That is quite possible. Netflix announced lowering in bandwidth in EU nations due to higher consumption triggered by lockdown. Nothing was communicated in india but india also does not mandate providing such data. If they downgraded bandwidth and upgraded in india, you might never know.
Why is Netflix all of a sudden OLED level in PQ?
- Thread starter Donivlapog
- Start date
kingfisher
Active Member
I have watched both Netflix and Prime on the same tv with same bandwidth. I noticed some difference between Picture quality between the two. I thought that Netflix does some image/ video processing to make their streaming better. I really don,t know streaming services are sending the raw bit stream or processed.
lightgamer
Well-Known Member
The concept of uncompressed video just doesn't exist because video is massive compared to audio streams. Every video is processed and encoded even on the camera you shoot it on.
Just to give an idea, one uncompressed 4k 10-bit frame is 29.5 MB. That would make 1 second of video 708 MB at 24 fps, 1 minute of video 41.5GB and 2 hour movie 4.8 TB of size.
The different qualities are all different levels of compression with different algorithms and bitrates. Even Blu-ray is 50x compressed compared to original.
What is original then?
Does it even physically exist anywhere?
lightgamer
Well-Known Member
It exists as your camera encodes it. It goes from the sensor to the DRAM inside and then is encoded(and hence compressed) and stored.
Since frame to frame a video is almost the same, even if you just write a basic compression algorithm that stores the deltas between frames it will be compressed to less than 1/10th of the size for example (and that algorithm will be effectively lossless). Obviously, that would fail under stress like with random noise (think initial HBO logo or old CRT static), so that kind of basic algo is not used.
For old film cameras, maybe you've seen a reel for video. Something like this
For digital cameras, it makes no sense to do so.
Generally yes for basic consumer cameras but not necessarily true for advanced prosumer and professional cameras. Most raw formats including Redcode do apply compression algos (low ratios, very high bit rates and therefore are virtually undetectable from uncompressed in practice) but do not process sensor data and therefore require debayering in post production to set colour and brightness of each pixel before being viewable on a screen.
However some cameras like for instance the Arri Alexa can also output uncompressed raw video at 10 bit 4:4:4 over dual HD SDI.
That said, there is no practical need for uncompressed raw, or even raw in many professional film and especially TV shoots. Log files are usually more than sufficient as long a good system like a Red or Arri is used
File Formats & Data Handling | Pre- & Postproduction | Learn & Help | ARRI
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RAW Video Formats Explained - Digital Photo Pro
With so many cameras offering different recording options, it's no wonder there are a lot of questions about this topic. We break them down for you.
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Donivlapog
Well-Known Member
Germany's Fraunhofer studios worked on something to this effect.
crashnburn
Active Member
FILM / ANALOG before QUANTIZATION (read/youtube it) makes it DIGITAL
Digital is always on a Scale of "numbers of points" of data i.e. DOTS "we choose" to store from the ANALOG CURVE(s).
And reproduction of the CURVE is by JOINING all those DOTS.
Analog is what the "material atoms/ molecules" were able to capture as it WAS perceived by the SENSORS.
If the sensor is Digital, then the A to D happens there itself.
That is why LP/ Record & FILM purists exist.
Thanks
Btw, with feb upgrade, elevated blacks and floating blacks are gone in cx. Iam not sure if I updated anywhere..
Donivlapog
Well-Known Member
Floating blacks? Is that good or bad?
It is bad. I have posted pictures earlier.
It is gone which is good.
Update firmware as soon as you receive the tv.
Donivlapog
Well-Known Member
Have LG manufactured CX in 2021 or the 2020 models are only sold with firmware updates?
Donivlapog
Well-Known Member
For what it's worth, a 2021 manufactured TV might have lesser standard deviation in errors and defects as covid 19 saw bad QC measures in 2020. I am not able to find any content that says CX manufacturing has stopped going into 2021. All I can see is the G1 evo models use deuterium in place of hydrogen to make the brightness more and minimizing burn ins for the 2021 release models. I am really caught up in multi tasking that I am not able to spare more time to complete the purchase right away leave alone researching if LG still manufactures CX in 2021. But can't hold it too long that the TN assembly elections may further delay the process. The last thing I need is the announcement of a lock down in the middle of the purchase. So what the heck. 2020 or 2021 model, I will take whatever comes inside the box. Firmwares can be updated.
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