• SEARCH
  • DOWNLOADS
  • MY ACCOUNT
  • Buy (0)
  • CONTACT
  • Free Trial
Wowza Logo
  • PRODUCTS
  • DEVELOPER
  • SOLUTIONS
  • PRICING
  • RESOURCES
  • SUPPORT
  • My Account
  • Buy (0)
  • SEARCH
  • Ask a question
  • Forums
    • Wowza ClearCaster
    • Wowza Streaming Engine
    • Wowza Streaming Cloud
    • Wowza Player
    • Wowza GoCoder SDK
    • Wowza Developer Dojo
    • Topics
    • Questions
    • Articles
    • Users
    • Badges
  • Sign in
  • Community Home /
  • Wowza Streaming Engine /
  • General Forum /
avatar image
Question by Hasham Ahmad · Mar 16, 2008 at 03:20 PM ·

AAC 2-pass encoding

Hi there is Wowza safe to stream 2-pass encoded ABR Nero AAC files or is it better to use CBR encodings? Are there any implications for using ABR? I would like to acheive the best quality at a specific bitrate hence I would prefer to use ABR.

Thanks

Hash
Comment

People who like this

0 Show 0
10 |600 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

2 Replies

· Add your reply
  • Sort: 
avatar image

Answer by Charlie Good · Mar 16, 2008 at 08:06 AM

If you use a decent size client side buffer of say 2-5 seconds(NetStream.setBufferTime) and you set a reasonable maximum bitrate as part of the encoding process, then you should be OK. People who are on the edge of having enough bandwidth to view the videos may have problems but folks that are well above the average bitrate of the video should be fine. The large client side buffer will give them a little wiggle room to handle the extra surge of bandwidth that is needed during faster motion parts of the video.

Make sense?

Charlie
Comment

People who like this

0 Show 1 · Share
10 |600 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image Hasham Ahmad · Mar 16, 2008 at 05:00 PM 0
Share
Absolutely. I suspect the variation in bitrate in ABR is small enough not to affect streaming reliability at reasonable bitrates on broadband, especially with a sensible buffer setting. I guess my concern is more for reliable streaming at lower bitrate audio only, say for modem users.
avatar image

Answer by Charlie Good · Mar 16, 2008 at 12:44 PM

The same answer applies. If you target a given bitrate (such as modem type bitrates) and assume 80-90% efficiency then ABR/VBR (variable bit rate) will work as long as you set a large enough client side buffer and the average bitrate it low enough to fit.

Charlie
Comment

People who like this

0 Show 0 · Share
10 |600 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Follow this Question

Answers Answers and Comments

1 Person is following this question.

avatar image

Related Questions

change/remove info about wowza server when scanning 5 Answers

Sending parameters to rtmp protocol 2 Answers

add welcome video before play live stream on client side 3 Answers

Does wowza offer video storage and streaming with customized wowza system? 1 Answer

URL missing - playlst.m3u8 - VLC 3 Answers

Hot Topics
  • AWS Hosting
  • Mobile SDK
  • Deployment Options
  • Load Balancing
  • Content Security
Product Sign-in
  • Wowza Streaming Cloud
  • Wowza Player
Under the Hood
  • Developer Tools
  • Wowza System Status
  • Test Players
  • Developer IDE
Resellers
  • Find a Reseller
  • Reseller Portal
  • Become a Reseller
Company
  • About Us
  • Blog
  • News
  • Events
  • Careers
  • Customers
  • Partners
  • Contact Us
Stay Connected
Get Monthly Newsletter
Select a Language
  • English
    • English
    • Español
    • 日本語
    • 한국어
    • हिन्दी भाषा
    • 中文
    • русский язык

© 2005–2019 Wowza Media Systems, LLC. All rights reserved.   Terms | Privacy | Trademarks | Legal


Enterprise
Social Q&A

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Create an article
  • Forums
  • Wowza ClearCaster
  • Wowza Streaming Engine
  • Wowza Streaming Cloud
  • Wowza Player
  • Wowza GoCoder SDK
  • Wowza Developer Dojo
  • Explore
  • Topics
  • Questions
  • Articles
  • Users
  • Badges