Choosing encoding parameters


I'm Saying Adios to F4V

A recent consulting project revealed several key flaws in Adobe's F4V format. Click over to the main article to read all about them.

Configuring low data rate adaptive streams

When you configure a group of adaptive streaming files, you produce some files at relatively low data rates. With these files, you have several options to preserve quality, including lowering the resolution, the frame rate or both. Lower resolutions preserve frame quality but can look pixelated when scaled for display. Higher resolutions avoid scaling artifacts, but frame quality can suffer. Dropping the frame rate preserves smoothness, but drops frame quality.

If you click over to the main article, you'll be able to see the same source video encoded at 5 configurations, all to 300 kbps (2pass VBR restricted to 120% of target data rate). These are:

  • 640x480x15 fps
  • 640x480x30 fps
  • 400x300x15 fps
  • 320x240x15 fps
  • 320x240x30 fps

Have a look and see which one looks best, and if you have a strong opinion, let us know via a comment.

Streaming Producton - Improving Video Quality - the Video

janhead.jpgThis is a video from a session at Streaming Media West. In addition to the production/pre-processing and encoding tips, it's a unique opportunity to see me - Jan Ozer - as a blonde, which I was for roughly 6 weeks last year (a Halloween thing).

Click through to the main article to watch the video.

Top tips for improving streaming video quality

I'm at StreamingMedia West in San Jose about to go into a session on improving your streaming video quality - my top tips. I'm attaching the presentation to this short post for those who attended and others interested in the topic.

I hope you find them helpful.

Choosing your streaming resolution and data rate

Choosing video resolution and data rate are two of the most fundamental decisions that streaming producers must make. This article identifies the factors integral to these choices. 

There are (at least) three elements to consider when choosing the resolution and video data rate for your streaming video. First is to understand the types of artifacts that viewers notice and ensure that whatever encoding parameters you use, these artifacts aren’t present. Second is to review the parameters used by competitors and other major sites frequented by your viewers. Third, is to analyze the per pixel data rate used by those sites and your proposed parameters and make sure that your data rate isn’t excessively high or low. This article reviews all three and provides current statistics of encoding parameters used by aggressive corporate and broadcast streamers.