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YouTube Introduces 1080p Premium

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Re: YouTube Introduces 1080p Premium

#11
post #10

Earlier quoted context omitted.

DVD's definitely didn't use up the entire 4.7GB. A movie was anything from 700MB to 1GB

I think you're confusing them with MPEG-4 rips that are burned on DVD-R.

Yes, DVDs use the MPEG-2 codec which has a horrible compression ratio compared to H.264 (and CD audio is completely uncompressed).

Re: YouTube Introduces 1080p Premium

#12
post #5

Am I seeing the past in a nostalgic light or were DVD 480p considerably better than YouTube 480p? I feel like streaming services compress their streams so hard that the resolution indicators become meaningless.

It's interesting to see how tiny Netflix mobile download files are. 200MB - 300MB for full-length movies, ~150MB for series episodes. This is on "Standard quality", but still. After some quick Googling (grain of salt) I see that a standard DVD of 4.7GB tends go have (usual encoding) up to 135 min of 480p video. That's a big difference! Even when considering that modern encoding might be more efficient. It is lossy co…

DVDs of movies were actually dual layer, and had ~9GB capacity. I remember this distinctly because to copy a movie rental to a DVD-R you had to use a program like DVD Shrink so you could strip out all the extra features and compress the video a bit more to get it to be under 4.7GB

Re: YouTube Introduces 1080p Premium

#13
Honestly this is one of the best monetization schemes I can think of for YouTube. It's an advantage that doesn't take away anything for non-premium users, and it improves the main functionality of the service. I sincerely hope they can do more like this instead of increasing ad lengths for non-premium users!

Re: YouTube Introduces 1080p Premium

#14
post #5

Earlier quoted context omitted.

It's interesting to see how tiny Netflix mobile download files are. 200MB - 300MB for full-length movies, ~150MB for series episodes. This is on "Standard quality", but still. After some quick Googling (grain of salt) I see that a standard DVD of 4.7GB tends go have (usual encoding) up to 135 min of 480p video. That's a big difference! Even when considering that modern encoding might be more efficient. It is lossy co…

DVD's definitely didn't use up the entire 4.7GB. A movie was anything from 700MB to 1GB

I remember old dvd players had a noticeable pause in the movie when it changed layers.

Re: YouTube Introduces 1080p Premium

#15

Am I seeing the past in a nostalgic light or were DVD 480p considerably better than YouTube 480p? I feel like streaming services compress their streams so hard that the resolution indicators become meaningless.

The difference is bitrate. DVDs were 10 mbit of MPEG-2 while YouTube 480p is 2.5mbit of h264 (or transcodes thereof). These are different encodings so it's not a 1 to 1 comparison of bitrates as h264 is more efficient, but this article indicates that you'd need 4mbit of h264 (which is closer to that YouTube allocates to 720p video) to match the perceived quality of 10mbit of MPEG-2: https://streaminglearningcenter.com/articles/h264-vs-mpeg-2-...

Re: YouTube Introduces 1080p Premium

#16
Is this different from selecting a higher resolution stream (with increased bitrate) and downscaling it on a 1080p display? If not, will they hide 1440+p options behind a paywall as well?

Most creators upload at 1080p, and YouTube has always given bitrate recommendations to match their service. Even with updated documentation, I'm expecting lots of people using their existing encoding presets for future 1080p uploads that can't benefit from this paywalled upgrade.

Re: YouTube Introduces 1080p Premium

#18
post #5

Earlier quoted context omitted.

It's interesting to see how tiny Netflix mobile download files are. 200MB - 300MB for full-length movies, ~150MB for series episodes. This is on "Standard quality", but still. After some quick Googling (grain of salt) I see that a standard DVD of 4.7GB tends go have (usual encoding) up to 135 min of 480p video. That's a big difference! Even when considering that modern encoding might be more efficient. It is lossy co…

DVDs of movies were actually dual layer, and had ~9GB capacity. I remember this distinctly because to copy a movie rental to a DVD-R you had to use a program like DVD Shrink so you could strip out all the extra features and compress the video a bit more to get it to be under 4.7GB

This will depend on the movie and dual layer was more an exception than the norm. Rarely, a movie could be spread across multiple discs as well. Most typically for the extras but sometimes just to fit longer movies in decent quality.

Re: YouTube Introduces 1080p Premium

#20

Earlier quoted context omitted.

I watch 4320p (8K) streams when possible because it noticeably improves the quality on my 4K screens — and this is with my worsening eyesight! That shouldn’t be noticeable if the 4K stream was encoded properly.

I believe this is to some degree due to chroma key subsampling, where in a 4k stream you will only have 1080p worth of light intensity encoded (cluster of 4px). So if you play an 8k stream and downscale to 4k you actually have full chroma (1:1). There could of course be other factors involved as well but this is definitely a pretty big contributor.

You have chroma and luma the wrong way around, chroma is color and luma is light intensity. Chroma is still the thing being subsampled.

I've never really noticed effects from chroma subsampling so my guess would be the bitrate just being better with the higher resolution. Also "full res->compress->downsample" might be more efficient than "full res->downsample->compress" since downsampling is a (really bad) form of lossy compression as well.

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