[XviD-devel] xvid 2 pass -mplayer bug
Marco "elcabesa" Belli
elcabesa at inwind.it
Sun Feb 9 19:59:47 CET 2003
i have found a bug inside xvid or mplayer that make mplayer crash using 2 pass
and lumi_mask.
since ed gom read this forum and he makde the xvid_vbr.c file of mplayer i'm
posting here the bug
mplayer 2 pass ocde inside static int vbr_getquant_2pass2(void *sstate)
make quant not able to change more than two form previous frame
if(state->last_quant && capped_to_max_framesize == 0) {
if (quant > state->last_quant + 2)
{
quant = state->last_quant + 2;
}
if (quant < state->last_quant - 2)
{
quant = state->last_quant - 2;
}
}
}
return(quant);
but quant that mplayer give to xvid is changed by dapt_quant
pEnc->current->quant =
adaptive_quantization(pEnc->current->image.y,
pEnc->mbParam.edged_width, temp_dquants,
pEnc->current->quant, pEnc->current->quant,
2 * pEnc->current->quant,
pEnc->mbParam.mb_width,
pEnc->mbParam.mb_height);
this is what happen
mplayer set quant 4
xvid lumi_mask adapt quant change it to 10
mplayer get last_quant by xvid =10
then mplayer give a new quant ., it choose 5 but then it MUST CHANGE it to 8
xvid lumi mask adapt it to 15
mplayer try to lower it but it can laso do 13
...
etc etc
if there are more than 80 -90 black frames.. mencoder simply crash
byee
please tell me how to fix it
do you prefere limit lumi_mask power or xvid_vbr module?
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