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--- ffmpeg:conversions:convert_h264_to_av1:libaom:a_minimum_and_maximum_bitrate [2023/06/14 17:02] – created peter
+++ ffmpeg:conversions:convert_h264_to_av1:libaom:a_minimum_and_maximum_bitrate [2023/06/14 19:07] (current) – peter
@@ Line 1: / Line 1: @@
 ====== ffmpeg - Conversions - Convert H264 to AV1 - libaom - A minimum and maximum bitrate ======
+**libaom-av1** allows a minimum and maximum bitrate can be specified, instead of a quality target.
+  * This method is useful for bulk encoding videos in a generally consistent fashion.
+<WRAP info>
+**NOTE:**  When muxing into MP4, you may want to add **-movflags +faststart** to the output parameters if the intended use for the resulting file is streaming.
+</WRAP>
+----
+<code bash>
+time ffmpeg -i a.mp4 -c:v libaom-av1 -minrate 500k -b:v 2000k -maxrate 2500k -f mp4 out.mp4
+</code>
+returns:
+<code bash>
+...
+real	107m58.989s
+user	618m30.322s
+sys	0m32.327s
+</code>
+<WRAP info>
+**NOTE:**
+  * Input test size:  75.5M
+  * Output test size:  4.9M
+</WRAP>
+<WRAP info>
+**NOTE:**  The bitrate limit by the **-b:v** where the bitrate MUST be non-zero.
+</WRAP>