search for: dropframes_p

..... and i put a proeprty page interface to allow the user to set a few encoding paramters to start off with... but changing the paramters doesn't seem to make barely any difference... These are the defaults i'm using... mTheoraInfo.target_bitrate=400000; mTheoraInfo.quality=30; mTheoraInfo.dropframes_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...

...cture) do and what values one should pass to them: If there is some documentation somewhere that I've missed, please direct me to it. ===== Extract from theora.h ===== int quality; int quick_p; /* quick encode/decode */ void *codec_setup; /* encode only */ int dropframes_p; 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...

...enc_width = width; enc_height = height; theora_info ti; theora_info_init(&ti); ti.width=width; ti.height=height; // must be /16 ti.frame_width=width; ti.frame_height=height; ti.offset_x=0; ti.offset_y=0; 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_in...

...or=10 * m_ti.fps_denominator; //10 is 10 frames per second m_ti.aspect_numerator=1; m_ti.aspect_denominator=1; m_ti.colorspace=OC_CS_UNSPECIFIED; m_ti.target_bitrate=0; // 0 if we are specifying quality m_ti.quality=5; // from 0 to 10, 10 is highest quality but higher files m_ti.dropframes_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_sens...

...iVideoAspNum; tTheoraInfo.aspect_denominator = iVideoAspDen; tTheoraInfo.colorspace = OC_CS_UNSPECIFIED; tTheoraInfo.pixelformat = OC_PF_420; tTheoraInfo.target_bitrate = iVideoBitrate; tTheoraInfo.quality = iVideoQuality; tTheoraInfo.dropframes_p = 0; tTheoraInfo.quick_p = 1; tTheoraInfo.keyframe_auto_p = 1; tTheoraInfo.keyframe_frequency = 64; tTheoraInfo.keyframe_frequency_force = 64; tTheoraInfo.keyframe_data_target_bitrate = iVideoBitrate * 1.5; tThe...

...rate ti.fps_denominator = 11; ti.aspect_numerator = 1; ti.aspect_denominator = 1; ti.colorspace = OC_CS_ITU_REC_470BG; // OC_CS_UNSPECIFIED; ti.pixelformat = OC_PF_420; ti.target_bitrate = 0; ti.quality = 1 * 6.3; 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 = ti.target_bitrate * 1.5; ti.keyframe_auto_threshold = 80; ti....

...p Tracing this through, the theora_info structure seen by theora_encode_init is created by th_info2theora_info in encapiwrapper.c. This in turn does not set the following members of 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 f...

..... now I use: ... theora_info tTheoraInfo; tTheoraInfo.colorspace = OC_CS_ITU_REC_470BG; /* OC_CS_UNSPECIFIED ? */ tTheoraInfo.pixelformat = OC_PF_420; tTheoraInfo.target_bitrate = 0; tTheoraInfo.quality = 15; tTheoraInfo.dropframes_p = 0; tTheoraInfo.quick_p = 1; tTheoraInfo.keyframe_auto_p = 1; tTheoraInfo.keyframe_frequency = 64; tTheoraInfo.keyframe_frequency_force = 64; tTheoraInfo.keyframe_data_target_bitrate = tTheoraInfo.target_bitrate *...

...tream->ti.fps_denominator = 10 * 100000; videostream->ti.aspect_numerator = 0; videostream->ti.aspect_denominator = 0; videostream->ti.colorspace = OC_CS_UNSPECIFIED; videostream->ti.target_bitrate = video_r; videostream->ti.quality = 1; videostream->ti.dropframes_p = 0; videostream->ti.quick_p = 1; videostream->ti.keyframe_auto_p = 1; videostream->ti.keyframe_frequency = 16; videostream->ti.keyframe_frequency_force = 16; videostream->ti.keyframe_data_target_bitrate = (unsigned int) (video_r * 1.5); videostream->ti.key...

...n; ti.fps_denominator = video_hzd; ti.aspect_numerator = video_an; ti.aspect_denominator = video_ad; ti.colorspace = OC_CS_UNSPECIFIED; ti.pixelformat = OC_PF_420; ti.target_bitrate = video_r; ti.quality = video_q; 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 = video_r * 1.5; ti.keyframe_auto_threshold = 80; ti.keyframe_m...

...ess = 8; + double max_good_framesync_change = 0.5; + const double framesync_thresh = 0.6; + int j; + for (i = 0; i < this->context->nb_streams; i++){ AVCodecContext *enc = &this->context->streams[i]->codec; switch (enc->codec_type){ @@ -414,16 +436,18 @@ info.ti.dropframes_p = 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_frequency = this->keyint; + info.ti.keyframe_frequency_force = this->keyint; info.ti.keyframe_data_target_bitrate = info.ti...

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.

...s->fps-30)<1) info.ti.colorspace = OC_CS_ITU_REC_470M; else info.ti.colorspace = OC_CS_UNSPECIFIED; //FIXME: allow target_bitrate as an alternative mode //only use quality mode for now. //info.ti.target_bitrate=1200; info.ti.quality = this->video_quality; info.ti.dropframes_p = 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....