Platform recompression
Also known as: upload compression, social media compression, re-encoding on upload
The re-encoding every video platform applies to uploads, lowering bitrate to save bandwidth, which can make detailed action footage look blocky.
Updated
What it means
No platform streams your file as uploaded. YouTube, Instagram, TikTok and others re-encode every upload into their own formats and bitrates, often several versions for different screens and connections. This recompression saves bandwidth, but it also removes detail.
Action footage suffers more than most. Water spray, snow, trees, gravel and fast camera motion are hard to compress, because every frame changes a lot. At low bitrates the platform's encoder smears fine detail and creates blocks, see compression artifacts. The better your upload, the more detail survives the second round of compression, and higher-resolution uploads often get better codecs and bitrates.
How it works in practice
Upload the best file you have: a high-bitrate master rather than a copy already squeezed by a messaging app. A 4K upload to YouTube often looks better even on a 1080p screen, because YouTube uses a better encoding pipeline for higher resolutions.
Avoid exporting at very low bitrates to save upload time. A short highlight at a generous bitrate gives the platform clean material to work with.
Phone apps usually have a setting for high-quality uploads; turn it on. Send files to friends by link or file transfer rather than through chat apps, which recompress aggressively and often cap resolution as well.
What to watch out for
Every download and re-upload adds another round of compression. A clip that goes from TikTok to Instagram to WhatsApp degrades each time; keep the original and export fresh copies.
Dark scenes and gradients suffer from banding after recompression. Slightly brighter exposure and a touch of grain can help.
New uploads may look poor for the first minutes or hours, while the platform processes higher-quality versions. Check again later before you re-upload in frustration. Some platforms also cap resolution in their apps; that is a playback limit, not a fault in your file.
How RawClip handles it
RawClip delivers the finished highlight in 4K and 1080p MP4 via a private download link. Upload the 4K file to YouTube for the best quality after recompression, and use the 1080p version where a smaller file is handy.