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Blu-ray for better SD prog presentation

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Stephen de Vere
Blu-ray for better SD prog presentation
on Oct 14, 2010 at 11:13:01 am

Anyone worked out a way to put a standard definition (Digibeta) 1 hour show onto a Blu-ray disc for playback via a Blu-ray player to a HD display ?

Thinking of leaving it standard definition but using the better H264 encoding for the player to upscale from, to give a better result than feeding the upscaler with DVD spec mpeg2 encoded video.


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eric pautsch
Re: Blu-ray for better SD prog presentation
on Oct 14, 2010 at 12:02:29 pm

Unfortunately not. Whether its upscaled by a player or you upscale via conversion and encode, its still SD in the end and won't improve quality - MPEG 2 or H.264 would make any difference. although H.264 is a more efficient encoding codec, it wont make SD look any better. Throw a quart of water into a gallon container - you still have a quart of water in the end.

I had to upscale a 16x9 720x480 sequence one time to 1920x1080 for a BD project. The only reason was the client needed pop-up menus for the SD footage as well. Many BD titles you see with SD material are done this way as well. No quality gain though.


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Noah Kadner
Re: Blu-ray for better SD prog presentation
on Oct 14, 2010 at 2:57:46 pm

Quality loss too- as you're losing a generation. Shoot HD if you want HD or simply live with monitor upconversion. So do it much more impressively than others.

Noah

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Michael Sacci
Re: Blu-ray for better SD prog presentation
on Oct 14, 2010 at 3:32:21 pm

Well it maybe worth it if you are upscaling the movie with high end hardware (Teranex or Kona 3). That way you can use a much higher bitrate for your encode.

But many BluRay players do a great job with the up conversion, especially a PS3.


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Stephen de Vere
Re: Blu-ray for better SD prog presentation
on Oct 14, 2010 at 7:30:54 pm

I don't want to invest in upscaling hardware (or software) when many BD players do it so well. Just hoping to maintain the SD quality of source material by avoiding the nasty bump down to DVD spec mpeg2.

So all that extra data rate (x4) can't do a better SD job than a DVD ?
I'm stunned.


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eric pautsch
Re: Blu-ray for better SD prog presentation
on Oct 14, 2010 at 11:25:54 pm

Encoding for BD is a bump down as well. You cant make a mountain out of a mole hill. Your resolution is already set to SD. Throwing higher bitrates at it wont make it better....just SD with with more bitrate.

Maybe you're confusing quality and resolution? Of course all this depends on using high quality encoding. All bets are off if you dont have a good encode for DVD to start with. In other words, the eye wouldn't be able to see the difference between a properly encoded MPEG2 stream for DVD and the same stream encoded for H.264 for BD at 4x the bitrate.


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Stephen de Vere
Re: Blu-ray for better SD prog presentation
on Oct 15, 2010 at 12:09:16 pm

Yes, just discovered BD is limited to 8-bit 4:2:0 - same as DVD - so any advantage is only in data rate which, like you say, assuming a good encode, will be very marginal.


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