# Premiere Pro VP09 Not Compatible: Fix for YouTube Files

Source: https://b-roll-6hk.pages.dev/troubleshooting/premiere-pro-vp09-unsupported/
Published: 2026-09-25
Updated: 2026-09-25
Author: Ema Zamboni, video editor (https://b-roll-6hk.pages.dev/about/)
Section: Troubleshooting (https://b-roll-6hk.pages.dev/troubleshooting/)

**In short:** Premiere Pro's VP09 error happens because the video stream inside the file is VP9, a codec Premiere does not import natively, even in an MP4. Renaming or rewrapping the file does not help. The dependable fix is a ProRes or DNxHR .mov, which B-ROLL converts each YouTube download to automatically.

## What does "unsupported compression type VP09" mean?

Premiere's VP09 error means the file uses the VP9 codec, which Premiere does not import natively. VP09 is not a file type: `vp09` is the four-character code that labels a VP9 video track inside an MP4, as defined in the [VP Codec ISO Media File Format Binding](https://www.webmproject.org/vp9/mp4/).

VP9 is the [WebM Project's open video codec](https://www.webmproject.org/vp9/), and YouTube uses it for delivery. Premiere Pro reads the MP4 container and the `vp09` track label, but VP9 is missing from the formats [Adobe lists for Premiere Pro](https://helpx.adobe.com/premiere-pro/using/supported-file-formats.html), so the import stops there.

Premiere import errors on YouTube files come in a few wordings. The table pairs each message with what is inside the file and the fix.

| What Premiere shows | File you imported | What is inside | Fix |
| --- | --- | --- | --- |
| An unsupported compression type, naming VP09 | .mp4 | VP9 video (`vp09`), usually Opus audio | ProRes or DNxHR .mov |
| An unsupported compression type, naming av01, or "Codec missing or unavailable" | .mp4 | AV1 video (`av01`) | ProRes or DNxHR .mov |
| "File format not supported" | .webm | VP9 or AV1 video with Opus audio in a WebM container | ProRes or DNxHR .mov |
| "File format not supported" | .mkv | YouTube's streams in a Matroska container | ProRes or DNxHR .mov |
| Picture imports, audio track missing | .mp4 or .mkv | Opus audio, which Adobe does not list | ProRes or DNxHR .mov with 16-bit PCM audio |

> **Careful:** Download only footage you have the right to use: your own uploads, Creative Commons, licensed or permitted material.

[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.

## Why do YouTube files trigger the VP09 error in Premiere?

YouTube files trigger the VP09 error because YouTube delivers video in VP9 and AV1 as well as H.264. As of September 2026, a download of YouTube's best streams usually holds VP9 or AV1 video with Opus audio.

The file extension hides that. A downloader merges the video and audio streams into whatever container you chose without re-encoding them, so an .mp4 can carry VP9 just as a .webm does. Which codec a given video gets depends on the video and its resolution, as [YouTube codecs explained: H.264 vs VP9 vs AV1](https://b-roll-6hk.pages.dev/formats/youtube-codecs-h264-vp9-av1/) lays out.

B-ROLL has no codec setting: its MP4, MKV and WEBM keep the codec of the streams yt-dlp picks. Renaming a .webm to .mp4, or rewrapping it without re-encoding, changes the box and leaves the VP9 inside, which is why the container swap alone never fixes the error. How the four containers behave in an editor is compared in [MOV vs MP4 vs MKV vs WEBM for video editing](https://b-roll-6hk.pages.dev/formats/mov-mp4-mkv-webm-editing/).

Premiere is not alone: on Ema Zamboni's own DaVinci Resolve timeline, AV1 or VP9 downloads crashed Resolve at times, the problem B-ROLL's automatic conversion was built to solve.

## What is the quickest fix for the VP09 error?

The quickest fix for the VP09 error is to replace the file with a ProRes or DNxHR .mov, a codec pair that Premiere Pro imports natively on Windows. You get one either by downloading the video again with B-ROLL's **ProRes** or **DNx** format, or by converting the file you already have.

**Download it again with B-ROLL.** Switch **Format** to **ProRes** or **DNx** and click **↻** on the finished card: B-ROLL downloads the video again with the current settings, then converts it to a .mov. [Download YouTube videos in ProRes or DNxHR](https://b-roll-6hk.pages.dev/features/youtube-to-prores-dnxhr/) explains the tier B-ROLL picks.

**Convert the file you have.** When the link is gone, convert the VP9 file with ffmpeg, the same tool B-ROLL runs for its own conversions. The command writes a DNxHR SQ .mov with uncompressed audio:

```powershell
ffmpeg -i "clip.mp4" -c:v dnxhd -profile:v dnxhr_sq -pix_fmt yuv422p -c:a pcm_s16le "clip_dnxhr.mov"
```

A conversion decodes VP9 and encodes a new picture, so it adds a generation of compression. Converting once, straight after the download, keeps it to that single step.

> **Tip: Clip already on the timeline**
>
> When a clip imported without sound, select it in the Project panel, choose **Replace Footage** from the **Clip** menu and pick the new .mov. Edits that used the old clip follow the replacement.

## How do you check a YouTube file's codec before importing it into Premiere?

Check a YouTube file's codec by reading its stream line with ffmpeg: Windows file properties do not show it, and B-ROLL's cards show bitrate and resolution only. The line names the codec and its four-character code.

```powershell
ffmpeg -hide_banner -i "clip.mp4"
```

ffmpeg lists each stream, then ends with a harmless note that no output file was given. For a VP9 file the video line contains `Video: vp9` and `(vp09 / 0x39307076)`, and the audio line contains `Audio: opus`. The `vp09` in that line is the same label Premiere reports. An `avc1` or `h264` video line with `aac` audio is a file Premiere Pro can usually open as it is.

B-ROLL installs its own `ffmpeg.exe` in `%LOCALAPPDATA%\Broll`. Run the command from that folder, or with the full path, when ffmpeg is not on your PATH.

## Which B-ROLL settings avoid the VP09 error?

The B-ROLL setting that avoids the VP09 error is **Format**: choose **ProRes** or **DNx**, never **MP4**, **MKV** or **WEBM**, for anything that goes into Premiere Pro. B-ROLL's MP4 can contain VP9, so only the converted .mov is a safe import.

With **ProRes** or **DNx** selected, B-ROLL merges the best streams into an MKV master, converts it with ffmpeg into a .mov with the same name, and deletes the master when the conversion succeeds. The .mov keeps the source resolution and frame rate and carries 16-bit PCM audio, so the Opus problem disappears along with the VP9 one.

Two more settings save time. **Quality** caps the height (**Best**, **4K**, **1080p**, **720p**, **480p**), so match it to your sequence. **Only a part: ask me which each time** in **Advanced options** downloads just the range you mark, and the conversion then runs on seconds instead of a whole video. Different settings count as a new download, so switching the format never stops at the **Already downloaded** dialog.

The full Premiere workflow, from the format choice to the sequence settings, is in [download YouTube videos for Premiere Pro and After Effects](https://b-roll-6hk.pages.dev/guides/download-youtube-for-premiere-pro/).

## Why does an MKV import without audio in Premiere?

An MKV from YouTube imports without audio because its sound is Opus, an audio codec missing from Adobe's list for Premiere Pro. Matroska is not on that list either, so Premiere Pro handles an MKV only partly, if at all.

YouTube pairs VP9 and AV1 video with Opus audio in most of its streams, and B-ROLL's MKV keeps both as they are. The same happens with an MP4 whose video Premiere can decode but whose audio is Opus: the picture arrives, the audio track does not.

Rewrapping the MKV as an MP4 leaves the Opus stream untouched and gives the same silent clip. A ProRes or DNxHR .mov from B-ROLL carries uncompressed 16-bit PCM audio instead. If the same YouTube file also fails in DaVinci Resolve, [DaVinci Resolve media offline on a YouTube video](https://b-roll-6hk.pages.dev/troubleshooting/resolve-media-offline-youtube/) covers the Resolve side, and every other download and import error is collected in [YouTube downloader not working? Fixes for editors](https://b-roll-6hk.pages.dev/troubleshooting/).

## How to replace a VP09 file with a ProRes or DNxHR .mov in B-ROLL

1. **Switch the format.** With the Video / Audio switch on Video, open B-ROLL's Format menu and pick ProRes or DNx instead of MP4, MKV or WEBM.
2. **Download the video again.** Click ↻ on the finished card of the file Premiere rejected, which downloads it again with the current settings, or paste the watch link again and press Paste & Download.
3. **Wait for the conversion.** Watch the card state change from downloading to 'to convert', 'converting…' and 'done'. A .mov named after the video remains, and the MKV master is deleted after a successful conversion.
4. **Import the .mov into Premiere Pro.** In Premiere Pro, press Ctrl+I, select the .mov from your B-ROLL download folder and click Open. The clip appears in the Project panel with picture and sound.

## Frequently asked questions

Q: Can a plugin make Premiere read VP9?
A: Only when you install a third-party importer plugin, because Adobe's supported-format list for Premiere Pro does not include VP9 or WebM. Such plugins come from other developers, can stop working after a Premiere update, and still leave you editing a long-GOP stream that decodes slowly. A ProRes or DNxHR .mov imports with no plugin and scrubs frame by frame.

Q: Why does After Effects reject the same file?
A: After Effects rejects a YouTube VP9 file for the same reason Premiere Pro does: VP9 is missing from Adobe's format list. The After Effects list names QuickTime, MPEG-4 and MXF containers, but not VP9, AV1, WebM or Matroska. The ProRes or DNxHR .mov that fixes Premiere also imports into After Effects, as shown in [download YouTube videos for Premiere Pro and After Effects](https://b-roll-6hk.pages.dev/guides/download-youtube-for-premiere-pro/).

Q: Is re-downloading better than converting?
A: Yes, when the video is still online and you have the right to use it. B-ROLL starts again from YouTube's streams, picks the ProRes or DNxHR tier for you, keeps resolution and frame rate, and can fetch only the part you need. Converting a file you already have is the fallback when the link is gone.

## Sources

1. [Adobe Help: Premiere Pro supported file formats](https://helpx.adobe.com/premiere-pro/using/supported-file-formats.html)
2. [WebM Project: VP9](https://www.webmproject.org/vp9/)
3. [WebM Project: VP Codec ISO Media File Format Binding](https://www.webmproject.org/vp9/mp4/)
4. [Adobe Help: After Effects supported file formats](https://helpx.adobe.com/after-effects/kb/supported-file-formats.html)

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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 [YouTube Downloader Not Working? Fixes for Editors](https://b-roll-6hk.pages.dev/troubleshooting/) 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/