Differences

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--- products:sbc:vim4:applications:hardware-decoding [2022/07/13 05:38]
nick
+++ products:sbc:vim4:applications:hardware-decoding [2023/10/19 05:55]
jacobe old revision restored (2023/09/25 04:58)
@@ Line 1: / Line 1: @@
+~~tag>VIM4 decoding~~
 ====== VIM4 Hardware Decoding ======
+===== Introduction =====
+This page introduces how to use hardware decoding.
+<WRAP important >
+Only supoport Amlgoic 5.4 Kernel.
+</WRAP>
+===== H264 Hardware Decoding  =====
+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
+```
+===== H265 Hardware Decoding  =====
+Here is an example to decode H265 file to NV12 and then encode to H265.
+Decoding & encoding:
+```shell
+gst-launch-1.0 filesrc location=/home/khadas/4K_6.1_2012.mkv ! matroskademux name=demux demux. ! h265parse ! v4l2h265dec ! video/x-raw,format=NV12 ! amlvenc ! h265parse ! filesink location=/home/khadas/h265dec.h265
+```
+===== MJPEG Hardware Decoding  =====
+An 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
+```

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