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"How can I edit a 4k video in a 1080p timeline without losing quality?"

When editing 4K footage in a 1080p timeline, you can zoom and reframe up to 50% without losing image quality due to the extra resolution.

DaVinci Resolve can handle scaling for you when editing 4K footage in a 1080p timeline, with "Image Scaling" settings adjustable to "Scale Entire Image to Fit" or "Center Crop with No Resizing".

The same aspect ratio between 4K and 1080p resolutions (16:9) allows the 4K footage to fit smoothly into the 1080p timeline.

Although DaVinci Resolve allows downscaling 4K footage to 1080p without losing quality, rendering the 4K footage at 1080p output ensures the best quality.

If imported clips, like 4K UHD, do not match the timeline resolution, DaVinci Resolve handles this using the "Image Scaling" setting.

When changing timeline resolution from 4K UHD to 1080p in DaVinci Resolve before exporting, it ensures the original full resolution if your clips are in 4K.

When upscaling 1080p to 4K before uploading to YouTube, VP9 compression works better for the extra resolution.

Downscaling 4K to 1080p in DaVinci Resolve requires dragging and dropping 4K clips onto the 1080p timeline, setting "Image Scaling" to "Scale Full Frame with Crop," and then doing a 1080p export.

When editing and color correcting in 720p, changing the timeline resolution to 1080p before rendering out is necessary for the system to use the original clips' full resolution.

Scaling 4K footage to the HD timeline in Premiere Pro CC 2020 can be done by selecting all 4K source clips, then adjusting their scale in "Video Options" to match the HD timeline.

When using different footage sizes on the same timeline, it is useful to match the sequence settings to your main clip or ensure both are set to "Scale to Frame Size" under "Interpret Footage" settings.

Exporting 4K video from a 1080p timeline is possible; however, it is recommended to set the timeline to 4K before exporting or upscale the 1080p sequence to 4K using "Sequence Settings" before exporting for best results.

Upscale any video of any resolution to 4K with AI. (Get started for free)