Understanding HD...

[Zangetsu]

Hi Guys,

Lots of u have watched Full-HD Content (1080p).
So I wanna clear the concept of 'what is HD'.

High-Definition Video consists of two things
A.Resolution above 720p but 1080p is full HD.

B.Video Bitrate the more the bitrate the more the crsytal clarity...

But I have a question on point...by only resolution of 1080p doesnt mean dat the content is Full-HD...coz low resolution videos can also be upscaled to 1080p using converters.....

so,point B also is essential..what do u say?

any other core component u know?

 

[Vyom]

Frame Rate? It should be atleast 25, but 30 is also common.
I think by Bit rate you mean Data rate. Since Bit rate is usually associated with the Audio part of a video file.

 

[gameranand]

But I have a question on point...by only resolution of 1080p doesnt mean dat the content is Full-HD...coz low resolution videos can also be upscaled to 1080p using converters.....

Yes they can be upscaled. It depends whether the video has been recorded in 1080p or not.

so,point B also is essential..what do u say?

Well of course its essential. Try to lower it too much and you'll see the results.
As Vineet said Frame rate is also important. And the other important parts are container, codec and many things that coming together makes a Video say if you have a damn good quality but a bad Audio so would you say that the video was good .

 

[coolpcguy]

by only resolution of 1080p doesnt mean dat the content is Full-HD.

by definition any video having a resolution greater than 1280x720 ( aka 720p) is termed as HD. As the resolution goes beyong that, more and more prefixes get added. Full HD, Ultra Max Hd yadda, yadda.

 

[abhidev]

Hi Guys,
But I have a question on point...by only resolution of 1080p doesnt mean dat the content is Full-HD...coz low resolution videos can also be upscaled to 1080p using converters.....

Any video having 1080p is termed as full HD...it maybe upscaled but as far as it displays 1080 pixels vertically

 

[Zangetsu]

Frame Rate? It should be atleast 25, but 30 is also common.

but a framerate of 23.XX fps is also good
Btw framerate is associated with motion....& not Crystal Clear Clarity

I think by Bit rate you mean Data rate. Since Bit rate is usually associated with the Audio part of a video file.

Nope....I mean Video Bitrate & not audio bit rate they both r different

And the other important parts are container, codec and many things that coming together makes a Video

Not Necessary if u neglect the file size.
say an MP4 can also be a good container as MKV for an HD Content

say if you have a damn good quality but a bad Audio so would you say that the video was good.

Audio is for Hearing...& HD videos r 5.1 channel
its vision aspect of HD...

Any video having 1080p is termed as full HD...it maybe upscaled but as far as it displays 1080 pixels vertically

No use of upscaling...it just covers ur LCD screen size..but will be heavily pixelated....

 

[gameranand]

Audio is for Hearing...& HD videos r 5.1 channel
its vision aspect of HD...

If you get the video from a legit source then AFAIK video won't be upscaled and audio would be good but you can't guarantee that for other sources also which provide good visual but bad audio. I said that regarding those videos.

No use of upscaling...it just covers ur LCD screen size..but will be heavily pixelated....

It will be still called HD. Thats why I mentioned

It depends whether the video has been recorded in 1080p or not.

 

[Zangetsu]

^^ Buddy recording a video in 1080p format is completely different from a upscaling a video in 1080p.....

dont compare a upscaled 640*240 video to 1080p ---> a HD video recorded by a cam corder (1080p)

 

[Vyom]

^^ Absolutely agree. I wonder why upscaling is done in the first place? Since we can watch a low-res video also in full screen, which would fill the entire screen, and of course still be pixelated!

 

[asingh]

I think this explains it good detail..!

 

[Zangetsu]

Cud u guys post the details of the best HD 1080p content u have seen...
details such as resolution,video bitrate,fps etc

 

[gameranand]

Here is mine
General
ID : 741 (0x2E5)
Complete name : F:\Songs\English Video\Shakira\SHAKIRA - HIPS DONT LIE.ts
Format : MPEG-TS
File size : 445 MiB
Duration : 4mn 6s
Overall bit rate : 15.1 Mbps

Video
ID : 17 (0x11)
Menu ID : 1 (0x1)
Format : MPEG Video
Format_Commercial_IfAny : HDV 720p
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=15
Codec ID : 2
Duration : 4mn 6s
Bit rate mode : Variable
Bit rate : 13.9 Mbps
Nominal bit rate : 15.0 Mbps
Maximum bit rate : 15.4 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.253
Stream size : 410 MiB (92%)

Audio
ID : 20 (0x14)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : 129
Duration : 4mn 6s
Bit rate mode : Constant
Bit rate : 448 Kbps
Maximum bit rate : 504 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -232ms
Stream size : 13.2 MiB (3%)
Language : English

Text #1
ID : 17 (0x11)608-1
Menu ID : 1 (0x1)
Format : EIA-608
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 4mn 6s
Stream size : 0.00 Byte (0%)

Text #2
ID : 17 (0x11)1
Menu ID : 1 (0x1)
Format : EIA-708
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 4mn 6s
Stream size : 0.00 Byte (0%)

Menu
ID : 16 (0x10)
Menu ID : 1 (0x1)
Duration : 4mn 6s
List : 17 (0x11) (MPEG Video) / 20 (0x14) (AC-3, English)
Language : / English
Maximum bit rate : 16201200


Although its 720p but its the best I have ever seen.
I have seen 1080p content but nothing like this.

 

[Zangetsu]

Bit rate : 13.9 Mbps
Nominal bit rate : 15.0 Mbps
Maximum bit rate : 15.4 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps

Although its 720p but its the best I have ever seen.
I have seen 1080p content but nothing like this.

59.940fps....gr8
is there any pixelation on full screen

y this 3 different bitrates??
I think bitrate above 10Mbps is excellent

 

[gameranand]

is there any pixelation on full screen

No its crystal clear even with all those disco lights.

y this 3 different bitrates??

Because of this

Bit rate mode : Variable

 

[nims11]

What about1080i, in which providers like tata sky provide HD channels? Isnt it the same as 720p?

 

[ico]

What about1080i, in which providers like tata sky provide HD channels? Isnt it the same as 720p?

Gogole about Progressive scan (p) and Interlaced video (i).

Progressive scan vs. interlaced video | Axis Communications

Interlaced vs. Progressive Signals

The Big Picture - Interlaced vs. Progressive, Fields vs. Frames, 3:2 pulldown and Inverse Telecine (page 1 of 2)

1080 and 720 are just the number of vertical lines.

 

[gameranand]

@ nims11
Have a look at this
Wikipedia 1080i

 

[Dangerous Dave]

Here is mine
General
ID : 741 (0x2E5)
Complete name : F:\Songs\English Video\Shakira\SHAKIRA - HIPS DONT LIE.ts
Format : MPEG-TS
File size : 445 MiB
Duration : 4mn 6s
Overall bit rate : 15.1 Mbps

Video
ID : 17 (0x11)
Menu ID : 1 (0x1)
Format : MPEG Video
Format_Commercial_IfAny : HDV 720p
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=15
Codec ID : 2
Duration : 4mn 6s
Bit rate mode : Variable
Bit rate : 13.9 Mbps
Nominal bit rate : 15.0 Mbps
Maximum bit rate : 15.4 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.253
Stream size : 410 MiB (92%)

Audio
ID : 20 (0x14)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : 129
Duration : 4mn 6s
Bit rate mode : Constant
Bit rate : 448 Kbps
Maximum bit rate : 504 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -232ms
Stream size : 13.2 MiB (3%)
Language : English

Text #1
ID : 17 (0x11)608-1
Menu ID : 1 (0x1)
Format : EIA-608
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 4mn 6s
Stream size : 0.00 Byte (0%)

Text #2
ID : 17 (0x11)1
Menu ID : 1 (0x1)
Format : EIA-708
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 4mn 6s
Stream size : 0.00 Byte (0%)

Menu
ID : 16 (0x10)
Menu ID : 1 (0x1)
Duration : 4mn 6s
List : 17 (0x11) (MPEG Video) / 20 (0x14) (AC-3, English)
Language : / English
Maximum bit rate : 16201200


Although its 720p but its the best I have ever seen.
I have seen 1080p content but nothing like this.

where did you get this video from i need it

 

[gameranand]

where did you get this video from i need it

You just have to install Klite Codec Pack This feature comes with it. After you have installed it then a option Media info in the right click context menu of any playable file. Be it video or Audio.

 

[sujoyp]

You just have to install Klite Codec Pack This feature comes with it. After you have installed it then a option Media info in the right click context menu of any playable file. Be it video or Audio.

Bro he needs the video itself and not the information of video