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  • Scrubbing XDCAM EX MPEG2

    Hi. I have a project set to 1920x1080 50i. The video material was recorded on a JVC GY-HM600 - my chosen format is XDCAM EX (MPEG2 HQ), 35 Mbps (VBR), 1920x1080, 50i, 4:2:0.

    I am having problems scrubbing the material on my EDIUS v7.5 timeline. It's very jerky, even though the drive is a striped pair of disks. Normal playback is smooth. Never noticed it before, but I have previously always created Canopus HQ AVI files. Other 1920x1080 video formats seem to work fine, but NOT other MPEG2 1920x1080 50i material. Is the problem simply a facet of the MPEG2 GOPs? The MPEG seek checkboxes are all selected in EDIUS System Settings. I thought these were supposed to make GOP editing easier?

    My main desktop computer specs are below - which should be more than adequate. I have exactly the same effect on my laptop when playing a sample file located on my SSD.

    There is a sample clip here....
    https://www.dropbox.com/s/fds2ou38ua...15_01.MP4?dl=1
    Could someone please download this and see if they can scrub smoothly on a timeline OK. Thanks.
    Rick
    SPURFILM
    EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

  • #2
    I have seen that many times when users have accelerated seek disabled for MPEG and AVCHD in system settings, importer/exporter
    Anton Strauss
    Antons Video Productions - Sydney

    EDIUS X WG with BM Mini Monitor 4k and BM Mini Recorder, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro 21H2

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    • #3
      after testing your clip, I can see that scrubbing looks terrible with blended frames when view menu, pause field is set to frame, set to upper field and it is fine
      Anton Strauss
      Antons Video Productions - Sydney

      EDIUS X WG with BM Mini Monitor 4k and BM Mini Recorder, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro 21H2

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      • #4
        I can see that scrubbing looks terrible with blended frames when view menu, pause field is set to frame...
        Anton, many thanks for the suggestion. However, that is not the problem. It's set to "Upper Field", and as you say, "Pause Field" when set to "Frame" looks terrible. But that's a different phenomenon from what I am experiencing.

        I have examined the video "jumps" when scrubbing. They seem to occur every 12 frames, which is exactly the distance between MPEG2 I-frames. I am puzzled why you have smooth scrubbing and I do not. Any other ideas? Perhaps my accelerated seek is not functioning for some reason?
        Rick
        SPURFILM
        EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

        Comment


        • #5
          In fact, after turning off accelerated seek I can see there is no difference between the on and off states when scrubbing - suggesting that accelerated seek is not functioning. But why?
          Rick
          SPURFILM
          EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

          Comment


          • #6
            One thought, I imported all the video files into a bin by right-clicking and selecting "Add File". Will the MPEG accelerated seek files be created under these circumstances? Where are these files stored, so I can take a look and see if they have been sucessfully created?
            Rick
            SPURFILM
            EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

            Comment


            • #7
              Originally posted by spurfilm View Post
              In fact, after turning off accelerated seek I can see there is no difference between the on and off states when scrubbing - suggesting that accelerated seek is not functioning. But why?

              did you restart EDIUS after making the change?

              also, once accelerated seek is enabled, the clip needs to be reloaded to the bin and at this stage, EDIUS creates the seek file

              your clip scrubs smooth here but not as smooth as my XDCAM MXF files

              yours are mp4 files and are depending on QT player, do you have the latest
              Anton Strauss
              Antons Video Productions - Sydney

              EDIUS X WG with BM Mini Monitor 4k and BM Mini Recorder, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro 21H2

              Comment


              • #8
                also, your JVC files are open GOP, open GOP files are not ideal for scrubbing or editing

                JVC always had strange issues with their files, starting from the DV days
                Attached Files
                Anton Strauss
                Antons Video Productions - Sydney

                EDIUS X WG with BM Mini Monitor 4k and BM Mini Recorder, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro 21H2

                Comment


                • #9
                  also, seek files are not generated for your type of file, I checked and non are generated

                  normally the get generated for mpeg2 and avchd files, your files are not in that category
                  Anton Strauss
                  Antons Video Productions - Sydney

                  EDIUS X WG with BM Mini Monitor 4k and BM Mini Recorder, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro 21H2

                  Comment


                  • #10
                    Anton, thanks again. A lesson for the future, I think. Always go MXF.
                    Rick
                    SPURFILM
                    EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

                    Comment


                    • #11
                      May be rewraping to other file container (.MOV) could help. Try CipToolz Convert V2 http://hdcinematics.com/convert-V2.html

                      On Edius 6.5 both the original clip and the rewraped version scrubs fine or more exactly; the scrubbing looks fine to me ...
                      1st System: Edius 9, TMPGEnc VMW6 & AW5, ASUS P9X79, Core i7-3930K, Intel SSD 330 180GB, GeForce GTX 570, Corsair Graphite 600T Mid-Tower, Sony Optiarc AD-7280S, 16GB RAM, 12TB , Canopus ADVC-300, 2nd System: Edius 9, HP ZBook 17 G3, i7-6700HQ CPU @ 2.60GHz, 16GB RAM, 512Gb SSD, 1 TB HDD. Cameras: Panasonic DVX200, Fuji X-T3, Sony RX10

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                      • #12
                        the scrubbing looks fine to me....
                        Ok, thanks. Well it's just about acceptable for me, but I prefer a really smooth scrub. Thanks for the idea of changing the wrapper to MOV but the effect is exactly the same - slightly choppy scrubbing. I have decided to bump everything up to GV AVIs. They scrub perfectly.
                        Rick
                        SPURFILM
                        EDIUS WG 9.51.5532 Tower, Win10 Pro 64-bit on 512GB Samsung 850 Pro SSD, Nanoxia Deep Silence Case, Asus X99-S Mobo, Intel i7-5820K Haswell-E @ 3.30GHz O/C to 4GHz, 32GB Crucial DDR4 @ 2133MHz, NVIDIA GeForce 980 Ti 6GB + dual 1920x1080 monitors, BM Intensity Pro 4K + 3840x2160 preview monitor, Storage: 16TB WD RED RAID0.

                        Comment

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