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--- ubuntu:video:convert_h264_to_h265 [2023/06/11 23:14] – peter
+++ ubuntu:video:convert_h264_to_h265 [2023/06/13 10:55] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - Video - Convert H264 to H265 ======
-===== Software Encoding =====
-<code bash>
-ffmpeg -i a.mp4 -c:v libx265 -map 0:v -c:a copy -map 0:a -c:s copy b.mkv
-</code>
-----
-===== Using GPU Hardware Encoding =====
-<code bash>
-ffmpeg -i a.mp4 -vaapi_device /dev/dri/renderD128 -vf format=nv12,hwupload -c:v hevc_vaapi -map 0:v:0 -map 0:a? -c:a copy -map 0:s? -c:s copy -rc_mode 1 -qp 25 -map_chapters 0 b.mkv
-ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i a.mp4 -c:v hevc_vaapi -map 0:v:0 -map 0:a? -c:a copy -map 0:s? -c:s copy -b:a 320k -global_quality 25 k.mkv
-ffmpeg -init_hw_device vaapi=amd:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device amd -filter_hw_device amd -i a.mp4 -vf 'format=nv12|vaapi,hwupload' -y -c:v hevc_vaapi -map 0:v:0 -map 0:a? -c:a copy -map 0:s? -c:s copy -qp:v 28 b.mkv
-ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i a.mp4 -c:v hevc_vaapi b.mkv
-ffmpeg -threads 16 -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i a.mp4 -c:v hevc_vaapi c.mkv
-</code>
-<WRAP info>
-**NOTE:** These allow the GPU to be used:
-<code bash>
--hwaccel vaapi -hwaccel_output_format vaapi -vaapi_device /dev/dri/renderD128
-</code>
-----
-==== Encoding formats ====
-Try replacing scale with scale_vaapi and replace -c:v h264 with -c:v: h264_vaapi
-The supported encoders are:
-|H.262 / MPEG-2 part 2|mpeg2_vaapi|
-|H.264 / MPEG-4 part 10 (AVC)|h264_vaapi|
-|H.265 / MPEG-H part 2 (HEVC)|hevc_vaapi|
-|MJPEG / JPEG|mjpeg_vaapi|
-|VP8|vp8_vaapi|
-|VP9|vp9_vaapi|
-</WRAP>
-----
-<code bash>
-ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i input.mp4 -c:v hevc_vaapi -b:v 0.589M output.mp4
-</code>
-<WRAP info>
-**NOTE:**  I had to set the bitrate smaller because the transcoded one was even bigger than the original file.
-  * You can change bitrate at 0.589M
-    * 0.589M is 0.589 Megabytes.
-  * Change it accordingly to your desired bitrate. I will use 2x - 3x smaller than the orginal. In this example h.264 to hevc.
-</WRAP>