Rendering in a different setting than the media ?

blakeharris wrote on 4/15/2016, 5:25 PM

What is the best way to approach in msp 13 if your media is fhd and you are going to render it as hd to open in dvd architect , should i match the media settings while working on the project in msp 13 and then render it as a lower quality or set the the media properties as the size I intend to render it as ?
Thanks,
BH

Comments

musicvid10 wrote on 4/15/2016, 7:08 PM

You may set your PROJECT properties as you wish.
Same as source will give you a smoother preview experience.
Same as output will give you an accurate look at the output formatting, which can be important.

Never change your Media Properties (I'm sure you didn't mean to say that).

blakeharris wrote on 4/15/2016, 7:37 PM

So you are recommending that I match my project peoperties to my media properties (fhd), then when i render it (in hd) by way of mc dvda mpeg2 :720x480 that would probably give me the best outcome?
Thanks for your help.

Jack S wrote on 4/16/2016, 4:38 AM

Hi. You infer that you will be rendering from Full HD to HD and then say that the HD will be 720x480. HD isn't 720x480, this is SD.
I've converted many projects from HD (1920x1080 - referred to as Full HD) to SD (in my case 720x576) and I've found the following workflow gives the best output (in my opinion). You will need to alter the PAL references to NTSC.

1) Open the HD project as normal then alter the project properties such that the Template is 'PAL DV Widescreen (720x576, 25.000 fps)', the Field order is 'Lower Field First', the Full-resolution rendering quality is 'Best', the Deinterlace method is 'Interpolate fields' and the 'Adjust source media to better match project or render settings' is checked.
2) Right-click on the first clip on the timeline and select 'Select Events to End'. Right-click the clip again, hover the mouse over 'Switches' and tick 'Reduce Interlace Flicker'.
3) Examine the timeline to determine if any clips have been Uprezzed or Stabilised using the BCC plugin. Such clips must have the plugin disabled (remove the tick from the plugin chain). With clips that have been stabilised it's best to use the SONY Stabiliser Media FX. Failure to carry out the above will result in weird effects when the project is rendered.
4) Save the project under a different name reflecting the changes made.
5) In the 'Make Movie/Save it to my hard drive/Advanced options' select 'DVD Architect PAL Widescreen video stream' and customise it to the required bitrate.
6) Rename the output file if necessary to reflect the changes - not really necessary because the SD file will be mpg whereas the HD file will be avc.
Some of the above steps will not be necessary for you because they apply for existing HD projects but you get the idea.
Hope this helps.

D7K wrote on 4/16/2016, 11:32 AM

sd = 480 x 640 (v x h)

Jack S wrote on 4/16/2016, 4:45 PM

I'm confused D7K. Surely you're quoting VGA resolution. According to Wikipedia, Standard Definition wrt television is either 720x480 (NTSC) or 720x576 (PAL).
I've converted many PAL projects to NTSC for relatives in the USA and I've always converted to 720x480 (and they've all displayed OK on TVs in the US).

EricLNZ wrote on 4/16/2016, 5:59 PM

@Jack s and D7K - don't forget PAR. 640x480 is the square pixel size as displayed by your TV. The source video file has 720x480 but with a PAR of .9091 so the image when displayed is squashed.

Yes I know it doesn't quite work out mathematically but none of the SD PAL or NTSC picture sizes do. They are all slightly wider than what they should in theory be.

D7K wrote on 4/16/2016, 7:11 PM

Here's from Wiki:

"SDTV" redirects here. For a television broadcasting network in Shandong Province, see Shandong Television.

Standard-definition television (SDTV) is a television system that uses a resolution that is not considered to be either high-definition television (720p, 1080i, 1080p, 1440p, 4K UHDTV, and 8K UHD) or enhanced-definition television (EDTV 480p). The two common SDTV signal types are 576i, with 576 interlaced lines of resolution, derived from the European-developed PAL and SECAM systems; and 480i based on the American National Television System Committee NTSC system. Standard definition television also provides a picture quality similar to VHS (Video Home System). SDTV and high definition television (HDTV) are the two categories of display formats for digital television (DTV) transmissions, which are becoming the standard.

In North America, digital SDTV is broadcast in the same 4:3 aspect ratio as NTSC signals with widescreen content being center cut.[1] However, in other parts of the world that used the PAL or SECAM color systems, standard-definition television is now usually shown with a 16:9 aspect ratio, with the transition occurring between the mid-1990s and mid-2000s. Older programs with a 4:3 aspect ratio are shown in the US as 4:3 with non-ATSC countries preferring to reduce the horizontal resolution by anamorphically scaling a pillarboxed image.

Standards that support digital SDTV broadcast include DVB, ATSC, and ISDB. The last two were originally developed for HDTV, but are more often used for their ability to deliver multiple SD video and audio streams via multiplexing, than for using the entire bitstream for one HD channel.[clarification needed]

For SMPTE 259M-C compliance, a SDTV broadcast image is scaled to 720 pixels wide (with only 704 center pixels containing the image with 16 pixels reserved for horizontal blanking, a number of broadcasters incorrectly fill the whole 720 frame) for every 480 NTSC (or 576 PAL) lines of the image with the amount of non-proportional line scaling dependent on either the display or pixel aspect ratio. The display ratio for broadcast widescreen is commonly 16:9 (with a pixel ratio of 40:33 for anamorphic), the display ratio for a traditional or letterboxed broadcast is 4:3 (with a pixel aspect ratio of 10:11).

An SDTV image outside the constraints of the SMPTE standards requires no non-proportional scaling with 640 pixels (as defined by the adopted IBM VGA standard) for every line of the image. The display and pixel aspect ratio is generally not required with the line height defining the aspect. For widescreen 16:9, 360 lines define a widescreen image and for traditional 4:3, 480 lines define an image.

SDTV refresh rates can be 24, 25, 30, 50 or 60 frames per second with a possible rate multiplier of 1000/1001 for NTSC timing accuracy. 50 and 60 rates are generally frame doubled versions of 25 and 30 rates for jitter issues when using non-interlaced lines.

Digital SDTV in 4:3 aspect ratio has the same appearance as regular analog TV (NTSC, PAL, SECAM) without the ghosting, snowy images and white noise. However, if the reception has interference or is poor, where the error correction can not compensate one will encounter various other artifacts such as image freezing, stuttering or dropouts from missing intra-frames or blockiness from missing macroblocks. The audio encoding is the last to suffer loss due to the lower bandwidth requirements.

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