FFmpeg - Encode VP9 - Revision history

Dex at 15:55, 14 March 2026

2026-03-14T15:55:09Z

@@ Line 1: / Line 1: @@
 [[Category:FFmpeg]]
 [[Category:VP9]]
-Two-pass is the recommended encoding method for libvpx-vp9 as some quality-enhancing encoder features are only available in 2-pass mode.<br/>
+VP9 is Google’s open, royalty‑free video codec designed to deliver high compression efficiency and excellent visual quality at lower bitrates. When encoding VP9 with FFmpeg’s libvpx-vp9 encoder, two-pass encoding is generally recommended. Some of VP9’s quality‑enhancing features are only available in multi-pass mode, and two-pass encoding allows the encoder to make better bitrate allocation decisions across the entire file.
-Constant quality 2-pass is invoked by setting <code>-b:v</code> to <code>zero</code> and specifying a quality level using the <code>-crf</code> switch:<br/>
 <pre>
-ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null && \
+ffmpeg -i input.file -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null && ffmpeg -i input.file -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -c:a libopus output.webm
 </pre>
-Note: Windows users should use <code>NUL</code> instead of <code>/dev/null</code> and <code>^</code> instead of <code>\</code>.<br/>
-Reference: [[https://trac.ffmpeg.org/wiki/Encode/VP9 FFmpeg: FFmpeg and VP9 Encoding Guide]]
+=== Windows ===

Knowledgebaseadmin: Knowledgebaseadmin moved page FFmpeg - VP9 to FFmpeg - Encode VP9

2025-03-06T14:19:20Z

Knowledgebaseadmin moved page FFmpeg - VP9 to FFmpeg - Encode VP9

← Older revision		Revision as of 14:19, 6 March 2025
(No difference)

Knowledgebaseadmin at 13:36, 6 March 2025

2025-03-06T13:36:55Z

← Older revision		Revision as of 13:36, 6 March 2025
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	ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -c:a libopus <output.file>		ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -c:a libopus <output.file>
	</pre>		</pre>
	Note: Windows users should use <code>NUL</code> instead of <code>/dev/null</code> and <code>^</code> instead of <code>\</code>.		Note: Windows users should use <code>NUL</code> instead of <code>/dev/null</code> and <code>^</code> instead of <code>\</code>.<br/>
	Reference: [[https://trac.ffmpeg.org/wiki/Encode/VP9 FFmpeg: FFmpeg and VP9 Encoding Guide]]		Reference: [[https://trac.ffmpeg.org/wiki/Encode/VP9 FFmpeg: FFmpeg and VP9 Encoding Guide]]

Knowledgebaseadmin: Created page with "Category:FFmpeg Category:VP9 Two-pass is the recommended encoding method for libvpx-vp9 as some quality-enhancing encoder features are only available in 2-pass mode.
Constant quality 2-pass is invoked by setting -b:v to zero and specifying a quality level using the -crf switch:

 ffmpeg -i  -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null && \ ffmpeg -i  -c:v libvpx-vp9 -b:v..."

2025-03-06T13:36:37Z

Created page with "Category:FFmpeg Category:VP9 Two-pass is the recommended encoding method for libvpx-vp9 as some quality-enhancing encoder features are only available in 2-pass mode.<br/> Constant quality 2-pass is invoked by setting <code>-b:v</code> to <code>zero</code> and specifying a quality level using the <code>-crf</code> switch:<br/> <pre> ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null && \ ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v..."

New page

[[Category:FFmpeg]]
[[Category:VP9]]
Two-pass is the recommended encoding method for libvpx-vp9 as some quality-enhancing encoder features are only available in 2-pass mode.<br/>
Constant quality 2-pass is invoked by setting <code>-b:v</code> to <code>zero</code> and specifying a quality level using the <code>-crf</code> switch:<br/>
<pre>
ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null /dev/null && \
ffmpeg -i <input.file> -c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -c:a libopus <output.file>
</pre>
Note: Windows users should use <code>NUL</code> instead of <code>/dev/null</code> and <code>^</code> instead of <code>\</code>.
Reference: [[https://trac.ffmpeg.org/wiki/Encode/VP9 FFmpeg: FFmpeg and VP9 Encoding Guide]]