-upload has started but a 12 minute video taking this long is still problematic.
End of conversation
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