12 Replies Latest reply on Aug 29, 2016 2:04 PM by Ann Bens

    Still Images in Reused Video Vibrate

    The One True raywood Level 1

      I'm using PE 12. I am creating a new video. I import an old video. The old video contains still images. When I play the new video (either inside PE or as an exported video), the still images vibrate slightly. It looks like an interlacing issue, or maybe alternate frames are being blurred, at a rate of perhaps twice per second. Here is an example (starting at 8:17):

       

      A Wedding (July 6, 1996) - YouTube

       

      Whatever it is, it results in a flashing effect that detracts from the video.

       

      The Anti-Flicker Filter does not resolve the problem. Exporting each still image, deinterlacing them in an image editor (e.g., Photoshop), and then reassembling them in a new video, would require a great deal of work, as there are quite a few images. Smart Fix is available by right-clicking on the clip, and is apparently also invoked by answering Yes in response to the question, "Fix quality problems in clips?" when dragging the video onto the timeline. But while Smart Fix seems to fix the flickering problem, it also appears to degrade the images.

       

      Sometimes the layering trick solves the problem: add a duplicate of the old video in a separate track, lagging by one frame, and set both copies to half brightness. Sometimes it doesn't help.

       

      For some reason, a screen capture of the old video can be used in the new video without flickering. I'm presently using Debut for my screen captures. But I think this can't be good for quality, and in any case it is time-consuming and ties up the computer.

       

      Any other ideas?

        • 1. Re: Still Images in Reused Video Vibrate
          Steve Grisetti Adobe Community Professional

          That looks like an interlacing issue, most caused by something in the original video.

           

          What is the format and what is the resolution and frame rate of the old video you imported into your project? How was this video created?

          • 2. Re: Still Images in Reused Video Vibrate
            The One True raywood Level 1

            Steve, I don't have the details on the video imported into the YouTube example. But I am currently getting the effect when importing a video of stills, and this source video is 1280x720, bitrate 4256kbps (according to Windows Explorer > Properties > Details) or 2690kbps (according to MediaTab), 24fps, 8-bit progressive scan. I haven't tried producing any output; the flashing is evident even with playback within Premiere Elements 12. PE's Project Settings says the project into which I am attempting to import this video is 1920x1280, with a timebase of 29.97fps and a video display format of 30fps drop-frame timecode.

            • 3. Re: Still Images in Reused Video Vibrate
              Ann Bens Adobe Community Professional & MVP

              There is no instant fix as the problem is in the original video.

              You will have to do the images one by one.

              If the original video is 24 frames, so should your project.

              • 4. Re: Still Images in Reused Video Vibrate
                Steve Grisetti Adobe Community Professional

                Unless I'm missing it, a key piece of information is needed. You know what the original slides were and you know what your final output is -- but the key element is the specs of the video you output from your original slides and which you used as your source video in your new project.

                 

                Download the free program Media Info and use it to open this older video. It should give you information on this video's resolution, frame rate and audio and video codecs. (You can post the report here if you can't make sense of it.) Also, it is an MPEG, AVI, MOV, MTS, MP4 or what?

                 

                If this video is interlaced (and I'm suspecting it is) that would account for the strange "combing" effect you're seeing.

                • 5. Re: Still Images in Reused Video Vibrate
                  The One True raywood Level 1

                  Thanks for your persistence in helping me with this. I did post the details on the source video (see above), at least for another video where I'm having the same effect. I no longer have access to the source materials for the YouTube video. I'm sure the source for the YouTube video did not have those same specifications. Which leads to the prophylactic question: assuming interlacing is the culprit in diverse cases, can and should I just disable whatever it is that is producing interlaced output (which then sometimes gets reused in new videos)?

                  • 6. Re: Still Images in Reused Video Vibrate
                    Ann Bens Adobe Community Professional & MVP

                    You cannot fix this as its in the original. Is only the last images as the weddings stills are just fine.

                    As said before need to fix this one by one.

                    It changes every 1/2 second so just use the 1/2 good part second of the still and expand on the timeline.

                    • 7. Re: Still Images in Reused Video Vibrate
                      Steve Grisetti Adobe Community Professional

                      I've looked through this whole thread, raywood. I don't see the Media Info report on the video.

                      • 8. Re: Still Images in Reused Video Vibrate
                        The One True raywood Level 1

                        Sorry, Steve. I'm a little slow. I now have the Media Info report. This is not for the video shown on the YouTube link (above). For that one, I no longer have access to the source materials. This is for another video whose still photo content produces an alternating flashing effect, when imported into a video in Premiere Elements 12.

                         

                        General

                        Format                                   : MPEG-PS

                        File size                                : 89.4 MiB

                        Duration                                 : 4 min

                        Overall bit rate mode                    : Variable

                        Overall bit rate                         : 3 102 kb/s

                         

                         

                        Video

                        ID                                       : 224 (0xE0)

                        Format                                   : MPEG Video

                        Commercial name                          : HDV 720p

                        Format version                           : Version 2

                        Format profile                           : Main@High 1440

                        Format settings, BVOP                    : Yes

                        Format settings, Matrix                  : Default

                        Format settings, GOP                     : M=3, N=12

                        Duration                                 : 4 min

                        Bit rate mode                            : Variable

                        Bit rate                                 : 2 848 kb/s

                        Maximum bit rate                         : 4 000 kb/s

                        Width                                    : 1 280 pixels

                        Height                                   : 720 pixels

                        Display aspect ratio                     : 16:9

                        Frame rate                               : 25.000 FPS

                        Standard                                 : PAL

                        Color space                              : YUV

                        Chroma subsampling                       : 4:2:0

                        Bit depth                                : 8 bits

                        Scan type                                : Progressive

                        Compression mode                         : Lossy

                        Bits/(Pixel*Frame)                       : 0.124

                        Time code of first frame                 : 00:00:00:00

                        Time code source                         : Group of pictures header

                        GOP, Open/Closed                         : Open

                        GOP, Open/Closed of first frame          : Closed

                        Stream size                              : 82.0 MiB (92%)

                        Color primaries                          : BT.709

                        Transfer characteristics                 : BT.709

                         

                         

                        Audio

                        ID                                       : 192 (0xC0)

                        Format                                   : MPEG Audio

                        Format version                           : Version 1

                        Format profile                           : Layer 2

                        Duration                                 : 4 min

                        Bit rate mode                            : Constant

                        Bit rate                                 : 192 kb/s

                        Channel(s)                               : 2 channels

                        Sampling rate                            : 32.0 kHz

                        Compression mode                         : Lossy

                        Stream size                              : 5.53 MiB (6%)

                        • 9. Re: Still Images in Reused Video Vibrate
                          Steve Grisetti Adobe Community Professional

                          Can you link me to the "alternating flashy effect" this video produces so I can see it?

                           

                          Also, when you place this video as the first video on your timeline, do you see a yellow-orange "render" line along the top of the timeline above the clip?

                           

                          RenderLine.jpg

                          • 10. Re: Still Images in Reused Video Vibrate
                            The One True raywood Level 1

                            I'm not sure I've ever noticed that Render line. But I will be on the lookout for it.

                             

                            I'm having a hard time replicating the problem with this newer video input. I am sure it will recur; it has been cropping up repeatedly. But I will have to delay a more responsive reply until I encounter it again.

                            • 11. Re: Still Images in Reused Video Vibrate
                              Steve Grisetti Adobe Community Professional

                              If you'd like to post a clip of the video of the slideshow (the one you used as source footage for your recent project) to a site like Dropbox and then share it with me (my first name at the name of the web site Muvipix dot com), I'll be glad to play with it at my end. It may be easier than asking you to do all the research.

                              • 12. Re: Still Images in Reused Video Vibrate
                                Ann Bens Adobe Community Professional & MVP

                                Put it on Dropbox for everyone to share.