<html><head><style>p{margin-top:0px;margin-bottom:0px;}</style></head><body><div style="font-size:10pt; font-family:Gulim, sans-serif;"><p><span style="font-size: 13.3333px;">I'm replying with another mail client now. sorry for duplicate.</span></p><p> </p><p><span style="font-size: 13.3333px;">1. my demuxer is not ready to commit yet... but simple question is..</span></p><p><span style="font-size: 13.3333px;">AV_CODEC_ID_NONE means g729 over rtp is not supported? or codec is recognized elsewhere?</span></p><p><span style="font-size: 13.3333px;">Because g729 is very common in voip, so I couldn't believe ffmpeg doesn't support g729 over rtp.</span></p><p><span style="font-size: 13.3333px;">If it is really not supported, I would start thinking contribute.</span></p><p> </p><p><span style="font-size: 13.3333px;">2. g729a pcap sample is in the wireshark sample page I posted, but g729b is hard to find on the internet :(</span></p><p><span style="font-size: 13.3333px;"> I'll search more.</span></p><p><span style="font-size: 13.3333px;"> </span></p><p><span style="font-size: 13.3333px;"> </span></p>2018-03-13 8:15 GMT+01:00, lagavulin2016 <lagavulin2016@naver.com>:<br>> Hello. I'm trying to convert voip pcap to wav.<br>> voip pcap has a few bidirectional call and includes sip and rtp packets.<br>> (for example, <a href="https://wiki.wireshark.org/SampleCaptures#SIP_and_RTP">https://wiki.wireshark.org/SampleCaptures#SIP_and_RTP</a>)<br>> So I created libavformat/voip_pcap.c which is similar to libavformat/rtsp.c<br>> with pcap file parsing instead of networking.<br>> It seems to work except g729 codec.<br>> 1. g729 codec is not recognized because in rtp_payload_types from<br>> libavformat/rtp.c<br>> "G729" codec_id is AV_CODEC_ID_NONE. If I change to AV_CODEC_ID_G729, it<br>> is recognized well.<br>> Is this intentionally none? or g729 in rtp is not supported?<br><br>I believe a patch to support G.729 over rtp would be very welcome.<br>Do you know how such a patch could be tested?<br><br>> 2. g729 annex b has 2-bytes Silence Insertion Descriptor(SID) frame<br>> but ffmpeg doesn't seem to support this.<br><br>Can you provide a real-life sample of G.729B?<br><br>Carl Eugen<br>_______________________________________________<br>Libav-user mailing list<br>Libav-user@ffmpeg.org<br>http://ffmpeg.org/mailman/listinfo/libav-user<br></div></body></html><table style='display:none'><tr><td><img src="https://mail.naver.com/readReceipt/notify/?img=gsR9%2B4JNM6mrKxgZW40naqwSMoUZMxU%2FpAFopAUZMxKwFAKlaA00aAbqKqU%2FpAKXtzFXp6UmKSl5WLl51zlqDBFdp6d5MreRhoRn16iC%2BS99brkZtzp4WBI0pZlTb4b%3D.gif" border="0"/></td></tr></table>