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About VPU codec simultaneously

Question asked by q qk on Jan 12, 2017
Latest reply on Jan 23, 2017 by Joan Xie

I have a question about VPU codec on IMX6Q.



First, a MP4 file is loaded into memmory, then it is be demuxed to the H264.
After that, we get the input H264 data. OK, now we need doing 3 things simultaneously.
1. H264 is send to VPU, then VPU decodes it to YUV. YUV is send to IPU or G2D for display.
2. At the same time, H264 is also send to VPU for re-encoding to a new H264 file.
3. At the same time, H264 is also send to a remote PC for RTP/UDP streaming simultaneously.


I use Gstreamer to finish that. the GST commond is :
gst-launch-1.0  -v filesrc location=`pwd`/base.mp4 ! qtdemux ! h264parse ! tee name=tt tt. ! queue2 ! rtph264pay ! udpsink host= port=5000 tt. ! queue2 ! imxvpudec ! tee name=t t. ! queue2 ! imxg2dvideosink t. ! queue2 ! imxvpuenc_h264 bitrate=10240 ! filesink location=new.h264


Now , we found that the IMX6Q has not a smooth play of the MP4 file on the LCD by using IPU or G2D. but the remote PC can play smoothly by using RTP/UDP.
How can I optimize that ?