About BD Originials and Encodes

[Jay123210599]

Let's just say I have three Blu-Ray videos, the original, a H.264 encode, and a H.265 encode. I lnow that the encodes have lower quality than the BD source, but will people be able to tell the difference or just see that they are all visually/virtually lossless to each other?

[Cornucopia]

Too many variables to say.


Scott

[Selur]

The reencodes might even visually look better to some folks due to filtering.

[Jay123210599]

The reencodes might even visually look better to some folks due to filtering.

What's filtering, and how do you do it?

[Cornucopia]

What's video?

Ok, it's getting clearer that you're just F'ing with us. I'm out.


Scott

[Jay123210599]

What's video?

Ok, it's getting clearer that you're just F'ing with us. I'm out.


Scott

No, I'm being serious. How do you filter videos?

[usually_quiet]

Let's just say I have three Blu-Ray videos, the original, a H.264 encode, and a H.265 encode. I lnow that the encodes have lower quality than the BD source, but will people be able to tell the difference or just see that they are all visually/virtually lossless to each other?

In encoding discussions, "quality loss" equals the loss of picture information that is present in the original. Lossy encoding always leaves out some of the original picture information. Sometimes the difference is easy to see and sometimes it's hard to see. Unless someone can view all three versions side-by-side, they can't evaluate the differences between them.

No, I'm being serious. How do you filter videos?

Filtering can't replace missing picture information. Filtering is used to correct other kinds of defects

However, as was already pointed out to you in at least one of your related threads, since you are going to convert your edited clips into a gif or similar in the end, that will probably result in a noticeable loss of fine detail and color gradation.

[poisondeathray]

The reencodes might even visually look better to some folks due to filtering.

What's filtering, and how do you do it?

Filtering is applying some sort of transform instead of a straight encode .

Deinterlacing is a type of filtering , resizing (resampling) is a type of filter , upscaling is a type of filtering

You have to customize filters and settings according to the specific source and whatever your goals are .

eg
if source is blurry you might sharpen it

if it's too grainy, you might degrain it

If it's too noisy, you might denoise it

Maybe colors are too dull and you want to increase saturation

Maybe source has line problems, you want to fix the lines

etc...
.
.

Technically, applying any filter is deviation from the original BD, so it's "quality loss" compared to the original BD -

But subjectively, the applied filters might look "better" to some people, maybe worse to others . It depends on your point of reference. Important to note these are subjective changes, so there are going to be varying opinions

Filtering is separate from encoding. The uncompressed filtered source would be the new input source. So when you encode the filtered source with lossy compression, there will be quality loss reflected in that encode compared to the uncompressed filtered source .

Objectively, you can no longer compare a filtered version, with an unfiltered version. You couldn't measure with objective metrics such as PSNR - because filtered vs. unfiltered are considered different videos. You can only make subjective comparisions when applying filters