Quantcast Bitrates: CQmatic and Average Bitrate Inaccuracy's - digitalFAQ.com Forums [Archives]
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10-26-2003, 03:56 PM
Racer99 Racer99 is offline
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Kwag,

I got to thinking after reading your chat in the thread "TMPEG 2-pass engine. A key to faster CQ prediction." about average bitrates.

Quote:
kvcdnet: Have you noticed that Bitrate viewer gives lower MPEG-1 average bitrate than if viewed with VirtualDub?
krassi10: Yes, i've already noticed that. Thats really curious, i think it's the same with mpeg2. But the question is: which one is right
kvcdnet: VirtualDub. I manually calculated an average bitrate, and Vdub is the correct value.
So I started to compile some numbers. Here is what I got. Sorry for the ugly format. Copy the data and save as a CSV file and open with Excel, or copy the code and save as HTML.

The data includes 13 MPEG-1 from DVD encodes, 11 MPEG-2 from DVD encodes and 8 MPEG-2 from DIVX encodes. The data shows a wide variety of results. All CQ's were derived from CQMatic and used .57 multiplier for the MIN bitrate. The Max Bitrate for the MPEG-1's is 2100 and the MPEG-2's was either 4000 or 5000 (depended on desired destination size). All use an MA script and CQ with TMPGEnc.

The thing that stands out the most to me is difference between calculated average bitrate and the actual bitrate (determined by VirtualDub). The calculated median is 1.76%. Not bad, but there may be room for improvement. If you need further info, let me know.
  • Movie,Predicted Size,Actual Size,Diff,Calculate Bitrate,Actual Bitrate,Diff,Movie Length,Source,Format
    1,"729,464","724,769",-0.64%,808,822,1.73%,120m 22s,DVD,MPEG-1
    2,"719,000","717,766",-0.17%,711,726,2.11%,134m 54s,DVD,MPEG-1
    3,"730,160","723,525",-0.91%,815,827,1.47%,119m 24s,DVD,MPEG-1
    4,"719,444","730,235",1.50%,692,720,4.05%,138m 33s,DVD,MPEG-1
    5,"562,224","535,871",-4.69%,"2,069","2,019",-2.42%,36m 14s,DVD,MPEG-1
    6,"704,932","691,402",-1.92%,691,694,0.43%,136m 02s,DVD,MPEG-1
    7,"702,300","715,292",1.85%,673,702,4.31%,139m 10s,DVD,MPEG-1
    8,"747,618","718,829",-3.85%,"1,170","1,152",-1.54%,85m 13s,DVD,MPEG-1
    9,"758,880","761,043",0.29%,"1,760","1,807",2.67%, 57m 30s,DVD,MPEG-1
    10,"763,888","760,176",-0.49%,"1,948","1,985",1.90%,52m 17s,DVD,MPEG-1
    11,"753,384","752,549",-0.11%,"1,192","1,219",2.27%,84m 18s,DVD,MPEG-1
    12,"737,608","733,718",-0.53%,"1,013","1,031",1.78%,97m 08s,DVD,MPEG-1
    13,"720,812","690,361",-4.22%,711,690,-2.95%,137m 17s,DVD,MPEG-1
    14,"1,018,280","1,003,742",-1.43%,"1,507","1,522",1.00%,90m 06s,DVD,MPEG-2
    15,"1,364,120","1,355,439",-0.64%,"1,546","1,573",1.75%,117m 36s,DVD,MPEG-2
    16,"2,044,120","2,028,840",-0.75%,"1,530","1,563",2.16%,178m 10s,DVD,MPEG-2
    17,"1,373,760","1,392,875",1.39%,"1,671","1,735",3 .83%,109m 36s,DVD,MPEG-2
    18,"1,352,580","1,328,525",-1.78%,"1,371","1,382",0.80%,131m 13s,DVD,MPEG-2
    19,"1,358,872","1,402,055",3.18%,"1,621","1,713",5 .68%,111m 46s,DVD,MPEG-2
    20,"1,356,460","1,361,539",0.37%,"1,375","1,390",1 .09%,133m 16s,DVD,MPEG-2
    21,"1,306,416","1,251,090",-4.23%,"1,261","1,237",-1.90%,138m 06s,DVD,MPEG-2
    22,"2,063,672","1,852,864",-10.22%,"1,987","2,025",1.91%,138m 27s,DVD,MPEG-2
    23,"992,500","1,008,390",1.60%,"1,102","1,147",4.0 8%,120m 07s,DVD,MPEG-2
    24,"992,060","940,061",-5.24%,"1,098","1,072",-2.37%,120m 29s,DVD,MPEG-2
    25,"1,383,860","1,343,981",-2.88%,"1,824","1,814",-0.55%,101m 11s,DIVX,MPEG-2
    26,"1,346,560","1,337,411",-0.68%,"1,086","1,104",1.66%,165m 20s,DIVX,MPEG-2
    27,"1,024,320","997,462",-2.62%,"1,605","1,601",-0.25%,85m 04s,DIVX,MPEG-2
    28,"1,023,840","1,063,430",3.87%,"1,452","1,512",4 .13%,94m 00s,DIVX,MPEG-2
    29,"995,600","1,009,548",1.40%,"1,218","1,265",3.8 6%,109m 00s,DIVX,MPEG-2
    30,"984,760","985,531",0.08%,"1,112","1,140",2.52% ,118m 02s,DIVX,MPEG-2
    31,"1,010,060","925,305",-8.39%,"1,389","1,358",-2.23%,96m 57s,DIVX,MPEG-2
    32,"987,840","998,038",1.03%,"1,141","1,180",3.42% ,115m 28s,DIVX,MPEG-2
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  <td height=18 class=xl2426812 width=47 style='height:13.5pt;width:35pt'>Movie</td>
  <td class=xl2526812 width=121 style='width:91pt'>Predicted Size</td>
  <td class=xl2526812 width=96 style='width:72pt'>Actual Size</td>
  <td class=xl2426812 width=63 style='width:47pt'>Diff</td>
  <td class=xl2526812 width=145 style='width:109pt'>Calculate Bitrate</td>
  <td class=xl2526812 width=121 style='width:91pt'>Actual Bitrate</td>
  <td class=xl2426812 width=55 style='width:41pt'>Diff</td>
  <td class=xl2426812 width=104 style='width:78pt'>Movie Length</td>
  <td class=xl2426812 width=55 style='width:41pt'>Source</td>
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  <td class=xl2726812 x:num="729464">729,464</td>
  <td class=xl2726812 x:num="724769">724,769</td>
  <td class=xl2826812 x:num="-6.4362326310825483E-3" x:fmla="=(+C2-B2)/B2">-0.64%</td>
  <td class=xl2726812 x:num>808</td>
  <td class=xl2726812 x:num>822</td>
  <td class=xl2826812 x:num="1.7326732673267328E-2" x:fmla="=(+F2-E2)/E2">1.73%</td>
  <td class=xl2626812>120m 22s</td>
  <td class=xl2626812>DVD</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>2</td>
  <td class=xl2726812 x:num="719000">719,000</td>
  <td class=xl2726812 x:num="717766">717,766</td>
  <td class=xl2826812 x:num="-1.7162726008344924E-3" x:fmla="=(+C3-B3)/B3">-0.17%</td>
  <td class=xl2726812 x:num>711</td>
  <td class=xl2726812 x:num>726</td>
  <td class=xl2826812 x:num="2.1097046413502109E-2" x:fmla="=(+F3-E3)/E3">2.11%</td>
  <td class=xl2626812>134m 54s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-1</td>
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  <td class=xl2726812 x:num="730160">730,160</td>
  <td class=xl2726812 x:num="723525">723,525</td>
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  <td class=xl2626812>119m 24s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-1</td>
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  <td class=xl2826812 x:num="1.4999082624915908E-2" x:fmla="=(+C5-B5)/B5">1.50%</td>
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  <td class=xl2726812 x:num>720</td>
  <td class=xl2826812 x:num="4.046242774566474E-2" x:fmla="=(+F5-E5)/E5">4.05%</td>
  <td class=xl2626812>138m 33s</td>
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  <td class=xl2726812 x:num="562224">562,224</td>
  <td class=xl2726812 x:num="535871">535,871</td>
  <td class=xl2826812 x:num="-4.6872776686872134E-2" x:fmla="=(+C6-B6)/B6">-4.69%</td>
  <td class=xl2726812 x:num="2069">2,069</td>
  <td class=xl2726812 x:num="2019">2,019</td>
  <td class=xl2826812 x:num="-2.4166263895601739E-2" x:fmla="=(+F6-E6)/E6">-2.42%</td>
  <td class=xl2626812>36m 14s</td>
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  <td class=xl2726812 x:num="704932">704,932</td>
  <td class=xl2726812 x:num="691402">691,402</td>
  <td class=xl2826812 x:num="-1.9193340634273946E-2" x:fmla="=(+C7-B7)/B7">-1.92%</td>
  <td class=xl2726812 x:num>691</td>
  <td class=xl2726812 x:num>694</td>
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  <td class=xl2626812>136m 02s</td>
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  <td class=xl2626812>MPEG-1</td>
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  <td class=xl2726812 x:num="702300">702,300</td>
  <td class=xl2726812 x:num="715292">715,292</td>
  <td class=xl2826812 x:num="1.849921685889221E-2" x:fmla="=(+C8-B8)/B8">1.85%</td>
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  <td class=xl2626812>139m 10s</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>8</td>
  <td class=xl2726812 x:num="747618">747,618</td>
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  <td class=xl2726812 x:num="1152">1,152</td>
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  <td class=xl2626812>85m 13s</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>9</td>
  <td class=xl2726812 x:num="758880">758,880</td>
  <td class=xl2726812 x:num="761043">761,043</td>
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  <td class=xl2826812 x:num="2.6704545454545453E-2" x:fmla="=(+F10-E10)/E10">2.67%</td>
  <td class=xl2626812>57m 30s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-1</td>
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 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>10</td>
  <td class=xl2726812 x:num="763888">763,888</td>
  <td class=xl2726812 x:num="760176">760,176</td>
  <td class=xl2826812 x:num="-4.8593511090631088E-3" x:fmla="=(+C11-B11)/B11">-0.49%</td>
  <td class=xl2726812 x:num="1948">1,948</td>
  <td class=xl2726812 x:num="1985">1,985</td>
  <td class=xl2826812 x:num="1.8993839835728953E-2" x:fmla="=(+F11-E11)/E11">1.90%</td>
  <td class=xl2626812>52m 17s</td>
  <td class=xl2626812>DVD</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>11</td>
  <td class=xl2726812 x:num="753384">753,384</td>
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  <td class=xl2726812 x:num="1192">1,192</td>
  <td class=xl2726812 x:num="1219">1,219</td>
  <td class=xl2826812 x:num="2.2651006711409395E-2" x:fmla="=(+F12-E12)/E12">2.27%</td>
  <td class=xl2626812>84m 18s</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>12</td>
  <td class=xl2726812 x:num="737608">737,608</td>
  <td class=xl2726812 x:num="733718">733,718</td>
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  <td class=xl2726812 x:num="1013">1,013</td>
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  <td class=xl2826812 x:num="1.7769002961500493E-2" x:fmla="=(+F13-E13)/E13">1.78%</td>
  <td class=xl2626812>97m 08s</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>13</td>
  <td class=xl2726812 x:num="720812">720,812</td>
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  <td class=xl2826812 x:num="-4.2245412118555183E-2" x:fmla="=(+C14-B14)/B14">-4.22%</td>
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  <td class=xl2826812 x:num="-2.9535864978902954E-2" x:fmla="=(+F14-E14)/E14">-2.95%</td>
  <td class=xl2626812>137m 17s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-1</td>
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  <td height=18 class=xl2626812 style='height:13.5pt' x:num>14</td>
  <td class=xl2726812 x:num="1018280">1,018,280</td>
  <td class=xl2726812 x:num="1003742">1,003,742</td>
  <td class=xl2826812 x:num="-1.4277016144871745E-2" x:fmla="=(+C15-B15)/B15">-1.43%</td>
  <td class=xl2726812 x:num="1507">1,507</td>
  <td class=xl2726812 x:num="1522">1,522</td>
  <td class=xl2826812 x:num="9.9535500995355016E-3" x:fmla="=(+F15-E15)/E15">1.00%</td>
  <td class=xl2626812>90m 06s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>15</td>
  <td class=xl2726812 x:num="1364120">1,364,120</td>
  <td class=xl2726812 x:num="1355439">1,355,439</td>
  <td class=xl2826812 x:num="-6.3638096355159374E-3" x:fmla="=(+C16-B16)/B16">-0.64%</td>
  <td class=xl2726812 x:num="1546">1,546</td>
  <td class=xl2726812 x:num="1573">1,573</td>
  <td class=xl2826812 x:num="1.7464424320827943E-2" x:fmla="=(+F16-E16)/E16">1.75%</td>
  <td class=xl2626812>117m 36s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>16</td>
  <td class=xl2726812 x:num="2044120">2,044,120</td>
  <td class=xl2726812 x:num="2028840">2,028,840</td>
  <td class=xl2826812 x:num="-7.4750993092382052E-3" x:fmla="=(+C17-B17)/B17">-0.75%</td>
  <td class=xl2726812 x:num="1530">1,530</td>
  <td class=xl2726812 x:num="1563">1,563</td>
  <td class=xl2826812 x:num="2.1568627450980392E-2" x:fmla="=(+F17-E17)/E17">2.16%</td>
  <td class=xl2626812>178m 10s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>17</td>
  <td class=xl2726812 x:num="1373760">1,373,760</td>
  <td class=xl2726812 x:num="1392875">1,392,875</td>
  <td class=xl2826812 x:num="1.3914366410435593E-2" x:fmla="=(+C18-B18)/B18">1.39%</td>
  <td class=xl2726812 x:num="1671">1,671</td>
  <td class=xl2726812 x:num="1735">1,735</td>
  <td class=xl2826812 x:num="3.8300418910831836E-2" x:fmla="=(+F18-E18)/E18">3.83%</td>
  <td class=xl2626812>109m 36s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>18</td>
  <td class=xl2726812 x:num="1352580">1,352,580</td>
  <td class=xl2726812 x:num="1328525">1,328,525</td>
  <td class=xl2826812 x:num="-1.7784530305046651E-2" x:fmla="=(+C19-B19)/B19">-1.78%</td>
  <td class=xl2726812 x:num="1371">1,371</td>
  <td class=xl2726812 x:num="1382">1,382</td>
  <td class=xl2826812 x:num="8.023340627279359E-3" x:fmla="=(+F19-E19)/E19">0.80%</td>
  <td class=xl2626812>131m 13s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>19</td>
  <td class=xl2726812 x:num="1358872">1,358,872</td>
  <td class=xl2726812 x:num="1402055">1,402,055</td>
  <td class=xl2826812 x:num="3.1778563396699613E-2" x:fmla="=(+C20-B20)/B20">3.18%</td>
  <td class=xl2726812 x:num="1621">1,621</td>
  <td class=xl2726812 x:num="1713">1,713</td>
  <td class=xl2826812 x:num="5.6755089450956198E-2" x:fmla="=(+F20-E20)/E20">5.68%</td>
  <td class=xl2626812>111m 46s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>20</td>
  <td class=xl2726812 x:num="1356460">1,356,460</td>
  <td class=xl2726812 x:num="1361539">1,361,539</td>
  <td class=xl2826812 x:num="3.7443050292673575E-3" x:fmla="=(+C21-B21)/B21">0.37%</td>
  <td class=xl2726812 x:num="1375">1,375</td>
  <td class=xl2726812 x:num="1390">1,390</td>
  <td class=xl2826812 x:num="1.090909090909091E-2" x:fmla="=(+F21-E21)/E21">1.09%</td>
  <td class=xl2626812>133m 16s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>21</td>
  <td class=xl2726812 x:num="1306416">1,306,416</td>
  <td class=xl2726812 x:num="1251090">1,251,090</td>
  <td class=xl2826812 x:num="-4.234945071095271E-2" x:fmla="=(+C22-B22)/B22">-4.23%</td>
  <td class=xl2726812 x:num="1261">1,261</td>
  <td class=xl2726812 x:num="1237">1,237</td>
  <td class=xl2826812 x:num="-1.9032513877874701E-2" x:fmla="=(+F22-E22)/E22">-1.90%</td>
  <td class=xl2626812>138m 06s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>22</td>
  <td class=xl2726812 x:num="2063672">2,063,672</td>
  <td class=xl2726812 x:num="1852864">1,852,864</td>
  <td class=xl2826812 x:num="-0.10215189235498665" x:fmla="=(+C23-B23)/B23">-10.22%</td>
  <td class=xl2726812 x:num="1987">1,987</td>
  <td class=xl2726812 x:num="2025">2,025</td>
  <td class=xl2826812 x:num="1.9124308002013084E-2" x:fmla="=(+F23-E23)/E23">1.91%</td>
  <td class=xl2626812>138m 27s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>23</td>
  <td class=xl2726812 x:num="992500">992,500</td>
  <td class=xl2726812 x:num="1008390">1,008,390</td>
  <td class=xl2826812 x:num="1.6010075566750631E-2" x:fmla="=(+C24-B24)/B24">1.60%</td>
  <td class=xl2726812 x:num="1102">1,102</td>
  <td class=xl2726812 x:num="1147">1,147</td>
  <td class=xl2826812 x:num="4.0834845735027221E-2" x:fmla="=(+F24-E24)/E24">4.08%</td>
  <td class=xl2626812>120m 07s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>24</td>
  <td class=xl2726812 x:num="992060">992,060</td>
  <td class=xl2726812 x:num="940061">940,061</td>
  <td class=xl2826812 x:num="-5.2415176501421287E-2" x:fmla="=(+C25-B25)/B25">-5.24%</td>
  <td class=xl2726812 x:num="1098">1,098</td>
  <td class=xl2726812 x:num="1072">1,072</td>
  <td class=xl2826812 x:num="-2.3679417122040074E-2" x:fmla="=(+F25-E25)/E25">-2.37%</td>
  <td class=xl2626812>120m 29s</td>
  <td class=xl2626812>DVD</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>25</td>
  <td class=xl2726812 x:num="1383860">1,383,860</td>
  <td class=xl2726812 x:num="1343981">1,343,981</td>
  <td class=xl2826812 x:num="-2.8817221395227841E-2" x:fmla="=(+C26-B26)/B26">-2.88%</td>
  <td class=xl2726812 x:num="1824">1,824</td>
  <td class=xl2726812 x:num="1814">1,814</td>
  <td class=xl2826812 x:num="-5.4824561403508769E-3" x:fmla="=(+F26-E26)/E26">-0.55%</td>
  <td class=xl2626812>101m 11s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>26</td>
  <td class=xl2726812 x:num="1346560">1,346,560</td>
  <td class=xl2726812 x:num="1337411">1,337,411</td>
  <td class=xl2826812 x:num="-6.7943500475285169E-3" x:fmla="=(+C27-B27)/B27">-0.68%</td>
  <td class=xl2726812 x:num="1086">1,086</td>
  <td class=xl2726812 x:num="1104">1,104</td>
  <td class=xl2826812 x:num="1.6574585635359115E-2" x:fmla="=(+F27-E27)/E27">1.66%</td>
  <td class=xl2626812>165m 20s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>27</td>
  <td class=xl2726812 x:num="1024320">1,024,320</td>
  <td class=xl2726812 x:num="997462">997,462</td>
  <td class=xl2826812 x:num="-2.6220321774445485E-2" x:fmla="=(+C28-B28)/B28">-2.62%</td>
  <td class=xl2726812 x:num="1605">1,605</td>
  <td class=xl2726812 x:num="1601">1,601</td>
  <td class=xl2826812 x:num="-2.4922118380062306E-3" x:fmla="=(+F28-E28)/E28">-0.25%</td>
  <td class=xl2626812>85m 04s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>28</td>
  <td class=xl2726812 x:num="1023840">1,023,840</td>
  <td class=xl2726812 x:num="1063430">1,063,430</td>
  <td class=xl2826812 x:num="3.8668151273636507E-2" x:fmla="=(+C29-B29)/B29">3.87%</td>
  <td class=xl2726812 x:num="1452">1,452</td>
  <td class=xl2726812 x:num="1512">1,512</td>
  <td class=xl2826812 x:num="4.1322314049586778E-2" x:fmla="=(+F29-E29)/E29">4.13%</td>
  <td class=xl2626812>94m 00s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>29</td>
  <td class=xl2726812 x:num="995600">995,600</td>
  <td class=xl2726812 x:num="1009548">1,009,548</td>
  <td class=xl2826812 x:num="1.400964242667738E-2" x:fmla="=(+C30-B30)/B30">1.40%</td>
  <td class=xl2726812 x:num="1218">1,218</td>
  <td class=xl2726812 x:num="1265">1,265</td>
  <td class=xl2826812 x:num="3.858784893267652E-2" x:fmla="=(+F30-E30)/E30">3.86%</td>
  <td class=xl2626812>109m 00s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>30</td>
  <td class=xl2726812 x:num="984760">984,760</td>
  <td class=xl2726812 x:num="985531">985,531</td>
  <td class=xl2826812 x:num="7.8293188187984893E-4" x:fmla="=(+C31-B31)/B31">0.08%</td>
  <td class=xl2726812 x:num="1112">1,112</td>
  <td class=xl2726812 x:num="1140">1,140</td>
  <td class=xl2826812 x:num="2.5179856115107913E-2" x:fmla="=(+F31-E31)/E31">2.52%</td>
  <td class=xl2626812>118m 02s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>31</td>
  <td class=xl2726812 x:num="1010060">1,010,060</td>
  <td class=xl2726812 x:num="925305">925,305</td>
  <td class=xl2826812 x:num="-8.3910856780785303E-2" x:fmla="=(+C32-B32)/B32">-8.39%</td>
  <td class=xl2726812 x:num="1389">1,389</td>
  <td class=xl2726812 x:num="1358">1,358</td>
  <td class=xl2826812 x:num="-2.2318214542836574E-2" x:fmla="=(+F32-E32)/E32">-2.23%</td>
  <td class=xl2626812>96m 57s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
 <tr height=18 style='height:13.5pt'>
  <td height=18 class=xl2626812 style='height:13.5pt' x:num>32</td>
  <td class=xl2726812 x:num="987840">987,840</td>
  <td class=xl2726812 x:num="998038">998,038</td>
  <td class=xl2826812 x:num="1.0323534175574993E-2" x:fmla="=(+C33-B33)/B33">1.03%</td>
  <td class=xl2726812 x:num="1141">1,141</td>
  <td class=xl2726812 x:num="1180">1,180</td>
  <td class=xl2826812 x:num="3.4180543382997371E-2" x:fmla="=(+F33-E33)/E33">3.42%</td>
  <td class=xl2626812>115m 28s</td>
  <td class=xl2626812>DIVX</td>
  <td class=xl2626812>MPEG-2</td>
 </tr>
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  <td width=96 style='width:72pt'></td>
  <td width=63 style='width:47pt'></td>
  <td width=145 style='width:109pt'></td>
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  <td width=55 style='width:41pt'></td>
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</div>





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Food for thought

Racer99
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Someday, 12:01 PM
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  #2  
10-26-2003, 08:39 PM
kwag kwag is offline
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Hi Racer99,

1.76% is not bad at all, considering the unlinearity of CQ in TMPEG
I don't think there's much more room for improvement.
Unless the developer of TMPEG HEARS US, AND DECIDES TO MAKE CQ LINEAR
I hope he gets this message
Thanks for the test. That sure makes it clear that CQMatic is doing a good job on prediction
( But I never give up, and I hope to surprise everyone one day )

Here's your data in HTML: http://www.kvcd.net/data.html for everyone to see it

-kwag
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