Learn how to use media and scratch disk preferences in Adobe Premiere Pro.
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Media is a new Preference for Premier Pro 2.0. When you bring an audio in Premier Pro, it actually conforms the audio into a format that is a lot easier for the application to use. In certain instances, it won't conform, but for all intents and purposes, the Media area is important for when the audio does conform.
When it does conform, it puts it into this Media Cache. The Media Cache is located in a scratch disk that you specify. The Media Cache Database, however, is located in a separate place. You can browse your Desktop or your hard drive to place it in an exact folder. Now the Media Cache Database looks at all of the files you have conformed and references where they are on disk. It does this, so that if you import the same file into multiple projects and you have a conform file for it already, instead of conforming a new file for it, it says "hey! I already conformed that file. It's actually over here" and it points the application over there to look at the conform file, so it doesn't have to conform it again.
The button below says Clean and when you press this button, it actually goes through the database and checks the path of every file that it has listed in a database. So say, you deleted a bunch of files off of your drive, but you Media Cache is in a separate location. Instead of deleting the entire Media Cache, you only want to get rid of the conform files associated with what you took off your drive. If you click Clean, it looks through the path of all those files, it says, "I can't find this file, this file and this file and because I can't find it on disk, I am going to go ahead and throw those conform files away." So a real quick, easy thing to do after you have thrown away projects is to go to your Preferences>Media>Clean the cache.
Just below the Media Cache Database, you have Display Media Timecode in Source Frame Rate and In/out points show media offset. We are going to get to the In/out points show media offset in the next lesson. Display Media Timecode in Source Frame Rate, if this check box is turned on and you capture something, say, that has non-dropped frame timecode and your project is displaying dropped frame; if you click this on, whenever you open that clip in the source monitor, it will display with non-dropped frame timecode. If you click it off, it will display with the dropped frame converted value of non-dropped frame timecode, which should be identical. So if you are making cuts, the cuts will have exact accuracy in both timecode formats, but when this check-box is turned on, it retains the original frame rate information of that file when it's open.
Scratch Disks is one of the most important Preferences that you can assign. This basically determines where all the video, audio, preview files, in other project oriented files are stored within your Premier system. If you are doing standard DV capturing, a 7200 rpm internal drive is going to be fine. Typically, most people will have their D drive or a V drive used primarily only for that DV editing. If that's the case, you are going to go ahead and want to specify that drive for your captured video and captured audio. On that same drive, you could put your Video Preview files, your Audio Preview files and your Media Cache.
The Media Cache, as I mentioned earlier, contained audio conform files and files that are generated by Premier, that are specific to media that's been imported in your project. So generally the rule of thumb is your faster drive should be used for capturing video. Additionally, if you are doing a lot of video rendering and you need to access those files quickly, they should be on a fast drive as well. If you are doing HD-SDI work or SDSDI work, these are going to need to be somewhat faster drives, for sure for capturing, but definitely for video preview and audio preview. For DVD Encoding, when you create the temporary files or the MPEG2 files used for the encode, you are just going to need to make sure that you have some space for it.
Now whenever I make a specific scratch disk for capturing, I will label it pretty clearly. It will be like Video Captures and it will be on drive D. I will make another folder that says, Premier Previews. That way I know that I could throw away my preview file folder because anytime I need those new previews, I just re-render inside of Premier, but I know also, if I delete Captured files, I am not going to be able to bring those right back.
So any of the files that Premier generates, be that Media Cache or Previews, those can be generated again. Your Captured Audios and Captured Videos are the files that you are going to keep better track of.