<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Hi <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> I am facing some streaming problem with avenc_aac encoding with compulab board (sender) and stream to PC running windows <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Sender (embedded system, running on Arch Linux, Gstreamer 1.14) <pre style="margin-top:0px;margin-bottom:calc(var(--s-prose-spacing) + 0.4em);padding:12px;line-height:1.30769;font-family:var(--ff-mono);font-size:13px;width:auto;max-height:600px;overflow:auto;background-color:var(--highlight-bg);border-radius:5px;color:var(--highlight-color);text-align:left"><code style="margin:0px;color:var(--black-800);border-radius:0px">gst-launch-1.0 audiotestsrc wave=9 \ ! audioconvert \ ! audioresample \ ! audio/x-raw,rate=48000,channels=2,depth=16,format=F32LE \ ! queue \ ! avenc_aac \ ! rtpmp4apay \ ! udpsink host=192.168.60.5 port=2345 </code></pre> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Receiver (PC system, running on Windows, Gstreamer 1.18) <pre style="margin-top:0px;margin-bottom:calc(var(--s-prose-spacing) + 0.4em);padding:12px;line-height:1.30769;font-family:var(--ff-mono);font-size:13px;width:auto;max-height:600px;overflow:auto;background-color:var(--highlight-bg);border-radius:5px;color:var(--highlight-color);text-align:left"><code style="margin:0px;color:var(--black-800);border-radius:0px">gst-launch-1.0 udpsrc port=2345 caps="application/x-rtp,media=audio,payload=96,encoding-name=MP4A-LATM" \ ! rtpmp4adepay \ ! queue \ ! decodebin \ ! queue \ ! audioconvert \ ! autoaudiosink async-handling=true </code></pre> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> However no sound (white noise) is outputted from the speaker. <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Steps taken to diagnose <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> 1. I have checked the result on Wireshark. From the filtered result, the packet send to the reciever is in KNet protocol. I wonder if this is correct? 2. Also I have replaced the autovideosink with fakesink, there is buffer going through the pipeline.. so the recieving is correct. Just I am not too sure whether the format recieved is correct? <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> 3. I also tested the sender pipeline up till avenc_aac stage and append it with avdec_aac ! audioconvert ! autoaudiosink. White noise could be heard from system. <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> <p style="margin-top:0px;margin-bottom:var(--s-prose-spacing);font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Would like help on <ol style="margin-top:0px;margin-bottom:var(--s-prose-spacing);margin-left:30px;font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;list-style:decimal;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> <li style="margin-top:0px;margin-bottom:var(--s-prose-spacing-condensed);overflow-wrap:break-word"> Is the packet in the correct protocol. Wondering is there additional settings i must give to the rtmp4apay? </li><li style="margin:0px;overflow-wrap:break-word"> How to adjust the reciever pipeline. I actually fashion it similar to the video pipeline that I did earlier, except accounting for the difference between video and audio </li><li style="margin:0px;overflow-wrap:break-word;display:block"> </li></ol> <p style="margin:0px;font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;font-size:15px;clear:both;color:rgb(35, 38, 41);text-align:left;background-color:rgb(255, 255, 255)"> Thanks in advance </div> </body> </html>