search for: opus_set_bitrate

...ntation : "RTP Payload Format for Opus Speech and Audio Codec draft-spittka-payload-rtp-opus-03 maxaveragebitrate : Any positive integer is allowed but values outside the range between 6000 and 510000 SHOULD be ignored." If I understand, maxaveragebitrate" could/should be use with OPUS_SET_BITRATE However when looking at "opus_encoder_ctl" OPUS_SET_BITRATE documentation I see : "Configures the bitrate in the encoder. Rates from 500 to 512000 bits per second are meaningful" ------------------------------------------------------------------- I suppose "500",...

...ective encoded frames/packet to the respective channel. For this I changed the opus_demo as below. But the output of the second encoded frames is completely garbled. Appreciate if anyone can suggest how to handle this case. if(1) { opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate_bps)); len[toggle] = opus_encode(enc, in, frame_size, data[toggle], max_payload_bytes); } if(1) { opus_encoder_ctl(enc, OPUS_SET_BITRATE(32000)); enc_size = opus_encode(enc, in, frame_size, tmpBu...

...m IRC suggests that the app has to be aware of the losses and change it on the fly. Has anybody on the list tried this? Kelvin Chua On Wed, Mar 4, 2015 at 5:53 PM, Dragos Oancea <droancea at yahoo.com> wrote: > Hi Kelvin, > > You can use something like : > opus_encoder_ctl(enc,OPUS_SET_BITRATE(bitrate)); > opus_encoder_ctl(enc,OPUS_SET_MAX_BANDWIDTH(bandpass)); > bandpass is the audio bandpass , eg: OPUS_BANDWIDTH_WIDEBAND . > > You will need to calculate the codec bitrate from the available network > bitrate (by taking into account the size of the IP+UDP+RTP headers which...

...x packet size of 120 bytes, then you're absolutely certain the bitrate will never go over 48 kb/s. Jean-Marc On 05/12/2018 12:42 PM, Albin Stigö wrote: > Just a follow up... I guess I was a bit confused about the VBR > setting. I realise now that packets tend to stay very close to > OPUS_SET_BITRATE so that solves my problem. > > --Albin > > On Sat, May 12, 2018 at 6:19 PM, Albin Stigö <albin.stigo at gmail.com> wrote: >> Thanks for the input! >> >> --Albin >> >> On Sat, May 12, 2018 at 6:00 PM, Orestes Zoupanos >> <oresteszoupanos at...

Thanks for the input! --Albin On Sat, May 12, 2018 at 6:00 PM, Orestes Zoupanos <oresteszoupanos at hotmail.com> wrote: > Hi Albin! > > There may be some details at: https://tools.ietf.org/html/rfc7845#section-6 > > Otherwise, I hope someone else on this list might be able to give a better > formula for estimating packet size. > > Regards, > > Orestes >

...n with a (seemingly) low complexity it does not yield the desired result. *Setup code:* mode = opus_custom_mode_create(15625, 64, &err); size = opus_custom_encoder_get_size(mode, 1); enc = malloc(size); err = opus_custom_encoder_init(enc, mode, 1); err = opus_custom_encoder_ctl(enc, OPUS_SET_BITRATE(16000)); err = opus_custom_encoder_ctl(enc, OPUS_SET_COMPLEXITY(0)); size = opus_custom_decoder_get_size(mode, 1); dec = malloc(size); err = opus_custom_decoder_init(dec, mode, 1); *ISR code (called once every 4.096ms):* nbBytes = opus_custom_encode( enc, (opus_int16 *)lMic...

I am using libopus for my implementation. I wonder if anybody in the list have any experience on how to make libopus dynamically adjust its bitrate? On Mar 3, 2015 10:42 PM, "Benjamin Schwartz" <benjamin.m.schwartz at gmail.com> wrote: > It sounds like your software isn't adjusting the opus bitrate in response > to network conditions. For example, many WebRTC

..._APPLICATION_RESTRICTED_LOWDELAY, &err ); if (err != OPUS_OK) return; m_SurroundInfo.s.streams = (unsigned char)streams; m_SurroundInfo.s.coupled_streams = (unsigned char)coupled_streams; opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_BITRATE(bitRate)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_BANDWIDTH(OPUS_AUTO)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_VBR(0)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_VBR_CONSTRAINT(0)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_COMPLEXITY(10));...

...y encode/decode test on STM32F407ZG. A. opus version: latest 1.2.1 (TI: opus 1.1.2) B. KEIL 5.23 (TI: ARM compiler tool chain 5.2.7) C. setup the encoder as the below (fs is the sampling frequency) enc = opus_encoder_create(fs, chans, OPUS_APPLICATION_AUDIO, &opus_err); opus_encoder_ctl(enc, OPUS_SET_BITRATE(fs * 2)); opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_AUTO)); opus_encoder_ctl(enc, OPUS_SET_VBR(1)); opus_encoder_ctl(enc, OPUS_SET_VBR_CONSTRAINT(0)); opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(0)); opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(0)); opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNEL...

Hi Kelvin, You can use something like :opus_encoder_ctl(enc,OPUS_SET_BITRATE(bitrate));opus_encoder_ctl(enc,OPUS_SET_MAX_BANDWIDTH(bandpass)); bandpass is the audio bandpass?, eg: OPUS_BANDWIDTH_WIDEBAND . You will need to calculate the codec bitrate from the available network bitrate (by taking into account the size of the IP+UDP+RTP headers which is 40 bytes ) . By defaul...

...s 48000 sps, 64kHz bandwidth, two channels, OPUS_APPLICATION_AUDIO application. The lib version is 1.1.3. The initialization procedure is as follows: _encoder = opus_encoder_create(48000, 2, OPUS_APPLICATION_AUDIO, &error); error = opus_encoder_ctl(_encoder, OPUS_SET_BITRATE(64000)); _decoder = opus_decoder_create(48000, 2, &error); The variable error is always set to OPUS_OK. The encoding and decoding procedure is as follows: bytesEncoded = opus_encode(_encoder, _encoderBuffer, _frameSize, codedBuffer, sizeof(codedBuffer))...

...code a same voice frame(20ms sample frame) at different time intervals(not parallel encoding) for both A & B using same encoder handle by changing only bit rate. Issue here is, some noise is heard for B OPUS client, Ex: OpusEncoder* encoder = (OpusEncoder*)encHandle; opus_encoder_ctl(encoder, OPUS_SET_BITRATE(encProp->bitrate)); Is encoder fails to change bitrate to 16kbps even after setting the bit rate using opus_encoder_ctl API? Is there anyway to set bitrate according to requirement for same frame(20ms) encoding? -- Thanks & Regards Vittalprasad B R 8722397247

.... init codec with frame_size = 40ms , others is default, then in runtime changing: - bitrate = 6kbps: OK - bitrate = 24, 48kbps: Not OK I'm using opus_encoder_ctl api: opus_encoder_ctl(opus_data->enc,OPUS_SET_EXPERT_FRAME_DURATION(frame_duration)); opus_encoder_ctl(opus_data->enc, OPUS_SET_BITRATE(avg_bps)); Regards, Kamin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/opus/attachments/20180425/8a23b2c7/attachment.html>

Just a follow up... I guess I was a bit confused about the VBR setting. I realise now that packets tend to stay very close to OPUS_SET_BITRATE so that solves my problem. --Albin On Sat, May 12, 2018 at 6:19 PM, Albin Stigö <albin.stigo at gmail.com> wrote: > Thanks for the input! > > --Albin > > On Sat, May 12, 2018 at 6:00 PM, Orestes Zoupanos > <oresteszoupanos at hotmail.com> wrote: >> Hi Albin! &g...

Hey, I am having trouble with the size of the encoded bytes by Opus. I am also having issue with the Bandwidth ctl. Here is the scenario. If I encode 16khz sampled audio: opus_encoder_ctl(enc,OPUS_SET_MAX_BANDWIDTH(OPUS_BANDWIDTH_WIDEBAND)) opus_encoder_ctl(enc, OPUS_GET_BANDWIDTH(&x)) = 1102 opus_encoder_ctl(enc, OPUS_GET_MAX_BANDWIDTH(&x)) = 1103 average encoded size = 120 bytes if I

...nimize impact?Mark from IRC suggests that the app has to be aware of the losses and change it on the fly.Has anybody on the list tried this? Kelvin Chua On Wed, Mar 4, 2015 at 5:53 PM, Dragos Oancea <droancea at yahoo.com> wrote: Hi Kelvin, You can use something like :opus_encoder_ctl(enc,OPUS_SET_BITRATE(bitrate));opus_encoder_ctl(enc,OPUS_SET_MAX_BANDWIDTH(bandpass)); bandpass is the audio bandpass?, eg: OPUS_BANDWIDTH_WIDEBAND . You will need to calculate the codec bitrate from the available network bitrate (by taking into account the size of the IP+UDP+RTP headers which is 40 bytes ) . By defaul...

If you encode with int iByteSizeEncoded = opus_encode(m_enc, m_ShortsInput, (1920/sizeof(short)), m_EncodedBytes, (960*6)); ... the byte size is 120. I thought that an odd value like 359 has to be a fault on my side. I thought it would be a multiple of something. So 359 is really correct??? Thank you for clearing this up. Am 06.10.2013 16:50, schrieb Jean-Marc Valin: > Why

..._APPLICATION_RESTRICTED_LOWDELAY, &err ); if (err != OPUS_OK) return; m_SurroundInfo.s.streams = (unsigned char)streams; m_SurroundInfo.s.coupled_streams = (unsigned char)coupled_streams; opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_BITRATE(bitRate)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_BANDWIDTH(OPUS_AUTO)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_VBR(0)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_VBR_CONSTRAINT(0)); opus_multistream_encoder_ctl(m_MSEnc, OPUS_SET_COMPLEXITY(10));...

Hi All. I am seeing the following unexpected behavior with OPUS_SET_MAX_BANDWIDTH. I expect that setting this to OPUS_BANDWIDTH_NARROWBAND would give similar results to passing an 8Khz sample rate stream, but OPUS_SET_MAX_BANDWIDTH has almost no effect with any settings. My test data has 4Khz bandwidth. I am testing the opus encoder (latest versions) with the following opus_encoder_ctl

...>> mode = opus_custom_mode_create(15625, 64, &err); >> >> >> >> size = opus_custom_encoder_get_size(mode, 1); >> >> enc = malloc(size); >> >> err = opus_custom_encoder_init(enc, mode, 1); >> >> err = opus_custom_encoder_ctl(enc, OPUS_SET_BITRATE(16000)); >> >> err = opus_custom_encoder_ctl(enc, OPUS_SET_COMPLEXITY(0)); >> >> >> >> size = opus_custom_decoder_get_size(mode, 1); >> >> dec = malloc(size); >> >> err = opus_custom_decoder_init(dec, mode, 1); >> >> >> &...