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AVI-Overhead | Open | Select Audio A | Total File Size | Select Aspect Ratio | Set Credits Start | Compressibility Check | Encoding

The Encoding Process


Select the Bitrate tab in Gordianknot. Go to the Interleaving & AVI Overhead box and select 1x vbr mp3. This will prevent your movie from becoming larger than the actual video and audio sizes added together. This is a one time setup so will not have to be done again.

Open Project File

Next Press the Open button to load the DVD2AVI project file (.D2V).

Navigate to your Project folder and double click on the .d2v file.

This will open a new window showing the movie. Do not close this window. You can put it in the background by clicking on the original Gordian Knot screen or minimize it.

Select Audio A

Press the Select button for Audio A.

Navigate to to your project folder and double click on your .mp3 file.

Total File Size

In the Total Size box, enter either the number of CDs you want the movie to span across or you can type in the file size. You can re-adjust this later after you do the compressibility check that I explain later. If you are going to want to put the movie on a CD, check the Split final file into CD's box. If you don't check that box and make one large file, I will show you later how to split that file to fit on multiple CDs. I always start by selecting 1 CD at 700 MB and then adjust it later to get the best quality/size movie.

Select Aspect Ratio

Now go to the Resolution tab. In the Input Resolution box, Select NTSC.

In the Input Pixel Aspect Ratio box, select the correct Aspect Ratio, either wide screen (16:9) or full screen (4:3). This is usually written on the back of the DVD box or on the DVD itself. To be absolutely sure of the aspect ratio you can go to your Rip folder, where the .vob files were ripped to, and double click on the 'stream information.txt' file to view the video size. It will show either 16:9 or 4:3.

Next, in the Crop box, press the Auto Crop button. Wait until there are numbers in the four squares to the right, then select Smart Crop All. This will will give you the ideal crop values to minimize the aspect ratio error.

Set Credits Start

Now go back to the window that shows your video. Select the View tab and select resized for the menu. This is a one time setup so will not have to be done again.

Move your slider to the right to advance the movie to where your end credits start. They you can press Set Credits Start. The credits will be encoded at a lower quality which can slightly decrease your final file size. I recommend against setting the Credits Start if video is displaying behind the credits. Only set it if there is a solid black background behind the credits, otherwise, you may miss out on some good quality bloopers, music video or whatever else they may show during the credits.

Compressibility Check

This is the last step to do before you start encoding. Press the Save & Encode button on the window showing the movie.

The Save .avs screen will be displayed. At the bottom of the screen, if you Set Credits Start in the last step, then select Both in the Trim box. Otherwise, this area will be grayed out.

Next, select Use in the Compressibility Check box. Then press Now.

The following screen will display.

Press OK and wait. When the compressibility check has finished, minimize the movie window or put it in the background.

It took One Hour Photo about 8 minutes to finish.

Move the slider in the Output Resolution box so that the Aspect Error is close to 0 (.3 +/- or below) keeping the H-Zoom and W-Zoom greater than 60%. As a rule of thumb, I start at the lowest Width that still has a H-Zoom and W-Zoom greater than 60% and work my way up until I find an Aspect Error of .3+/- or below. I usually start at a width of 512 and work my way up or down from there. This movie encoded at 544x288 looked great on my big screen TV.

Now comes the fun. Notice the values in the Bits/(Pixel*Frame).

Here the percentage is 82.8. To get optimal results the percentage should be between 40-60. To lower this value you can either decrease the file size by pressing the Total File Size down arrow on the Bitrate tab or increase the output resolution by moving the slider (pictured above) to the right, remembering to keep the Aspect Error close to 0. Also, here your Bits/(Pixel*Frame) are .235. You want to keep the B/(P*F) around .17 for 1 CD and around .25 for 2 CDs. I keep all my DivX movies on my hard drive so my goal is to have the smallest file size possible with good quality so I can fit as many as I can on my hard drive. (If you plan on copying several movies to a DVD, this would be your goal also.) So I would keep my resolution as is and decrease my file size. As a rule of thumb, I decrease (or increase depending on the movie and compressibility check) the size until either my percentage reaches 50 or my B/(P*F) reaches .18. I never go below either value unless the B/(P*F) is over .30 and the % is still less than 50%. Then I keep the B(P*F) at .30 as long as the % is 40% or more.

Here you can see I decreased my file size from 700 MB to 560 MB to get my B/(P*F) down to .18. (If my percentage had reached 50 before my B/(P*F) had reached .18, I would have stopped at 50% and kept my B/(P*F) at whatever it was.)

With this example, I had to decrease my percentage and B/(P*F). Some movies require increasing these values. To do this you can either increase the file size by pressing the up arrow or decrease the output resolution by moving the slider to the left. If you decrease the output resolution, remember to keep the Aspect Error close to 0 and to not go below a Width of 512. You may still need to increase the file size to get the values in range.

If you were going to put the movie on a CD, you would want to increase the resolution and keep the file size at 700 MB.

As you can see, by increasing the output resolution to 608x320 and still keeping the Aspect Error close to 0, the B/(P*F) has dropped close to .18.

Once you have your values set, it is time to encode.


Go back to the window that shows your video. Press the Save & Encode button. At the bottom of the Save .avs screen, press the Save & Encode button.

The Save Frameserver screen displays. Here you can change the title of your movie if you want. I like to have the rating included in my titles. Press Save.

Next, the Save Credits Frameserver screen will display. Press Save to continue. Next, the Control Panel screen will display defaulting to the Audio 1 tab.

Select Just Mux then go to the DivX 5 tab.

Select the Delete Intermediate Files box to save on disk space then press the Add Job to Encoding Queue. The following screen displays.

If you have only one movie to encode and you want to start it now, press Yes. Otherwise, if you have more than one movie to setup or you want to start encoding later, press No. The Gordianknot screen will display, defaulting to the Encoder tab.

Here I selected "No" to start encoding now and as you can see in the top part of the screen, it has been added to the queue. If you want your PC to shutdown when encoding has finished check the Shut down Windows box. At this point, if you wanted to add more movies to encode, start by selecting the Bitrate tab, opening the next .d2v project file and following the same steps as before.

When you have added all the movies you want to encode, press the Start Encoding button.

When the Encoding has completed, the DivX movie, with the extension of .avi, will reside in the Projects folder. It typically takes anywhere from 2 1/2 to 3 1/2 hours per movie depending on the Total File Size and the speed of your computer. It took 2 hours and 40 minutes to encode One Hour Photo on a 1.6 GHZ processor. On a 3.0 GHZ processor it takes about the same amount of time to encode the move as the movie's normal playing time.

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