Hosting
Upload high-quality and 4K video.
Without losing what you graded.
You can export a beautiful 4K file and still have viewers watch a soft one. The loss usually happens after the upload, when the site re-encodes your file into its own streaming copies. This guide explains what each step does to the picture, what survives, and how to upload so the least is lost.
Video hosting for filmmakers · 5 GB free · Paid plans from USD 9/month
By uncompressed.io · Updated October 2026
Short answer
How do I upload high-quality or 4K video without losing quality?
Most sites re-encode your upload, so the quality you keep depends on their copy, not your file: Vimeo caps 4K H.264 at 22 Mbps. Export at the site's recommended settings so its encoder starts clean, or upload to a host that streams the file without re-encoding, such as uncompressed.io, where a 4K export plays as exported.
- Most sites re-encode every upload into smaller copies
- Vimeo's 4K maximum is 22 Mbps (H.264)
- YouTube recommends 35-45 Mbps 4K uploads
- Export H.265 10-bit, constant frame rate
- On a non-re-encoding host, 40-80 Mbps for 4K
- uncompressed.io streams the file as exported
Why it happens
Your upload is not what plays
on almost every site
Video compression is the process of throwing away picture data the eye is least likely to miss. Your export does it once. Most sites do it again.
Step 1: your export
You choose the codec and bitrate. This is the last time you control the picture.
Step 2: the site's encoder
The site makes several copies at fixed resolutions and bitrate ceilings, for different screens and connections.
Step 3: the player picks
The viewer gets whichever copy their connection can sustain, often not the top one.
Each re-encode is a second round of compression applied to an already compressed file. Fine detail goes first: film grain, smoke, water, leaves, and the smooth gradients in skies and dark scenes, which break into bands or blocks. YouTube's guidance also notes it converts full colour range to limited range, which is why colours can look different after upload.
What survives
What the big sites keep
on their own figures
22 Mbps
Vimeo, 4K H.264 maximum
16 Mbps for 4K HDR or HEVC
7 Mbps
Vimeo, 1080p 60 fps maximum
H.264; 5 Mbps for HEVC 1080p
1920 x 1080
Google Drive playback maximum
any resolution accepted on upload
YouTube and Vimeo figures from their own help pages, read 12 October 2026. YouTube publishes recommended upload bitrates; Vimeo publishes playback maximums. uncompressed.io figures are export suggestions, not limits.
How to upload
Settings that lose the least
step by step
Finish at the right resolution
Export at the resolution you graded. Upscaling adds no detail that was not there.
Choose H.265 10-bit
H.265 Main10 in MP4 or MOV holds gradients far better than 8-bit H.264. Use H.264 where a site asks for it.
Constant frame rate, 2-pass VBR
Variable frame rate from phones and screen recorders causes stutter and sync drift after upload.
Pick the bitrate for the destination
On a re-encoding site, match its recommendation. On a host that streams the file, 40 to 80 Mbps for 4K and 16 to 32 Mbps for 1080p at 24 or 30 fps; up to about 120 Mbps for 6K to 8K.
Audio at AAC 320 kbps
Audio is re-encoded too on most sites; start from a clean, high-bitrate track.
Watch it back at full screen
Check the darkest and busiest shot before you share the link, after processing finishes.
A limit worth knowing
Where to upload
Pick the host for the viewer
by goal
For reach
YouTube. Upload at its recommended settings, accept the processing, and send people to a clean version for the full film.
For the picture
uncompressed.io. Upload the export and it streams as is, with no ads, no logo and privacy modes on every plan. Free presets for Resolve, Premiere, Media Encoder and Compressor are on the NLE tools page.
Questions
Frequently asked
How do I upload a video without losing quality?
Two ways. On a site that re-encodes (most do), export at or slightly above the site's recommended bitrate so its encoder starts from a clean file; extra bitrate beyond that is thrown away. Or upload to a host that streams the file without re-encoding, such as uncompressed.io, so the export you made is what plays.
What is the best bitrate to upload 4K video?
YouTube recommends 35-45 Mbps for 4K at 24, 25 or 30 fps and 53-68 Mbps at 48, 50 or 60 fps, in MP4 with H.264. For a host that does not re-encode, 40 to 80 Mbps in H.265 10-bit is a good range for 4K at 24 or 30 fps.
Why does my 4K video look blurry after uploading?
Because the site plays a re-encoded copy, often at a much lower bitrate than you exported. Vimeo's help center lists a 22 Mbps maximum for 4K H.264 and 16 Mbps for 4K HDR or HEVC. A site may also be playing a lower resolution while the 4K copy is still processing.
Does uploading in 4K improve quality on YouTube?
YouTube's guidance lists much higher recommended bitrates for 2160p uploads than for 1080p (35-45 Mbps against 8 Mbps at standard frame rates). It does not publish what it delivers, so compare your own upload at both resolutions on a large screen.
Can a host stream my file without re-encoding it?
Yes. uncompressed.io stores the uploaded file and streams it without an additional video or audio re-encode. It cannot restore detail lost at export, and playback needs a codec the viewer's device supports and a fast enough connection.
Should I upload ProRes?
Only to a host that can play it or for delivery as a download. Browsers play H.264, H.265 and AV1 far more widely. For streaming, export a high-bitrate H.265 10-bit file and keep the ProRes master for archive and delivery.
Upload a 4K export and watch it as exported.
No re-encode on any plan. Starter is free with 5 GB and one film at a time; paid plans: Lite USD 9, Pro USD 39, Max USD 99, Studio USD 219 a month.
Sources
- 1.YouTube recommended upload encoding settings (read 12 October 2026)
- 2.Guidelines for determining playback resolution, Vimeo help center (read 12 October 2026)
- 3.Play videos stored in Google Drive, Google Drive Help (read 12 October 2026)