Differences

This shows you the differences between two versions of the page.

--- ffmpeg:conversions:convert_h264_to_av1:libaom:two-pass [2023/06/15 08:05] – peter
+++ ffmpeg:conversions:convert_h264_to_av1:libaom:two-pass [2023/06/15 17:43] (current) – peter
@@ Line 11: / Line 11: @@
 <code bash>
-time ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2M -pass 1 -an -f null /dev/null && ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2M -pass 2 -c:a libopus -f mp4 out.mp4
+time ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2M -pass 1 -an -f null /dev/null && time ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2M -pass 2 -c:a libopus -f mp4 out.mp4
+time ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2000k -pass 1 -an -f null /dev/null && time ffmpeg -i a.mp4 -c:v libaom-av1 -b:v 2000k -pass 2 -ac 2 -c:a libopus  -f mp4 out.mp4x
 </code>
@@ Line 18: / Line 20: @@
 <code bash>
 ...
-real	235m34.669s
+real	98m40.037s
-user	1366m50.037s
+user	567m32.622s
-sys	0m45.396s
+sys	0m26.253s
 </code>
@@ Line 27: / Line 29: @@
   * Input test size:  75.5M
-  * Output test size:  21.1M
+  * Output test size:  4.2M
 </WRAP>
@@ Line 33: / Line 35: @@
 <WRAP info>
 **NOTE:**  The bitrate limit by the **-b:v** where the bitrate MUST be non-zero.
+  * **Opus** is a totally open, royalty-free, highly versatile audio codec.
 </WRAP>