Latest post Wed, Jun 22 2011 7:15 PM by almost40_3girls. 16 replies.
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  • Mon, Jun 13 2011 8:05 PM

    SD and HD on same timeline

    Hello all!

    I have a project to edit where I have both SD (16:9) and Hd 720p. The output will be DVD.

    Would it be best to place the clips on a SD timeline and down convert the HD or use a 720p timeline and upconvert the SD. Of course I want the best DVD video quality and was not sure which way would give me that.

    I would use the correct filter to up or down convert based on the timeline.

    Thanks!

    Jeff

    MC5.0.4, Panasonic AG-AC130 HD Cam & DVC30 SD Cam, Sager 9170 laptop, 17" 1920x1080, i7 3rd gen, 8gb ram, dual Hd's, GTX675m graphics. Emachine... [view my complete system specs]

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  • Mon, Jun 13 2011 8:16 PM In reply to

    Re: SD and HD on same timeline

    If the output will be SD then it's not important.

    Only when it is HD output the difference will be more noticeable.

    At this state, what will happen is the downgrade of the 720p footage.

    If I was you I would add Pan and Scan's to match the 1.25 AR to that of the 1.77 AR

    of the HD on an SD project.

    If it is a 1024x576 output then the AR is the same so there is no need for Pan and Scan.

    Just make sure that the export even with SAS goes as 16:9 and not native format.

    Because if you do export as native it will go out as 4:3 and you will have to

    force the 16:9 to the encoder for the DVD.

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  • Tue, Jun 14 2011 5:14 AM In reply to

    • mjolnarn
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    Re: SD and HD on same timeline

    almost40_3girls:

    I have a project to edit where I have both SD (16:9) and Hd 720p. The output will be DVD.

    Would it be best to place the clips on a SD timeline and down convert the HD or use a 720p timeline and upconvert the SD. Of course I want the best DVD video quality and was not sure which way would give me that.

    I would use the correct filter to up or down convert based on the timeline.

    As Avid doesn´t do a good downscale of it´s own of your 720 P media, which, by the way, has the same size relation, 16 : 9  as your SD media, I would keep the HD resolution and work in a HD project.

    If your SD media is interlaced I would propably begin with to deinterlace all of that media, then send out a QT ref after rendering, still with your project in SD mode however.

    Then switch project mode to 720 p and import that Qt ref back into your project to a DNxHD using settings "  do not resize smaller images "

    Assuming that you have the BCC effects installed on your system I would then add Boris Uprez to the clips and use that filter to upscale.

    This is a render intensive and timeconsuming workflow however, if you only have a couple of 720P clips I would export those out of a 720P project as DNxHD and reimport those files back to your project now in SD mode, the downscaling function in Avid seems to work better when you are importing clips.

     

     

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  • Tue, Jun 14 2011 8:54 AM In reply to

    • etant1
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    Re: SD and HD on same timeline

    mjolnarn:

    If your SD media is interlaced I would propably begin with to deinterlace all of that media, then send out a QT ref after rendering, still with your project in SD mode however.

     

    What's the best way to deinterlace?

    i put timewarp one 720P clip > Source : progressive > Output : interlaced .

    But it seems there is no change ..

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  • Tue, Jun 14 2011 10:39 AM In reply to

    • BarkinMadd
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    Re: SD and HD on same timeline

    etant1:

    i put timewarp one 720P clip > Source : progressive > Output : interlaced .

    But it seems there is no change ..

    ? If you have a 720p clip, it's already 'deinterlaced' (its progressive). What you describe is converting your progressive clip to interlaced. Did I mis-interpret your post?

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  • Tue, Jun 14 2011 11:07 AM In reply to

    • etant1
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    Re: SD and HD on same timeline

    Yes, you're right, I meant "converting progressive clip to interlaced".

    I do not know if this is related but when I use materials that do not Similar to the project (eg, in SD project, use 720P clips ). Clip flicker especially in thin white lines or bright Areas ..
    What I did today, I opened a project by the values ​​of the clip (eg 720P), imported the clip, I opened the project SD> "open bin" > put the 720P clip into SD project bin. This solved the problem of flicker . I'm afraid they will return when I will transcode to 720p clips. (Since I have to do consolidate for project, avid does not allow transcode mix clips) ..I thought I might solve the problem of jitter by converting the material 720 P to interlaced, But that does not fix the problem   .. 

    I also thought through the video conversion software to convert the clip 720P to 720 * 576 SD but it also did not solve the problem of jitter ..

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  • Tue, Jun 14 2011 11:31 AM In reply to

    • mjolnarn
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    Re: SD and HD on same timeline

    etant1:

    What I did today, I opened a project by the values ​​of the clip (eg 720P), imported the clip, I opened the project SD> "open bin" > put the 720P clip into SD project bin. This solved the problem of flicker .

    This is a typical situation where Avid Mix and Match functions works real well, no need to do anything more than that.

     

    etant1:

     I'm afraid they will return when I will transcode to 720p clips. (Since I have to do consolidate for project, avid does not allow transcode mix clips) .

    As you now are working in a SD project your transcoding should of course als be done as SD, I suggest Avid 1:1 to get the best results

     

     

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    Tomas 

     

  • Tue, Jun 14 2011 2:18 PM In reply to

    Re: SD and HD on same timeline

    mjolnarn:

    As Avid doesn´t do a good downscale of it´s own of your 720 P media, which, by the way, has the same size relation, 16 : 9  as your SD media, I would keep the HD resolution and work in a HD project.

    I agree.   Avid DVD, for example, does a much better HD-->SD downconvert than Avid MC.    Plus, as Blu-ray players, burners, and disks are getting cheaper everyday, why not preserve the ability to go back and burn your projects in HD in the future?

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  • Tue, Jun 14 2011 5:37 PM In reply to

    Re: SD and HD on same timeline

    Thanks for the replies and the plan to work on. I will go with importing my SD material in a SD timeleine and doing a QT Ref otuput and then bringing that into a 720p timeline and edit on it.

    I will be using Avid DVD for the media creation so it is good to know it does a goods job with the downconvert. I have done 1 other project with just 720p and it looked good.

    Jeff

    MC5.0.4, Panasonic AG-AC130 HD Cam & DVC30 SD Cam, Sager 9170 laptop, 17" 1920x1080, i7 3rd gen, 8gb ram, dual Hd's, GTX675m graphics. Emachine... [view my complete system specs]

    Created Design Video - "Video for the common man"

  • Wed, Jun 15 2011 5:39 AM In reply to

    • mjolnarn
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    Re: SD and HD on same timeline

    Good luck with this Jeff, this is the same workflow that I use myself, you might want to render your SD project to Avid 1:1 before sending out that QT ref

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    Tomas 

     

  • Wed, Jun 15 2011 6:15 PM In reply to

    Re: SD and HD on same timeline

    I think I am going to need more hard drive space......SD to Avid 1:1, isn't that uncompressed?

    Jeff

    MC5.0.4, Panasonic AG-AC130 HD Cam & DVC30 SD Cam, Sager 9170 laptop, 17" 1920x1080, i7 3rd gen, 8gb ram, dual Hd's, GTX675m graphics. Emachine... [view my complete system specs]

    Created Design Video - "Video for the common man"

  • Wed, Jun 15 2011 6:31 PM In reply to

    • mjolnarn
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    Re: SD and HD on same timeline

    almost40_3girls:

    I think I am going to need more hard drive space......SD to Avid 1:1, isn't that uncompressed?

    Jeff

    Not SD 1:1 Jeff, it´s about the same as DNxHD 185

    edited.  and to clarify, yes, it is uncompressed but will take up about the same space as DNxHD 185

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    Tomas 

     

  • Mon, Jun 20 2011 8:25 PM In reply to

    Re: SD and HD on same timeline

    I think I may be missing a step in this.

    I have the SD timeline completed and did a QT Ref output. When trying to import that to a 720p project I get the message the framerate is wrong.

    What am I missing to bring this into my 720 project?

    And on the flip side, can I import the 720p material into the SD project or is there a middle step.

    Thanks for the clarification,

    Jeff

    MC5.0.4, Panasonic AG-AC130 HD Cam & DVC30 SD Cam, Sager 9170 laptop, 17" 1920x1080, i7 3rd gen, 8gb ram, dual Hd's, GTX675m graphics. Emachine... [view my complete system specs]

    Created Design Video - "Video for the common man"

  • Tue, Jun 21 2011 5:18 AM In reply to

    • mjolnarn
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    Re: SD and HD on same timeline

    Jeff, what was your render settings from your SD project.

    When you play the QT ref using Quicktime and have Quicktime info turned on, what does it say about it.

    edited ..  also try with a test on a small part to do a Video Mixdown to SD 1 :1 to see if that works

    Mac: 17" Macbook Pro i7 2,66 ghz with 8Gb Ram, 500gb 7200rpm drive___ PC_NEW Win10 Pro Mbo Asus Rampage IV Black CPU Ivy Bridge-E 4960X ( = 12 x 4... [view my complete system specs]

    Tomas 

     

  • Tue, Jun 21 2011 7:24 PM In reply to

    Re: SD and HD on same timeline

    Thanks Tomas, I was able to import the QT Ref of my SD project into my 720. I put it on the time line and applied the BCC Uprez effect and left for work this morning, we'll see how it is when I get back.

    Jeff

    MC5.0.4, Panasonic AG-AC130 HD Cam & DVC30 SD Cam, Sager 9170 laptop, 17" 1920x1080, i7 3rd gen, 8gb ram, dual Hd's, GTX675m graphics. Emachine... [view my complete system specs]

    Created Design Video - "Video for the common man"

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