# 8-bit vs 10-bit YouTube Footage for Editing

Source: https://b-roll-6hk.pages.dev/formats/8-bit-vs-10-bit-youtube-footage/
Published: 2026-09-25
Updated: 2026-09-25
Author: Ema Zamboni, video editor (https://b-roll-6hk.pages.dev/about/)
Section: Formats (https://b-roll-6hk.pages.dev/formats/)

**In short:** YouTube streams SDR video in 8-bit and only HDR video in 10-bit, and converting an 8-bit stream to a 10-bit codec cannot add color depth it never had. A 10-bit intermediate still limits new banding when you grade and render again. B-ROLL's ProRes is always 10-bit 4:2:2; its DNxHR is 8-bit except HQX for 10-bit sources.

## What is the difference between 8-bit and 10-bit video?

Bit depth is the number of bits a video file uses to store each color sample. An 8-bit file has 256 levels per channel (2^8 = 256), and a 10-bit file has 1,024 (2^10 = 1,024), so each step between two shades is four times finer.

Those levels multiply across the three channels. An 8-bit picture can describe 16.7 million colors (256 x 256 x 256 = 16,777,216), a 10-bit picture 1.07 billion (1,024 x 1,024 x 1,024 = 1,073,741,824). On a clear sky, a studio wall or a slow fade, too few levels show up as visible stripes: banding.

The 8-bit vs 10-bit comparison table sets out what each depth means for downloaded footage.

| Property | 8-bit | 10-bit |
| --- | --- | --- |
| Levels per channel | 256 (2^8) | 1,024 (2^10) |
| Possible colors | 16.7 million (256^3) | 1.07 billion (1,024^3) |
| YouTube streams in this depth | SDR video | HDR video |
| B-ROLL outputs in this depth | DNxHR LB, SQ and HQ | Every ProRes tier, DNxHR HQX |
| Grading headroom | Often bands under strong curves | Keeps finer in-between values of a grade |

Chroma subsampling is the second number to know. A 4:2:0 file stores one color sample per block of four pixels, and 4:2:2 stores one per pair. Bit depth and chroma are separate: a file can be 10-bit 4:2:0, like many HDR streams, or 8-bit 4:2:2, like DNxHR SQ.

[Download B-ROLL for Windows](https://b-roll-6hk.pages.dev/download/): free, Windows 10 and 11 today, macOS and Linux planned. No account, no ads.

## Is YouTube footage 8-bit or 10-bit?

As of September 2026, YouTube streams SDR video in 8-bit 4:2:0 and only HDR video in 10-bit. Most uploads are SDR, so most downloads are 8-bit, whatever the codec or resolution.

HDR is where 10-bit comes from. YouTube's [HDR upload requirements](https://support.google.com/youtube/answer/7126552) ask for a color depth of 10 or 12 bits, and the same page says YouTube also makes an SDR downconversion for devices without HDR. So one HDR upload exists on YouTube as a 10-bit HDR stream and as a separate SDR stream.

Which one you get matters for the edit. By default yt-dlp prefers HDR streams, and B-ROLL applies no tone mapping, so an HDR video arrives as HDR (yt-dlp behavior, not a B-ROLL setting). Your timeline then needs color management that handles the HDR transfer, or the picture looks flat and gray. The codecs that carry these streams, and why they decode slowly, are covered in [YouTube codecs explained: H.264 vs VP9 vs AV1](https://b-roll-6hk.pages.dev/formats/youtube-codecs-h264-vp9-av1/).

## Does converting 8-bit footage to 10-bit add quality?

No. Converting an 8-bit YouTube stream to a 10-bit codec cannot add color depth the stream never had.

The arithmetic shows why. Each 8-bit value lands on one 10-bit value, four codes apart (8-bit level 128 becomes 10-bit level 512, because 128 x 4 = 512). The three codes between neighbors stay empty, since the source never recorded those shades. A band that sits in the stream is still there in the 10-bit file, at a larger file size.

Chroma works the same way. Converting a 4:2:0 stream to 4:2:2 doubles the stored color samples, but the new ones are interpolated from their neighbors, not recovered from the camera. The picture you cut with is the picture YouTube delivered.

What the conversion does change is playback: an intraframe file decodes one frame at a time. Which format to pick for that is covered in [best format to download YouTube videos for editing](https://b-roll-6hk.pages.dev/formats/best-format-for-editing-youtube/).

## When does a 10-bit intermediate still help?

A 10-bit intermediate helps when you render new pixels into it: graded shots, composites, titles and round trips between apps. A grade creates in-between values that an 8-bit file would round to the nearest of its 256 levels, and a 10-bit file keeps four times finer steps.

The typical cases are concrete:

- You grade a shot, render it to an intermediate and grade it again later.
- You send a clip to After Effects for a composite or a title and bring the render back.
- You add soft gradients, glows or vignettes on top of 8-bit footage.
- You work with an HDR download, which is 10-bit at the source.

A 10-bit intermediate does not help in three places. A band baked into the YouTube stream stays. A heavy secondary on an 8-bit source can still band, because the source steps are wide. And YouTube re-encodes an SDR upload into its own 8-bit streams, so the headroom protects your renders, not the viewer's copy.

For straight cutting of 8-bit b-roll, an 8-bit intermediate already matches the precision of the stream. Apple describes ProRes 422 HQ as holding 10-bit 4:2:2 sources [visually lossless through many generations](https://www.apple.com/final-cut-pro/docs/Apple_ProRes.pdf) of decoding and encoding, which is the case for repeated renders. The lighter ProRes tiers and their data rates are compared in [ProRes Proxy vs LT vs 422 vs HQ: which to use](https://b-roll-6hk.pages.dev/formats/prores-proxy-lt-422-hq/).

## Which bit depth does B-ROLL write for ProRes and DNxHR?

B-ROLL writes every ProRes tier at 10-bit 4:2:2, and every DNxHR tier at 8-bit 4:2:2 except HQX, which is 10-bit and used only for 10-bit sources. B-ROLL checks the source bit depth for one decision: whether DNx gets HQX.

The B-ROLL output table lists the bit depth, chroma and trigger of each format option.

| Format option | Tier | Bit depth | Chroma | When B-ROLL uses it |
| --- | --- | --- | --- | --- |
| ProRes | Proxy, LT, 422 or HQ | 10-bit | 4:2:2 | Every source; the tier follows bitrate, frame size and frame rate |
| DNx | DNxHR LB, SQ or HQ | 8-bit | 4:2:2 | 8-bit sources; the lightest tier that preserves the stream |
| DNx | DNxHR HQX | 10-bit | 4:2:2 | 10-bit sources only, at any bitrate |
| DNx | DNxHR SQ (fallback) | 8-bit | 4:2:2 | Only when the HQX conversion fails |
| MP4, MKV, WEBM | Not applicable | Same as the stream | Same as the stream | Not converted; YouTube's own codec stays |

Pick **ProRes** when you plan to grade hard, composite or render shots back, because every tier keeps 10-bit headroom. Pick **DNx** for 8-bit footage you mostly cut, since the file stays 8-bit like its source, and for HDR sources, which get HQX automatically.

In both cases B-ROLL keeps the source resolution and frame rate and picks the lightest tier that still preserves the stream. How the four DNxHR tiers differ is in [DNxHR LB vs SQ vs HQ vs HQX: tiers explained](https://b-roll-6hk.pages.dev/formats/dnxhr-lb-sq-hq-hqx/), and the whole conversion is on [download YouTube videos in ProRes or DNxHR](https://b-roll-6hk.pages.dev/features/youtube-to-prores-dnxhr/).

## How do you check a file's bit depth?

The quickest check is the pixel format that ffmpeg reports: `yuv420p` means 8-bit 4:2:0, `yuv420p10le` means 10-bit 4:2:0, and `yuv422p10le` means 10-bit 4:2:2. Run ffmpeg with only an input file and read the video stream line.

```powershell
ffmpeg -hide_banner -i "clip.mkv"
```

ffmpeg prints the streams and then complains that no output file was given; that message is expected. An HDR download also shows a transfer such as `smpte2084` or `arib-std-b67` next to the pixel format, which tells you HDR color management is needed.

Before downloading, `yt-dlp -F` lists each format's codec string. For VP9 and AV1 the fourth field is the bit depth: `vp09.00.51.08` is an 8-bit stream, and an HDR string starts `vp09.02.51.10` for 10-bit. yt-dlp also flags HDR formats in its table.

During a ProRes or DNx conversion, B-ROLL writes the source bit depth and dimensions to its log, along with the tier it picked. The download card does not show bit depth. More codec and container explainers are collected in [codecs and formats for editing YouTube footage](https://b-roll-6hk.pages.dev/formats/).

## Frequently asked questions

Q: Is HDR on YouTube always 10-bit?
A: Yes. YouTube's HDR upload requirements ask for a color depth of 10 or 12 bits, and the HDR formats it streams carry 10-bit video. Every HDR video also gets an SDR downconversion for screens without HDR, so check which version you downloaded before you set up color management on your timeline.

Q: Why does my graded YouTube clip show banding?
A: Banding shows because an 8-bit stream has only 256 levels per channel. A strong grade on a sky or a soft gradient pulls those steps apart until you see them, and delivery compression adds blocky steps of its own. Gentler curves, a little film grain and 10-bit renders of graded shots limit the damage, but no setting restores levels the stream never carried.

Q: Does 4:2:2 chroma matter for YouTube footage?
A: Only for what you add in the edit. A YouTube stream is 4:2:0, with one color sample for every block of four pixels, and converting it to 4:2:2 fills the extra samples by interpolation instead of recovering detail. The 4:2:2 file does keep titles, graphics and keys that you render back into it sharper.

## Sources

1. [Apple ProRes white paper](https://www.apple.com/final-cut-pro/docs/Apple_ProRes.pdf)
2. [Apple Support: About Apple ProRes](https://support.apple.com/en-us/102207)
3. [YouTube Help: Upload High Dynamic Range (HDR) videos](https://support.google.com/youtube/answer/7126552)
4. [Avid Knowledge Base: DNxHR Codec Bandwidth Specifications](https://kb.avid.com/pkb/articles/en_US/White_Paper/DNxHR-Codec-Bandwidth-Specifications)
5. [ffmpeg codecs documentation](https://ffmpeg.org/ffmpeg-codecs.html)

---

B-ROLL is a free, donation-supported desktop YouTube downloader for video editors: it downloads videos, clips, playlists and channels, converts them automatically into edit-ready ProRes or DNxHR (or saves MP4, MKV, WEBM or audio), and includes built-in trimming, subtitles and automatic creator credit files. Part of [Codecs and Formats for Editing YouTube Footage](https://b-roll-6hk.pages.dev/formats/) on the B-ROLL website. Download B-ROLL, free for Windows 10 and 11 (macOS and Linux planned): https://b-roll-6hk.pages.dev/download/