Featured Research

from universities, journals, and other organizations

Streaming video more 'green' than DVDs? Billions of kilograms of carbon dioxide could be saved by scrapping discs, study shows

Date:
May 28, 2014
Source:
Institute of Physics
Summary:
A new study has shown that streaming can be much better for the environment, requiring less energy and emitting less carbon dioxide, than some traditional methods of DVD renting, buying and viewing. The study's authors cite modern devices such as laptops and tablets as the reason for this improvement, as they are much more efficient than older, energy-sapping DVD players.

A trip down to the local DVD store has slowly become a thing of the past thanks to the rise of video streaming services, which allow viewers to indulge in back-to-back episodes of hit TV series like House of Cards and Breaking Bad at the click of a button.

Now, a new study has shown that streaming can be much better for the environment, requiring less energy and emitting less carbon dioxide (CO2), than some traditional methods of DVD renting, buying and viewing.

The researchers, who have published their study today, 29 May, in IOP Publishing's journal Environmental Research Letters, cite modern devices such as laptops and tablets as the reason for this improvement, as they are much more efficient than older, energy-sapping DVD players.

Furthermore, the driving that is required to go and buy, or rent, DVDs makes this method much more energy- and carbon-intensive.

A significant proportion of the energy consumption and carbon emissions for streaming comes from the transmission of data, which increases drastically when more complex, high-definition content is streamed.

In their study, the researchers, from Lawrence Berkley National Laboratory and Northwestern University, estimated that if all DVD viewing in the US was shifted to streaming services in 2011, around 2 billion kg of CO2 emissions could have been avoided and around 30 petajoules (PJ) of energy saved -- the equivalent of the amount of electricity needed to meet the demands of 200,000 US households.

They estimated that in 2011, 192 PJ of energy was used, and 10.4 billion kg of CO2 emitted, for all methods of DVD consumption and streaming in the US.

From this, they calculated that one hour of video streaming requires 7.9 megajoules (MJ) of energy, compared to as much as 12 MJ for traditional DVD viewing, and emits 0.4 kg of CO2, compared to as much as 0.71 kg of CO2 for DVD viewing.

To arrive at their results, the researchers compared video streaming with four different types of DVD consumerism: DVDs that are rented from online mailers; DVDs that are rented from a store; DVDs that are purchased online; and DVDs that are bought from a store.

Video streaming was limited to TV and movies and did not include shorter videos that are streamed online through YouTube etc.

They found that video streaming and the online rental of DVDs required similar amounts of energy; however, the renting and purchasing of DVDs from a store were much more energy intensive, due to the impact of driving.

Lead author of the research Arman Shehabi, from Lawrence Berkley National Laboratory, said: "It's a modern-day equivalent of the debate about which is more environmentally sound -- the disposable or the cloth diaper.

"Our study suggests that equipment designers and policy makers should focus on improving the efficiency of end-user devices and network transmission energy to curb the energy use from future increases in video streaming.

"Such efficiency improvements will be particularly important in the near future, when society is expected to consume far greater quantities of streaming video content compared to today."

Fast Facts:

  • An estimated 1.2 billion DVDs were purchased in the US in 2011
  • An estimated 17.2 billion hours of DVDs were viewed in 2011 in the US
  • An estimated 3.2 billion hours of movies and television programmes were streamed in the US in 2011
  • The percentages of total video streaming viewing time attributable to computers, televisions, and mobile devices in 2011 are estimated at 20%, 77%, and 3%, respectively

Story Source:

The above story is based on materials provided by Institute of Physics. Note: Materials may be edited for content and length.


Journal Reference:

  1. Arman Shehabi, Ben Walker, Eric Masanet. The energy and greenhouse-gas implications of internet video streaming in the United States. Environmental Research Letters, 2014; 9 (5): 054007 DOI: 10.1088/1748-9326/9/5/054007

Cite This Page:

Institute of Physics. "Streaming video more 'green' than DVDs? Billions of kilograms of carbon dioxide could be saved by scrapping discs, study shows." ScienceDaily. ScienceDaily, 28 May 2014. <www.sciencedaily.com/releases/2014/05/140528204303.htm>.
Institute of Physics. (2014, May 28). Streaming video more 'green' than DVDs? Billions of kilograms of carbon dioxide could be saved by scrapping discs, study shows. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2014/05/140528204303.htm
Institute of Physics. "Streaming video more 'green' than DVDs? Billions of kilograms of carbon dioxide could be saved by scrapping discs, study shows." ScienceDaily. www.sciencedaily.com/releases/2014/05/140528204303.htm (accessed September 20, 2014).

Share This



More Earth & Climate News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Raw: Wildfires in CA Burn Forest Asunder

Raw: Wildfires in CA Burn Forest Asunder

AP (Sep. 18, 2014) An out-of-control Northern California wildfire has nearly 2,800 people from their homes as it continues to grow, authorities said Thursday. Authorities said a man has been arrested on suspicion of arson for starting the fire on Saturday. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins