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products:sbc:vim4:applications:hardware-decoding

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products:sbc:vim4:applications:hardware-decoding [2022/12/22 21:44]
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~~ ~~tag>VIM4 decoding~~
- 
 ====== VIM4 Hardware Decoding ====== ====== VIM4 Hardware Decoding ======
  
 ===== Introduction ===== ===== Introduction =====
  
-This page introduces how to use the hardware decoding on VIM4.+This page introduces how to use hardware decoding.
  
  
Line 15: Line 14:
 ===== H264 Hardware Decoding  ===== ===== H264 Hardware Decoding  =====
  
-Here is an example to decode H264 file to NV12 format file.+Here is an example to decode H264 file to NV12 and then encode to H264.
  
  
-```shell +Decoding & encoding:
-gst-launch-1.0 filesrc location=/home/khadas/bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux name=d d.video_0 ! h264parse ! v4l2h264dec capture-io-mode=0 ! video/x-raw,format=NV12 ! filesink location=/home/khadas/h264dec.nv12 +
-``` +
- +
-Another example to decode video from USB camera:+
  
 ```shell ```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 ! filesink location=test_0.nv12+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  ===== ===== H265 Hardware Decoding  =====
  
-Here is an example to decode H264 file to NV12 format file.+Here is an example to decode H265 file to NV12 and then encode to H265. 
 + 
 +Decoding & encoding:
  
  
 ```shell ```shell
-gst-launch-1.0 filesrc location=/home/khadas/bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux name=d d.video_0 ! h264parse ! v4l2h264dec capture-io-mode=0 ! video/x-raw,format=NV12 ! filesink location=/home/khadas/h264dec.nv12+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
 +```
  
Last modified: 2023/10/30 21:39 by nick

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