Differences

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

--- ubuntu:video:ffmpeg:hardware_acceleration_using_gpu:amd_gpu:benchmark [2023/06/13 09:44] – peter
+++ ubuntu:video:ffmpeg:hardware_acceleration_using_gpu:amd_gpu:benchmark [2023/06/13 10:23] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - Video - ffmpeg - Hardware Acceleration using GPU - AMD GPU - Benchmark ======
-<code bash>
-ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i a.mp4 -c:v hevc_vaapi -q:v 28 -f null - -benchmark
-</code>
-returns:
-<code bash>
-...
-bench: utime=0.156s stime=0.195s rtime=3.003s
-bench: maxrss=358944kB
-</code>
-<WRAP info>
-**NOTE:**  The **maxrss** serves to indicate the maximum RAM used during the ffmpeg execution.
-  * **utime**: user time.
-    * utime is the sum of processing time across all threads. Since they may operate in parallel, utime can exceed rtime.
-  * **stime**: system time.
-  * **rtime**: real time.
-The following parts of the command force a null file and tells ffmpeg to benchmark. <code bash>
--f null - -benchmark</code>
-</WRAP>