search for: noise_sensit

...int keyframe_auto_p; ogg_uint32_t keyframe_frequency; ogg_uint32_t keyframe_frequency_force; /* also used for decode init to get granpos shift correct */ ogg_uint32_t keyframe_data_target_bitrate; ogg_int32_t keyframe_auto_threshold; ogg_uint32_t keyframe_mindistance; ogg_int32_t noise_sensitivity; ogg_int32_t sharpness; ======================= #quality: I know that this can be used instead of specifying a target bitrate, but what are the legal values and what do they do? #quick_p: What is the legal values and what impact will this have on quality? #keyframe_auto_threshold: What d...

...ti.colorspace=OC_CS_UNSPECIFIED; ti.target_bitrate=bitrate; ti.dropframes_p=0; ti.quick_p=1; ti.keyframe_auto_p=1; ti.keyframe_frequency=64; ti.keyframe_frequency_force=64; ti.keyframe_data_target_bitrate=bitrate*1.5; ti.keyframe_auto_threshold=80; ti.keyframe_mindistance=8; ti.noise_sensitivity=1; theora_encode_init(&enc_state,&ti); theora_info_clear(&ti); } __declspec (dllexport) encode(signed char *yuvframe, ogg_page *op) { while (ogg_stream_pageout(&enc_stream, op) == 0) { yuv_buffer yuv_enc; yuv_enc.y_width=enc_width; yuv_enc.y_height=enc_he...

...opframes_p=0; m_ti.quick_p=1; // should always be 1 m_ti.keyframe_auto_p=1; m_ti.keyframe_frequency=64; m_ti.keyframe_frequency_force=64; m_ti.keyframe_data_target_bitrate=(ogg_uint32_t)(m_ti.target_bitrate*1.5 ); m_ti.keyframe_auto_threshold=80; m_ti.keyframe_mindistance=8; m_ti.noise_sensitivity=1; theora_encode_init(&m_td,&m_ti); theora_info_clear(&m_ti); Here is my decrypt init. Since I can join the stream of theora packets (enclosed in ogg packets) at any time, I don't get headers, but I know what format I'm sending them in anyway since I'm the one sen...

...mes_p=0; mTheoraInfo.quick_p=1; mTheoraInfo.keyframe_auto_p=1; mTheoraInfo.keyframe_frequency=64; mTheoraInfo.keyframe_frequency_force=64; mTheoraInfo.keyframe_data_target_bitrate=mTheoraInfo.target_bitrate*1.5; mTheoraInfo.keyframe_auto_threshold=80; mTheoraInfo.keyframe_mindistance=8; mTheoraInfo.noise_sensitivity=1; And i'm letting the user set target_bitrate, quality and keyframe_frequency... The fields i don't understand are quick_p.... what does this do ? What implications does it have on the other parameters. Should freq_force be set equal to keyframe_freq ? or doesn't matter. What...

Hi I was surprised with size of Theora files and thought of feedback. Following 1minute duration Theora and Xvid files were made from a y4m file. The resolution is 1280x720: 1. Xvid 17MB 2. Ogg/Theora Q7 31MB 3. Ogg/Theora Q8 38MB 4. Ogg/Theora Q9 49MB 5. Ogg/Theora Q10 61MB The Xvid file was made using mencoder by 2 passes with following options:

...= 1; tTheoraInfo.keyframe_frequency = 64; tTheoraInfo.keyframe_frequency_force = 64; tTheoraInfo.keyframe_data_target_bitrate = iVideoBitrate * 1.5; tTheoraInfo.keyframe_auto_threshold = 80; tTheoraInfo.keyframe_mindistance = 8; tTheoraInfo.noise_sensitivity = 1; printf( " %dx%d %dx%d %dx%d \n", tTheoraInfo.width, tTheoraInfo.height, tTheoraInfo.frame_width, tTheoraInfo.frame_height, tTheoraInfo.offset_x, tTheoraInfo.offset_y ); printf( " %d_%d %d_%d %d %d %d %d \n", tTheoraInfo.fps_numerator, tTheoraInfo....

...= 1; ti.keyframe_auto_p = 1; ti.keyframe_frequency = 64; ti.keyframe_frequency_force = 64; ti.keyframe_data_target_bitrate = ti.target_bitrate * 1.5; ti.keyframe_auto_threshold = 80; ti.keyframe_mindistance = 8; ti.noise_sensitivity = 1; I know it's hard. I suppose I can do little to reduce the load... Probably I can't use Theora for my application :( BTW tnx in advance. Ciao ciao, -Mat-

...the theora_info struct it creates: /* decode */ _ci->codec_setup /* encode */ _ci->quick_p _ci->dropframes_p _ci->keyframe_auto_p _ci->keyframe_frequency _ci->keyframe_data_target_bitrate _ci->keyframe_auto_threshold _ci->keyframe_mindistance _ci->noise_sensitivity _ci->sharpness The values of some of these are subsequently used by theora_encode_init, hence the errors from valgrind. It seems these have no equivalent in the new API, so perhaps they should be given reasonable default values. As is it seems the behaviour of the wrapper is non-determin...

...tTheoraInfo.keyframe_frequency = 64; tTheoraInfo.keyframe_frequency_force = 64; tTheoraInfo.keyframe_data_target_bitrate = tTheoraInfo.target_bitrate * 1.5; tTheoraInfo.keyframe_auto_threshold = 80; tTheoraInfo.keyframe_mindistance = 8; tTheoraInfo.noise_sensitivity = 1; ... - Other parameters...? Other ideas...? - Perhaps some options I could disable that consume CPU to get also less quality if it needs... I'm studying the Theora's examples and ffmpeg2theora to see if I can optimize my code... but I don't know libogg / libt...

...am->ti.keyframe_frequency = 16; videostream->ti.keyframe_frequency_force = 16; videostream->ti.keyframe_data_target_bitrate = (unsigned int) (video_r * 1.5); videostream->ti.keyframe_auto_threshold = 80; videostream->ti.keyframe_mindistance = 8; videostream->ti.noise_sensitivity = 1; and this, as I wrote above, creates 4KB packets, take a look at the below timings which show how many seconds it takes to encode one video page and send over TCP/IP (localhost): 1.452 sec. read 4243 bytes 2.429 sec. read 4151 bytes 3.33 sec. read 4299 bytes 4.476 sec. read 4224 bytes 5....

...ick_p = 1; ti.keyframe_auto_p = 1; ti.keyframe_frequency = 64; ti.keyframe_frequency_force = 64; ti.keyframe_data_target_bitrate = video_r * 1.5; ti.keyframe_auto_threshold = 80; ti.keyframe_mindistance = 8; ti.noise_sensitivity = 1; theora_encode_init( &td, &ti ); theora_info_clear( &ti ); /* write the bitstream header packets with proper page interleave */ /* first packet will get its own page automatically */ theora_encode_header( &td, &op ); ogg_stream_packetin( &a...

...yframe_frequency_force = 64; + info.ti.keyframe_frequency = this->keyint; + info.ti.keyframe_frequency_force = this->keyint; info.ti.keyframe_data_target_bitrate = info.ti.target_bitrate * 1.5; info.ti.keyframe_auto_threshold = 80; info.ti.keyframe_mindistance = 8; info.ti.noise_sensitivity = 1; + info.ti.sharpness = this->smoothness; // range 0-2, 0 sharp, 2 less sharp,less bandwidth - if(info.preset == V2V_PRESET_PREVIEW) + if(info.preset == V2V_PRESET_PREVIEW) { + fprintf (stderr, "WARNING: --v2v-preset overrides --smoothness"); info.ti.sharpness...

Hello everyone, I'm currently developing an adaptive videoconferencing application based on Ekiga which uses TFRC as a congestion control mechanism to adapt the video encoding rate according to the quality of the network experienced. My goal was to use the open-source Theora codec for video transmission. Unfortunately, it seemed that Theora 1.0 did not properly implement any correct CBR mode.

...0; info.ti.quick_p = 1; info.ti.keyframe_auto_p = 1; info.ti.keyframe_frequency = 64; info.ti.keyframe_frequency_force = 64; //info.ti.keyframe_data_target_bitrate = info.ti.target_bitrate * 1.5; info.ti.keyframe_auto_threshold = 80; info.ti.keyframe_mindistance = 8; info.ti.noise_sensitivity = 1; // range 0-2, 0 sharp, 2 less sharp,less bandwidth if(info.preset == V2V_PRESET_PREVIEW) info.ti.sharpness=2; } /* audio settings here */ info.channels = this->channels; info.sample_rate = this->sample_rate; info.vorbis_quality = this->audio_quality; the...