Displaying 3 results from an estimated 3 matches for "oc_cs_itu_rec_470bg".
2005 Nov 03
1
CPU usage while encoding...
...eora is
too CPU expensive ( compared to FFmpeg - MP4 ) ...
Perhaps I'm using wrong parameters:
ti.fps_numerator = fps * 11 + 1; // var framerate
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 =...
2006 Oct 04
3
Encoding - CPU usage ...
...9;m here to ask for any kind tips to reduce the CPU usage.
- Hardware... do you think there are better CPUs for Theora? AMD64?
- CPU optimisations... they are enabled by default, right?
- Encoding parameters... 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_au...
2004 Nov 20
0
ffmpeg2theora start and end time support
...info.ti.fps_numerator=venc->frame_rate;
info.ti.fps_denominator = venc->frame_rate_base;
/* this is pixel aspect ratio */
info.ti.aspect_numerator=this->aspect_numerator;
info.ti.aspect_denominator=this->aspect_denominator;
// FIXME: is all input material with fps==25 OC_CS_ITU_REC_470BG?
// guess not, commandline option to select colorspace would be the best.
if(this->fps==25)
info.ti.colorspace = OC_CS_ITU_REC_470BG;
else if(abs(this->fps-30)<1)
info.ti.colorspace = OC_CS_ITU_REC_470M;
else
info.ti.colorspace = OC_CS_UNSPECIFIED;
//FIXME: allow...