search for: maxplaybackrate

Hello, Is FEC supposed to work in NARROWBAND mode ?(with maxaveragebitrate=12000; maxplaybackrate=8000 ) ?I am having some confusing results, it appears that FEC is enabled in the encoder, but the decoder cannot find any packet with FEC. I am also wondering if this piece of code is correct (webrtc): /* The following is to parse the LBRR flags. */? if (opus_packet_parse(payload, payload_length_...

...thanks for the great work, not sure if this is the right list for this type of quesiton. We are looking to use only Opus as "one codec for all", with VoIP-out obviously we want to tune it. I am planning to use fmtp in SDP to control server/client Opus settings. Something like : - *maxplaybackrate*: a hint about the maximum output sampling rate that the receiver is capable of rendering in Hz. maxplaybackrate=8000 - *maxaveragebitrate*: specifies the maximum average receive bitrate of a session in bits per second (b/s). maxaveragebitrate=12000 I have a question about the doc...

...on a packet-per-packet basis as to whether FEC is useful considering the bit-rate, percentage of loss, and the exact audio content. Cheers, Jean-Marc On 05/02/15 11:46 AM, Dragos Oancea wrote: > Hello, > > Is FEC supposed to work in NARROWBAND mode (with > maxaveragebitrate=12000; maxplaybackrate=8000 ) ? > I am having some confusing results, it appears that FEC is enabled in > the encoder, but the decoder cannot find any packet with FEC. > > I am also wondering if this piece of code is correct (webrtc): > > /* The following is to parse the LBRR flags. */ > if (opus...

...t encoder and decoder has an algorithmic delay of 6.5 ms (lookahead and resampling delay). In Table 54 of https://tools.ietf.org/html/rfc6716 different delays for the resampler of the SILK encoder are given. However, I measure the same round trip delay for opus encoder->decoder regardless which maxplaybackrate I use. The round trip delay corresponds to the 6.5 ms. Therefore my question: How is this 6.5 ms algorithmic delay distributed between encoder and decoder? May it be, that the reference implementation uses 5.75 ms at encoder side and 0.75 ms at decoder side (using equal resampling delay for encode...

Hey i have an interesting topic to discuss here. The main goal here is to be able to make a video call between two WebRTC endpoints registered on asterisk 13 it is a feature that definitely asterisk 13 should support . the problems that i faced with this is the following and i hope i could get an advise here. asterisk 13 vanilla version has some issues marking the video packets this complain

Hi all, I try to enable FEC in the encoder using the macro OPUS_SET_INBAND_FEC and I set the packet loss percentage to a constant value of 30%, using the macro OPUS_SET_PACKET_LOSS_PERC. Please find my encoder settings below: opus: encoder fmtp (maxplaybackrate=8000;maxaveragebitrate=24000;sprop-stereo=1;cbr=1;useinbandfec=1;usedtx=1) opus: encode bw=narrow bitrate=24000 fch=auto vbr=0 fec=1 expected loss=30 dtx=1 complex=10 At the decoder side when a packet is lost I call the decoder with the next params: opus_decode(ads->dec, NULL, 0, sampv, (in...

Dan Cropp wrote: > I had my screenshots flipped. Is there a way to make sure the Contact field is NOT included in the ACK response to the OK (for the Answer)? > > PJSIP is including the Contact for the ACK response to the OK. > Contact:<sip:1234 at xxx.xxx.xx.xxx:5060> > There is no configuration option to configure this behavior. What is the full SIP signaling? -- Joshua

...tp:97 mode=30 a=rtpmap:112 AAL2-G726-32/8000 a=rtpmap:9 G722/8000 a=rtpmap:118 L16/16000 a=rtpmap:102 G7221/16000 a=fmtp:102 bitrate=32000 a=rtpmap:115 G7221/32000 a=fmtp:115 bitrate=48000 a=rtpmap:116 G719/48000 a=fmtp:116 bitrate=64000 a=rtpmap:119 speex/32000 a=rtpmap:107 opus/48000/2 a=fmtp:107 maxplaybackrate=48000;sprop-maxcapturerate=48000;minptime=10;maxaveragebitrate=20000;stereo=0;sprop-stereo=0;cbr=0;useinbandfec=0;usedtx=0 a=rtpmap:96 SILK/8000 a=fmtp:96 maxaveragebitrate=10000 a=fmtp:96 usedtx=0 a=fmtp:96 useinbandfec=1 a=rtpmap:108 SILK/12000 a=fmtp:108 maxaveragebitrate=12000 a=fmtp:108 usedtx...