Displaying 2 results from an estimated 2 matches for "oc_enc_select_qi".
2009 Jun 11
1
Thusnelda - Floating point exception in encoder_toplevel.c:209
...the crash on demand, and it might only happen once every few days so
it's been fun trying to get a backtrace. The crash happens in a fairly
scary block of code, I wouldn't have a clue where to begin trying to fix it!
Here's what gdb has to say about it:
--
#0 0x00007f8d0e3ce515 in oc_enc_select_qi (cpi=0x7f8d0c14f010,
_qti=<value optimized out>, _trial=0) at enc/encoder_toplevel.c:209
209 rderiv=nframes[_qti]*KEY_RATIO[_qti]+drscale;
Missing separate debuginfos, use: debuginfo-install
SDL-1.2.13-7.fc10.x86_64 alsa-lib-1.0.20-1.fc10.x86_64
freetype-2.3.7-3.fc10.x86_64 g...
2009 Jul 08
2
Theora 1.1 rate controller
...697)
What is the exact behavior of rate controller in Theora and is or will be
CBR possible to use? At least, adaptive quantization is implemented (
http://wiki.xiph.org/Theora) but apparently not correctly to support CBR, or
am I missing something? I found that the quantizer values are adapted in
oc_enc_select_qi() and oc_enc_calc_lamba() without being able to define the
actual behavior of these functions...
Having a constant bitrate that does not adapt to variations in the image
content is really a crucial feature for my application.
Thank you for your inputs and clarifications! :)
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