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Are there differences in rendering?

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  • Are there differences in rendering?

    Normally, when I need to render a section, I hit Shift Q and have the rendered section available on the time line. Occasionally, the playback will still have a hard time after I've done this and have a "rendered" area. When that happens I will render using one of the other options and the "strength" of the rendered area seems improved as the section will then play through.

    Are there different rendering methods used whether or not the resulting rendered area is shown on the time line? Which is the "best" method to choose from the drop down menu for playback reliability? Does re-rendering a "rendered" section do anything?

    Curious mind and all that...
    Documentaries and Art Projects
    Hudson Valley, NY

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  • #2
    if u remove the material from under the render it should play smoothly

    try muting the tracks under the render and see if that helps

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    • #3
      yes, that does help...but i find i don't need to mute or remove the clip when doing "other" rendering options.
      Documentaries and Art Projects
      Hudson Valley, NY

      i7 8700K @ 3.70 Ghz/16 gb RAM
      windows 10
      284 gb SSD boot drive
      2 TB work disc
      2TB storage disc
      EDIUS 9.52.6031
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      • #4
        Tobe can you Please tell me which effect you are using?
        You should not have to mute the track.
        Steve

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        • #5
          just dissolves from one still to another (relatively high rez...still camera 12 mb pix) with layout zooms or fades on each. The hardest time is during the dissolves (no surprise there) ...I'll have to do some more tests to see exacly what might be involved...for instance are they all jpgs when the rendering is poor? My guess is yes...Probably mean lots of pix to be re-saved as bmps or tgas... :-)

          I believe that when I use my scans (.bmps) things go better...
          Tomorrow I'll try to see if I can spot the times when this happens.

          Still curious if there are various "strengths" of rendering?
          Documentaries and Art Projects
          Hudson Valley, NY

          i7 8700K @ 3.70 Ghz/16 gb RAM
          windows 10
          284 gb SSD boot drive
          2 TB work disc
          2TB storage disc
          EDIUS 9.52.6031
          Many external project hard drives

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          • #6
            Once you do a shift Q render that area should play realtime , provided that the render codec can play real time on your system.

            No strength it is a straight file creation which is suppose the play as top layer.


            can you post a screenshot of your timeline?
            Steve

            Get Support or the Latest version of EDIUS:
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            • #7
              What is your audio? Since Shift Q only renders the video, it could be something there.

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              • #8
                Even when a video clip on a higher track covers another video clip on a lower track- Edius still processes the video on the lower track EVEN if you can't see it on the output monitor... So rendering and placing on the timeline will STILL process the original video underneath the render.

                Either remove/mute the lower video OR use normal render which 'auto replaces' the original files on the fly

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                • #9
                  Hi Tobe.

                  What render format are you using? As Steve has said, this could be the problem. If you are using uncompressed for the renderer and your drive system is not fast enough to handle it, it would still skip and drop frames. Try setting something less demanding as the render format, like HQ or HQX, depending on your source footage. Sorry if I am pointing out the "bleeding obvious".

                  As for Mattie's observation, that seems very interesting as it would seem to be defeating the object. Have not noticed this my self, crl alt q is all I usually do during the editing process and everything plays fine. I will check this again on a complex edit with lots of tracks. The render is supposed to generate an invisible or virtual track that just combines all the elements in the I/O area into a single file, whether they need rendering or not. Then as Steve said, it is played as if it where the top track.

                  If a complex piece is going to be played with parts that are still being editied, I sometimes do an export and re-import the part back into the timeline. This stops the piece from having to be re-rendered everytime another track or part is being played with, that crosses into it's part of the timeline.

                  Re-rendering a render just starts all over again on the section of timeline being used, and will re-use any of the original render as long as nothing changed in any given part of the original render area. It all depends on what parts overlap into other parts and what has moved or edited, in the good old days I think it was called "smart rendering".

                  Tobe, I know you know what you are doing, so please forgive me for pointing out what you already know.

                  Cheers.

                  Dave.

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                  • #10
                    Originally posted by Red Union Films View Post
                    Hi Tobe.

                    ..As for Mattie's observation, that seems very interesting as it would seem to be defeating the object. Have not noticed this my self, crl alt q is all I usually do during the editing process and everything plays fine. I will check this again on a complex edit with lots of tracks. The render is supposed to generate an invisible or virtual track that just combines all the elements in the I/O area into a single file, whether they need rendering or not. Then as Steve said, it is played as if it where the top track..
                    This extra processing is only when you ADD the rendered clip to the timeline as a new clip above the original footage.

                    Normal render and NOT add to the timeline is not affected.

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                    • #11
                      Originally posted by mattie View Post
                      This extra processing is only when you ADD the rendered clip to the timeline as a new clip above the original footage.

                      Normal render and NOT add to the timeline is not affected.
                      what is going on in the tracks below the rendered and added above clip?

                      Adorage perhaps? If so, I can confirm
                      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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                      • #12
                        Originally posted by mattie View Post
                        This extra processing is only when you ADD the rendered clip to the timeline as a new clip above the original footage.

                        Normal render and NOT add to the timeline is not affected.
                        Hi Mattie.

                        Thanks for pointing that out, although I can't say that I have noticed it.

                        Cheers.

                        Dave.

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                        • #13
                          Originally posted by mattie View Post
                          Even when a video clip on a higher track covers another video clip on a lower track- Edius still processes the video on the lower track EVEN if you can't see it on the output monitor... So rendering and placing on the timeline will STILL process the original video underneath the render.

                          Either remove/mute the lower video OR use normal render which 'auto replaces' the original files on the fly
                          This is not correct.
                          Steve

                          Get Support or the Latest version of EDIUS:
                          EDIUS support and Downloads

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                          • #14
                            Originally posted by mattie View Post
                            This extra processing is only when you ADD the rendered clip to the timeline as a new clip above the original footage.

                            Normal render and NOT add to the timeline is not affected.
                            I think you are mistaken here. I will try and provide you a quick example for proving this later, but I am off to catch a plane now.

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                            • #15
                              Many thanks for the interesting thoughts by all on rendering. I don't use any effects except standard Edius dissolves and fades. Later today I'll get back to the edit machine and see what I can see...I'll try to be very careful and pay attention to what I'm doing. Then I'll report back.

                              I believe my rendering format is always set to HQ fine...will double check that also.
                              Documentaries and Art Projects
                              Hudson Valley, NY

                              i7 8700K @ 3.70 Ghz/16 gb RAM
                              windows 10
                              284 gb SSD boot drive
                              2 TB work disc
                              2TB storage disc
                              EDIUS 9.52.6031
                              Many external project hard drives

                              Comment

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