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--- products:sbc:vim4:applications:hardware-encoding [2022/06/30 02:30]
nick created
+++ products:sbc:vim4:applications:hardware-encoding [2024/04/21 21:36] (current)
nick [Library Source Code]
@@ Line 1: / Line 1: @@
-====== Hardware Encoding ======
+~~tag>VIM4 encoding~~
+====== VIM4 Hardware Encoding ======
+===== Introduction =====
+This page introduces how to use hardware encoding on VIM4.
+<WRAP important >
+Only supoport Amlgoic 5.4/5.15 Kernel.
+</WRAP>
+===== Encoding with Amlogic Library =====
+==== H264 Hardware Encoding ====
+<tabbox VIM4>
+```shell
+aml_enc_test 1080p.nv12 dump.h264 1920 1080 30 30 6000000 100 1 0 2 4
+```
+<tabbox VIM3/3L>
+```shell
+amvenc_test 1080p.nv12 dump.h264 1920 1080 30 30 6000000 100 1 0 2 4
+```
+</tabbox>
+The encoded file is ''dump.h264''.
+==== H265 Hardware Encoding ====
+<tabbox VIM4>
+```shell
+aml_enc_test 1080p.nv12 dump.h265 1920 1080 30 30 6000000 100 1 0 2 5
+```
+<tabbox VIM3/3L>
+```shell
+amvenc_test 1080p.nv12 dump.h265 1920 1080 30 30 6000000 100 1 0 2 5
+```
+</tabbox>
+The encoded file is ''dump.h265''.
+==== JPEG Hardware Encoding ====
+```shell
+jpeg_enc_test 1080p.nv12 dump.jpg 1920 1080 100 3 0 8 8 0
+```
+The encoded file is ''dump.jpg''.
+===== Encoding with Gstreamer =====
+==== Install Gstreamer Encoder Plugins ====
+You need to install the gstreamer encoder plugins:
+```shell
+sudo apt update
+sudo apt install gstreamer-aml
+```
+Check the gstreamer encoder plugins:
+```shell
+$ gst-inspect-1.0 | grep aml
+amljpegenc:  amljpegenc: Amlogic JPEG image encoder
+amlvenc:  amlvenc: Amlogic h264/h265 Multi-Encoder```
+  * ''amlvenc'' is the gstreamer hardware encoder plugin for ''H264''/''H265''.
+  * ''amljpegenc'' is the gstreamer hardware encoder plugin for ''jpeg''.
+==== H264 Hardware Encoding  ====
+Here is an example to decode H264 file to NV12 and then encode to H264.
+Decoding & encoding:
+```shell
+gst-launch-1.0 filesrc location=/home/khadas/bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux name=d d.video_0 ! h264parse ! v4l2h264dec ! video/x-raw,format=NV12 ! amlvenc ! h264parse ! filesink location=/home/khadas/h264dec.h264
+```
+Another example to decode video from USB camera and encode to H264:
+```shell
+gst-launch-1.0 v4l2src device=/dev/video0 io-mode=mmap num-buffers=300 ! image/jpeg,width=1920,height=1080,framerate=30/1 ! jpegdec ! amlvenc ! h264parse ! filesink location=test_0.h264
+```
+==== H265 Hardware Encoding  ====
+Here is an example to decode H264 file to NV12 and then encode to H265.
+Decoding & encoding:
+```shell
+gst-launch-1.0 filesrc location=/home/khadas/bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux name=d d.video_0 ! h264parse ! v4l2h264dec ! video/x-raw,format=NV12 ! amlvenc ! h265parse ! filesink location=/home/khadas/h264dec.h265
+```
+Another example to decode video from USB camera and encode to H265:
+```shell
+gst-launch-1.0 v4l2src device=/dev/video0 io-mode=mmap num-buffers=300 ! image/jpeg,width=1920,height=1080,framerate=30/1 ! jpegdec ! amlvenc ! h265parse ! filesink location=test_0.h265
+```
+==== JPEG Hardware Encoding  ====
+Read one frame YUY2 format data from USB camera and encode to jpeg file.
+```shell
+gst-launch-1.0 -v v4l2src device=/dev/video0 io-mode=mmap num-buffers=1 ! video/x-raw,format=YUY2,width=640,height=480 ! amljpegenc ! filesink location=1.jpg
+```
+===== Library Source Code =====
+  * VIM4 H264/H265 [[gh>numbqq/encoder_libs_aml/tree/yocto-202311/multiEnc | Library Source Code of H264/H265 ]], check REDME to build.
+  * VIM3/3L [[gh>numbqq/encoder_libs_aml/tree/yocto-202311/amvenc_264| H264 Library Source Code]] / [[gh>numbqq/encoder_libs_aml/tree/yocto-202311/amvenc_265| H265 Library Source Code]], check REDME to build.
+  * JPEG [[gh>numbqq/encoder_libs_aml/tree/yocto-202311/jpeg | Library Source Code of JPEG]], check REDME to build.

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