Shorts algorithm tanked after switching to 4K – is it a coincidence?

Interesting timing – I actually read a tweet from a YouTube engineer about this a while back. They said that Shorts are processed as separate renditions, and the algorithm primarily uses the 1080p version for analysis. Uploading in 4K doesn't directly hurt you, but it can delay the processing time. If your video is stuck in 'processing' for a few hours, the algorithm might treat it as 'fresh' for a shorter window, which could hurt initial traction. I'd suggest sticking to 1080p (1080x1920) for Shorts to ensure faster processing and less chance of glitches. Also, check your file size – anything over 50MB might take longer to process. Try uploading a 1080p Short and see if your views bounce back.

That's a good point, but I've also seen cases where 4K Shorts actually perform better because they get a '4K' label in the quality selector, which might increase click-through from viewers who care about quality. However, the drop you're seeing is massive – not just a small dip. Could it be a content issue? Did you change your editing style or the hook in the first second? I've had videos that performed poorly because my intro was 0.5 seconds longer than usual. Also, check if your video is being flagged as 'reused content' – sometimes high-resolution upscales can trigger that if you're using stock footage. Try downloading the video from YouTube Studio and re-uploading it in 1080p to see if that changes anything.

I had a similar thing happen when I switched to 4K on my iPhone. My views didn't tank as hard, but they definitely dropped. I did some digging and found that the Shorts algorithm doesn't care about resolution – it's all about retention and watch time. But here's the catch: if your 4K file is larger, it might be taking longer to buffer on slower connections, causing viewers to swipe away before the video even loads. That would kill your retention rate, and the algorithm would stop recommending it. I recommend uploading in 1080p but with a high bitrate (e.g., 10-12 Mbps) to keep quality high without the huge file size. Also, make sure your video is under 60 seconds – I know Shorts now allow 3 minutes, but the algorithm still favors sub-60-second videos for the main feed.

Thanks everyone for the insights! I think the processing delay and buffer issue make a lot of sense. I'll try uploading my next few Shorts in 1080p (1080x1920, 10 Mbps) and see if that helps. I'll also check my retention graph to see if there's a spike in swipes away in the first 3 seconds. I'll report back in a week to let you know if it worked. Appreciate the help!