11 Replies Latest reply on Nov 5, 2013 1:11 AM by duduche_1024

    image jerk in mts

    duduche_1024

      I'm working with Premiere Elements 9.0.1 in HD1080i, export in MPEG2 1920x1080i 25 (in standard configuration). I've a picture (still image.png 4080x4080) with a linear movement. In the .mts file there are some few "jerks" during this movement : when looking more closely, it appears that at each frame the picture moves regularly (7 pixels for instance), then for one frame doesn't move, then for the next one moves twice ( 14 pixels), which gives the "jerk" when looking the video. This is only in the .mts file, is repetitive (exactly the same for a new export) but not regular (e.g. not linked with the speed of movement - and for some movements it's perfectly OK). I've just noticed that jerks appears more frequently at a multiple of 12 frames : could be in relation with the GOP ?

      What could be done ?

        • 1. Re: image jerk in mts
          A.T. Romano Level 7

          duduche_1024

           

          I am going to ask for clarification on this one.

           

          You appear to have a Premiere Elements 9.0/9.0.1 Timeline which contains at least one still .png 4080 x 4080 image. How many of them, one?

           

          What is your project preset for this project?

           

          For now, I will assume that you are working on some version of Windows. If you is Windows 7 or 8 64 bit, then your Premiere Elements 9.0/9.0.1 is running as a 32 bit application in the 32 bit compatibility mode of the 64 bit system and as such have all the resource limitations of 32 bit. If Windows 32 bit, the Premiere Elements is a 32 bit application running in the 32 bit system with the resource limitations of 32 bit. Bottom line: what is the rationale behind introducing a grossly oversized png (4080 x 4080 pixels) into a project whose export will result in a 1920 x 1080 file?

          Besides oversized, we are talking different aspect ratios.

           

          Reminder, Premiere Elements 9 and earlier blocks the import of images beyond a certain huge size. Just because the program permits import up to that defined limit does not mean you should under the circumstances.

          http://forums.adobe.com/thread/624979

           

          So, I am asking for more details to make sure that I am not misinterpreting your issue. A just in case note...thinking in terms of 4:3 and 16:9, for SD the suggested not to exceed is 1000 x 750 pixels and for HD 2200 x 1238 pixels.

           

          Rather than "GOP", I am thinking more in terms of computer resource, image sizing, and project settings. Consider lowering the pixel dimensions of the png(s) and determining the impact on your issue.

           

          Looking forward to further details.

           

          Thanks.

           

          ATR

           

          Add On...please check the file extension of your Premiere Elements export. Premiere Elements does not export a file with a file extension of .mts. It does with .m2t.

          • 2. Re: image jerk in mts
            duduche_1024 Level 1

            Thanks for your help.

            First of all, you're right : it's really m2t, not mts (writing mistake)

            To simplify the problem originally seen, I've made tests with only one still image, and nothing else.

            This so large image is a map, and I move it (at scale 1, whithout any resizing or auto adjust) to show a travel.

            Preset : PAL-AVCHD-Full HD 1080i 25 5.1 channel. Under Windows 7 - 64 bits

             

            As you suggest I've changed dimensions and ratio (3264x1836 then 2200x1238) : some jerks still appears.

            The mouvements I made is very simple :

            in a sequence of 7 seconds : for 2s no movement, for 3 s moves down 300 pixels, for 2 s no movement --> some jerks during mvmt

            if I change for 400 pix, becomes perfectly OK

            but if I add some mvmt before or after, results are differents

             

            I'm lost...

            • 3. Re: image jerk in mts
              A.T. Romano Level 7

              duduche_1024

               

              Please check out the following to see if I am interpreting your question correctly.

               

              Are you doing your keyframing of the map in the Premiere Elements 9.0/9.0.1 Properties Palette/Motion Panel Expanded with the keyframes shown as per the screenshot?

               

              MapKeyframing.JPG

               

              When you mentioned 300 down, I am assuming that was the Position reading to the right in the Motion Panel expanded.

               

              The icon circled in red gains you access to the keyframe display to the right.

               

              After you hit toggle animation (Timeline Indicator at 00;00;00;00, manual keyframes can subsequently be made by clicking on the diamond between the right and left pointing triangles at the Postion Level.

               

              00;00;00;00 first Position Keyframe at 969.3, 155.9, Linear Temporal Interpolation was removed.

               

              about 00;00;01;15 Position Keyframe at 969.3, 155.9 Manual, Right Click keyframe, Temporal Interpolation, Bezier.

               

              about 00;00;02:00 Position Keyframe at 969.3, 300 Manual, Right Click keyframe, Temporal Interpolation, Bezier.

               

              Render Timeline.

               

              Export Share/Computer/MPEG2 1920 x 1080i25 as per your requirement.

               

              Does the above give you better, same, or worse results.

               

              I road tested it at pre and post Premiere Elements 9.0/9.0.1 Share/Computer/MPEG with preset MPEG2 1920 x 1080i25 as you have been using. All look smooth.

               

              Please review and then we can decide what next.

               

              Thanks.

               

              ATR

              • 4. Re: image jerk in mts
                duduche_1024 Level 1

                With exactly what you explain (and it's as I do usually) and same parameters, result is not good :

                from 00:00:01:15 to 00:00:02:00 that makes 10 frames and I have no movement at frames 2, 4, 5, 7

                (10 frames is very short, then I examine the .m2t file frame by frame, by putting it in the timeline of Premiere)

                 

                I took a different still image (dimensions), I changed for linear temporal interpolation, from PNG to JPG, to external HDD : always the same, always the 'freeze' at exactly the same frames.

                Then at last, I just changed 155.9 to 140, in order to have 300-140 = 160 --> 16 pix/frame, result is OK ! also OK with linear or with bezier, also OK with large or 'small' still image.

                 

                If you understand something...

                In any case thank you so much for having spent time for that.

                • 5. Re: image jerk in mts
                  A.T. Romano Level 7

                  duduche_1024

                   

                  Thanks for the follow up and the good news that you have worked out the keyframing of the position property details to give you acceptable movement of your map. Good job.

                   

                  Continued success with your projects.

                   

                  ATR

                  • 6. Re: image jerk in mts
                    duduche_1024 Level 1

                    Yes, but I've just one solution for a particular case, not a global solution and no understanding of the matter.

                    I've made many tests from which my only conclusion is that the 'jerk' problem is linked with mpeg compression, and help of specific expert(s) in necessary.

                    I will open a new question with details of all my tests.

                    Title will be : "Jerks on still image motion in .m2t exported file"

                    • 7. Re: image jerk in mts
                      Steve Grisetti Adobe Community Professional

                      Please do not start a new topic. The background in this thread are vital to our continuing to work with you.

                       

                      Meantime---

                       

                      First, I'd recommend you reduce that photo size to 2000x1500 pixels. You'll get less of the jiggliness because it will be closer to the resolution of the video (which is 1920x1080).

                       

                      Then, ensure that your project settings are set for 1920x1080. You can check this under the Edit menu.

                       

                      If your project is not set up for 1920x1080, you'll need to restart your project. Version 9 does not let you change project settings mid-project. When you start a new project, be sure to select a project preset like Full AVCHD 1920x1080.

                       

                      Finally, right-click on your photo on your timeline and select Field Options, and set your Field Options for Flicker Removal.

                       

                      Then, just for good measure, right-click on the photo again on your timeline and make sure the Frame Blending is checked.

                       

                      As for your output, what do you plan to use your output for? To burn a BluRay disc? To post to Youtube? To use in another project? Your final use will determine what the best output option is -- and certainly may NOT be AVCHD M2T.

                      1 person found this helpful
                      • 8. Re: image jerk in mts
                        duduche_1024 Level 1

                        Thanks for your answer.

                        I opened a new topic because the title was not good, and to re-start on clearer information.

                        Reduction of photo size has already been tested, without result. Setting are OK also.

                         

                        I've just tested you suggestion of Flicker removal : it has a good effect (number of jerks divided by 2 approx). But it's not enough...

                         

                        Why do you say that m2t is NOT good ?

                        • 9. Re: image jerk in mts
                          Steve Grisetti Adobe Community Professional

                          Because it depends on what you're using it for and how you're viewing it.

                           

                          AVCHD M2T files are interlaced, and are not going to look good when viewed on a computer or displayed on YouTube.

                          • 10. Re: image jerk in mts
                            duduche_1024 Level 1

                            I use AVCHD M2T because it's the only one available for export under Premiere Elements 9.

                            Is 1080p available for newer versions ? or is it possible to add it in PRE 9 ?

                            • 11. Re: image jerk in mts
                              duduche_1024 Level 1

                              I confirm that:

                              WITH a reduced still image: 2448x2448 (60% of my initial one)

                              AND Flicker Removal as field option

                              it works perfectly : all movements are perfectly smooth.

                               

                              The two above conditions are necessary.

                              Just for info, I've not tested intermediate dimensions, between 4080 (not good result) and 2448 (OK)

                               

                              Once again, thanks for your efficient help on this matter.