5 Replies Latest reply on Jul 16, 2012 1:40 AM by Pierre Devereux

    Help with footage and quailty questions

    Pierre Devereux Level 2

      Hi Guys,

       

      I was wondering if someone could point me to a forum that would be able to answer the following few questions (as they are not directly After Effects related):

       

      (First a short intro):

       

      I have been working with after effects for a while now, and feel that I am very confortable with the basics. I can pull off a few nice effects, and I am starting to get some better results with the compositing that I am doing. I am starting to move on to slightly more advanced techniques, and am having a great time as I go along. The problem, is that in my company, I fill the shoes of compositor, Camera man, and lighting guy. Since none of those fields are my particular field of expertise, there are billions of questions I am researching and finding answers to each day. I am now at the point, where I want to start working on individual scenes, and export what we would love to call "Final Quality" tests for approval. so this brings me to my question:

       

      When I record footage, the highest possible resolution I can with the camera I use (Panasonic AF101) feeding into a Atomos Samurai I get a footage file, that take 22MB for every second of play. Since I am using the ProRes codec that comes with the Samurai for now, I am assuming this in itself is compressed.

       

      When I feed this footage into After Effects, where can I go to read up what it is that After Effects does with the file? Does it uncompress it? Does it work on the file within its compressed state? When i take a sj=hot of a background, and I add another shot of a character (keyed out and ready) and I place the character in the background and preview 5 seconds, what am I looking at? Final quality, or an intermediate step.

       

      I see that I can render this out lossless, and that increases the storage space a lot (and that, I guess is a good thing!)

       

      So, in closing, I know this is the After Effects forum, but I am hoping that some of you have experience in gathering footage as well as editing it - and can either provide an answer, or hopefully invite me to a filming forum where I can bable on to my hearts content! :-)

       

      I really want to get to a point, where I am assured that I am filming at the highest possible quality, Working at the highest quality, and exporting the best possible HD quality final product that I can - if anyone can provide some light at the end of this (seemingly) terrible omplicated tunnel, I would really appreciate it.

       

      Thank you

       

      Pierre

        • 1. Re: Help with footage and quailty questions
          Dave LaRonde Level 6

          ProRes is a very good codec.  You can re-render it six generations deep before you see any kind of image degredation.  I don't know ANYBODY who would re-render six generations deep -- they would instead prerender to a lossless intermediate codec for further work in AE, then either render to the specified delivery codec or again to a lossless codec.

           

          You can set the codec used for RAM Previews in the Templates section of AE.  It should default to Losless: if you haven't messed with it, you're seeing the best possible quality

          • 2. Re: Help with footage and quailty questions
            Andrew Yoole MVP & Adobe Community Professional

            Pierre Devereux wrote:

             

            When I feed this footage into After Effects, where can I go to read up what it is that After Effects does with the file? Does it uncompress it? Does it work on the file within its compressed state?

             

            Yes.  After Effects decompresses everything in order to process it, even if you don't adjust it or apply any effects.

            When i take a shot of a background, and I add another shot of a character (keyed out and ready) and I place the character in the background and preview 5 seconds, what am I looking at? Final quality, or an intermediate step.

            If AE is set at full resolution in the preview window, the resulting previews will be full quality.   Be warned that AE previews are not interlaced.  Only renders from the render queue process fields correctly.

            • 3. Re: Help with footage and quailty questions
              Pierre Devereux Level 2

              Thanks guys.

               

              Ill spend some more time with the camera and Samurai then to make sure I am getting the best possible quality to the device. Then Ill start reseraching better workflows. Almost all of our shots will have characters composited in, and there promises to be many action sequences with special effects that ill have to add, so there should be no end of research happening from this side! :-)

               

              Thanks once again, and ill send an update when I figure out if it was just me that did not like the quality, or if I had some settings fiddled with ( being an ex Microsoft Server engineer, I make no excuses for my fiddly habits - I must remind myself not to change settings jsut to "see what it does!" :-)

               

              Cheers

               

              Pierre

              • 4. Re: Help with footage and quailty questions
                Pierre Devereux Level 2

                I do have one more question around this though:

                 

                When i record a scene, the largest file size i can generate is 27.6MB per second (megabytes), Yet some of the tutorials i have seen, specifically around large file sizes, puts there 17 second footage at 14GB - which, if my math is correct (and I dont promise it is!) puts their data at around 80MB per second. How did they manage this, or did they take the footage into a NLR already, and render the larger file out? As I have noticed, that i can capture at a certain size, and with the lossless settings in AE, generate a bigger file.

                 

                Thanks

                 

                Pierre

                • 5. Re: Help with footage and quailty questions
                  Pierre Devereux Level 2

                  Ok,

                   

                  I promised I would post again if i figured this out - I wish I had given that more thought, as the issue, turned out to be me, being completely silly.

                   

                  BUT, in the hopes that I am not the only crazy beginner out there, here is what I found ( I hope someone else can benefit from this hard lesson)

                   

                  CHECK YOUR MONITORS RESOLUTION SETTINGS!

                   

                  Yes, that was my issue. when I first purchased the HD LED TV, I used an old interim HDMI cable that was far from ideal. It caused many issues with my display setup, and I had to eventually put it on a very low resolution to get it to work. As a result, when I got the proper HDMI cable, and have been using that one ever since, for some reason , and I wont even attempt to make excuses, it completely slipped my mind to reconfigure the resolution of the T=HD LED TV back to 1080p.

                   

                  Sigh, anyway, the quality coming form the AF101 and the Atomos Samurai through to AE now, is perfect!

                   

                  Next challange - figuring out the AF101 shallow depth of field - I need to find out what settings onthe camera will allow me to get more of the scene into focus.

                   

                  Thanks for the help guys, I hope that by reading about this silly mistake, others will be able to avoid it! :-)

                   

                  Pierre