Tag Archives: IPTV

Video Compression in IPTV

Compression means reducing number of bits required to represent the video image. Video compression in IPTV is always needed in order to deliver smooth service. choosing suitable video compression can mean success or failure in video networking project.

compressing technology has been used to transform large data into small one that can be put into more tiny device. mp3 compression convert audio data from CD into smaller file that can be put into mp3 player with a smaller size of storage (at first). Other compression make it possible for us to watch 2 hours movie from DVD cassette and player. even we can put more than one movie into 1 DVD.

Compression technology has been used because it has many advantages such as :
1. Compressed stream can be transmitted over lower bit rate network rather than uncompressed stream.
2. More compressed stream can fit into given bandwidth.
3. Without compression there is no way to deliver HD video which occupies 1Gbps of bandwidth.
4. Compressed stream can fit more into given storage size.
5. A good compression technique can be used to reduce the amount of bandwidht

IPTV Architecture

IPTV system consists of typical parts, although the name and the details per part can be different between one provider and other but usually to deliver its content IPTV system will have these :

1. SHE (Super Head End)
2. VSO (Video Serving Office)
3. CO (Central Officer) or RT (Remote Terminal) that can serve as (Local End Office)

Super Head End
Super Head End is primary source of programming for IPTV systems. it is responsible for gathering content from programming supplier, converting it into appropriate form for delivery in IPTV network, and transmit it to Video Serving Office (VSO’s).
Super Head End (SHE) performs :
1. Content Aggregation
2. Conversion
3. Transport
4. Formatting

IPTV architecture
IPTV architecture

Video Serving Office
Video Serving Office is responsible for video processing and delivery services for geographic region, such as city. It is also responsible for distributing the content from SHE into every CO/RT in the region. VSO function aslo include
1. Localization
2. Compression
3. Stream Creation
4. Storage
5. Local ads
6. Interactivity
7. STB authorization
8. Fiber delivery

Central Office/ Remote Terminal
Central Office contains telephone call switching equipment. Remote terminal which is usually located underground contain system that connect subscriber lines and digital or fiber optic links to nearest CO.
CO/RT functions also include :
1. DSLAM function
2. Multicasting Technology
3. Connectivity
4. Combining services

Customer Premises
Is the parts/equipment that located in each home for example
1. DSL Modem
2. DSL filter
3. The Home Gateway
4. The STB

Differences Between IPTV, IPVOD, Internet TV, and Internet Video

The use of words IPTV and internet TV are usually used interchangeably while in fact there  are some differences between those words. In my previous post about internet technology for ip tv, i have mention a little about IPTV, now in this post i will write the definition and differences between IPTV, IPVOD, Internet TV and Internet Video.

the table below describe the differences between IPTV, IPVOD, Internet TV, and Internet Video. The first table will display colom for IPTV and IPVOD, the next table displays colom for Internet TV and Internet Video

Service Attribute IPTV IPVOD
Key Protocol Streaming RTP over UDP Progressive Download + Play
Key Protocol Streaming RTP over UDP Progressive Download + Play
Viewing Device STB + TV STB + TV or PC
User Experience Similiar to broadcast or cable TV Similiar to DVDR or VOD
Rewind or Fast Forward No Yes
Content Types Live or prerecorded prerecorded only


And these are the differences between Internet TV and Internet video. (I write this separately because i can’t display the table in full view)


Service Attribute Internet TV Internet Video
Key Protocol Http Streaming: Progressive Download + Play Http Streaming: Progressive Download + Play
Viewing Device PC, mobile, or network appliance PC, mobile, or network appliance
User Experience Similiar to web surfing Similiar to web surfing
Rewind or Fast Forward No Yes
Content Types Live or prerecorded prerecorded only


from table above we can see that the difference between each term is that IPTV and IPVOD use STB or Set-Top Box while Internet TV and Internet Video only use PC or mobile device (smartphone), its just the same with browsing activity. While the difference between term “TV” and “Video” (including Video in “‘Video’ on Demand”) lies in the fact that one provides live content, while the other only provides prerecorded content.

*Set-Top Box is device that receives video packets, decompress them, and display images in realtime. It is crucial component of any IPTV network.

The reason why IPTV exploding?

The reason why IPTV exploding?

Video is precisely timed, continuous stream of constant bit rate information which actually needs its own channel that is purposely-built for video. In contrast IP carry many different kinds of data from different recourse on a common channel. IP is actually deliver information in broken packet. IP technologies by default doesn’t meed the requirement for video service but why IPTV is exploding?

from IPTV and internet Video book, the reason are these five basic arguments :

1. Broadband IP networks reach so many households, Video service providers don’t need to create their own network
2. IP can simplify task to launch new video services, such as Video On Demand, and targetted advertisement.
3. The cost of IP networking is declining due to massive production of infrastructures and equipments.
4. IP network is available in every country and the user of highspeed data connection is growing continuously.
5. IP covers and provides services for many technologies such as web, data transfer, money transaction, dll, it means that people will need and use IP technology in their life