topic About Encoding On IMX8qm in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/About-Encoding-On-IMX8qm/m-p/994784#M147629 <HTML><HEAD></HEAD><BODY><H2 style="color: #666666; background-color: #ffffff; font-weight: normal; font-size: 24px;"><STRONG>&nbsp;&nbsp;&nbsp;&nbsp;<SPAN style="font-size: 10.5000pt;">I </SPAN><SPAN style="font-size: 10.5000pt;">need help </SPAN><SPAN style="font-size: 10.5000pt;">about video encoding and decoding</SPAN><SPAN style="font-size: 10.5000pt;">&nbsp;on imx8qm. </SPAN></STRONG></H2><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG><SPAN style="font-size: 10.5000pt;">On the development board, I found the source code mxc_v4l2_vpu_test, which reads the v4l2 camera image and encodes it and saves it to a local file.</SPAN><SPAN style="font-size: 10.5000pt;">I adjusted the code, followed by the imx6 codec routine in mxc_vpu_enc.c to add UDP transmission implementation, and finally using imx8qm as the encoding end, imx6 as the decoding end, Data transmission through udp, but currently encountered some problems: the decoding terminal received the image has a delay of about 3 seconds, </SPAN><SPAN style="font-size: 10.5000pt;">i </SPAN><SPAN style="font-size: 10.5000pt;">found that imx8qm will have a storage frame operation before </SPAN><SPAN style="font-size: 10.5000pt;">en</SPAN><SPAN style="font-size: 10.5000pt;">coding, </SPAN><SPAN style="font-size: 10.5000pt;">The vpu start encode when the cache area after four frame data , but I think 4 frame data is also not been such a long delay.</SPAN><SPAN style="font-size: 10.5000pt;">&nbsp;</SPAN></STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">If you have ideas or related information about encoding on the IMX8qm,please share to me! </STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">Thank you!</STRONG></P></BODY></HTML> Thu, 20 Feb 2020 06:45:42 GMT fengyang 2020-02-20T06:45:42Z About Encoding On IMX8qm https://community.nxp.com/t5/i-MX-Processors/About-Encoding-On-IMX8qm/m-p/994784#M147629 <HTML><HEAD></HEAD><BODY><H2 style="color: #666666; background-color: #ffffff; font-weight: normal; font-size: 24px;"><STRONG>&nbsp;&nbsp;&nbsp;&nbsp;<SPAN style="font-size: 10.5000pt;">I </SPAN><SPAN style="font-size: 10.5000pt;">need help </SPAN><SPAN style="font-size: 10.5000pt;">about video encoding and decoding</SPAN><SPAN style="font-size: 10.5000pt;">&nbsp;on imx8qm. </SPAN></STRONG></H2><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG><SPAN style="font-size: 10.5000pt;">On the development board, I found the source code mxc_v4l2_vpu_test, which reads the v4l2 camera image and encodes it and saves it to a local file.</SPAN><SPAN style="font-size: 10.5000pt;">I adjusted the code, followed by the imx6 codec routine in mxc_vpu_enc.c to add UDP transmission implementation, and finally using imx8qm as the encoding end, imx6 as the decoding end, Data transmission through udp, but currently encountered some problems: the decoding terminal received the image has a delay of about 3 seconds, </SPAN><SPAN style="font-size: 10.5000pt;">i </SPAN><SPAN style="font-size: 10.5000pt;">found that imx8qm will have a storage frame operation before </SPAN><SPAN style="font-size: 10.5000pt;">en</SPAN><SPAN style="font-size: 10.5000pt;">coding, </SPAN><SPAN style="font-size: 10.5000pt;">The vpu start encode when the cache area after four frame data , but I think 4 frame data is also not been such a long delay.</SPAN><SPAN style="font-size: 10.5000pt;">&nbsp;</SPAN></STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">If you have ideas or related information about encoding on the IMX8qm,please share to me! </STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">&nbsp;</STRONG></P><P style="text-indent: 21.0000pt;"><STRONG style="font-size: 10.5000pt; ">Thank you!</STRONG></P></BODY></HTML> Thu, 20 Feb 2020 06:45:42 GMT https://community.nxp.com/t5/i-MX-Processors/About-Encoding-On-IMX8qm/m-p/994784#M147629 fengyang 2020-02-20T06:45:42Z Re: About Encoding On IMX8qm https://community.nxp.com/t5/i-MX-Processors/About-Encoding-On-IMX8qm/m-p/994785#M147630 <HTML><HEAD></HEAD><BODY><P>Hi y</P><P></P><P>one can look at below link with similar issue and try to use suggested hints</P><P><A href="https://community.nxp.com/message/358922#358922">https://community.nxp.com/message/358922#358922</A>&nbsp;</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 02 Mar 2020 06:49:02 GMT https://community.nxp.com/t5/i-MX-Processors/About-Encoding-On-IMX8qm/m-p/994785#M147630 igorpadykov 2020-03-02T06:49:02Z