Using Quicktime Pro For Compression and Color Correction
Okay so now you will have to compress your uncompressed film. If you tried exporting it as an mpeg-4 in premiere or after effects you might get something similar to what I have below.
The image to the right is the uncompressed version. The image to the left is the mpeg_4 version. Pretty big friggin’ difference! This can be solved to some extent with quicktime pro.
*Quick note: This problem only arises in quicktime. You won’t get this lack of color in VLC media or windows media player.
Open your uncompressed movie in quicktime. Select file
1) In the Export dialogue box choose Movie to Quicktime Movie then select the Options button to the right.
2) Select settings and the Standard Video Compression Settings window will open.
Select the following:
Compression type: Mpeg-4 Video
Compressor Quality: Best
If you exported your uncompressed file correctly then your frame rate should already be 24 per second so you would just need to set your frame rate to current in the frame rate section. Make sure that your data rate (top right section) is set to automatic not restrict to.
Click okay, name your file (do not overwrite your uncompressed) and save it. Open your new mpeg-4 video, and select Windows then show movie properties . Select the Video Track and choose the tab under the video track labeled Visual Settings. At the bottom of the window is the Transparency dialogue box. Change it from its default Dither Copy to Blend. A Transparency level slider will appear. Slide it to 100%. To the bottom right of the screen is a box labeled High Quality. Check this box then go back to the transparency dialogue box and change it from blend to Straight Alpha. Close this box then save your mpeg-4 file. You will not see a difference until you close the file and reopen it. Now here is my new mpeg-4 (left) in comparison to my uncompressed file (right)
It’s not a perfect match but pretty close. Keep in mind this is just a display problem with the quicktime player. If you want to show this to friends and family outside of the senior showcase you can easily view it with VLC or Windows Media and you won’t have this problem. From what I understand all films in the senior showcase are burned onto a DVD then played at once but I’m not sure with which player so there is a 2 out of 3 chance it will be at the levels it was intended for and a 1 out 3 chance that it will be played just under those levels (barely).
A Note about Compression
Okay so compressing your file is important because if done incorrectly your film could end up looking like crap even if you use the right codec. I have done this plenty of times. An example would be the left picture in the first comparison. Notice how it lacks in color and quality? That’s because I compressed it wrong. Here are a few tips to make sure you compress your film correctly.
Ø Never limit your bit rate. If you are in premiere or after effects and are exporting your film uncompressed this option should never be checked. As a matter of fact if this option is even clickable then you have the wrong codec selected. Remember to export uncompressed select the animation codec of the quicktime format. The animation codec does not allow the limit option.
Ø When you are compressing your film through quicktime pro remember not have your data rate set to Restrict to. From what I understand this is the same thing as Limit Bit Rate in after effects and premiere. Your data rate should be set to Automatic (just above Restrict To).
Ø Check for the signs: Does you film have weird pixilated boxes here and there that weren’t present beforehand? Is your film much smaller in size after you tweeked the options in the Quicktime Pro movie properties and saved? If yes then you probably did something incorrectly that resulted in compressing your movie file more than intended. Go back and try again. Still getting the same problem? Check your uncompressed file and make sure that it is actually uncompressed. If it is not ridiculously huge (my two minute film is over a gig) or shows signs of pixilated boxes here and there then it isn’t uncompressed and you chose the wrong codec in your video editing program. Oops? No worries just go back to your video editing program and re-export with the correct format and codec. In premiere’s export window choose format: quicktime and video codec: animation under the video tab. In after effects’ render queue click output module: lossless to format: quicktime and then click the button Format Options… and choose video codec: animation.
Wait! I’m not getting crazy pixilation but my lines are aliasing!
If you have lines that look segmented in your film this isn’t a compression problem, your lines are just too thin. Even if you produced them in a vector program like flash video programs raster your images when making them into movie files. The only way to fix this is to go back to your source files and thicken your lines or brush strokes. In flash if you ink with the line tool or the pen tool your line width should never be below 2 if you want them to show up. Your brush strokes should not be thinner than a line with a width of 2 either.
Hope this helps. Good luck to you all! – Nana Boachie