Monday, February 25, 2013

At a Loss with Video Compression? Here Are Some Encoding Basics and Artifact Removal Tutorials


This is a brief excerpt from NoFilmSchool




While H.265 has been approved as the next-gen lossy delivery codec, we’re still watching a vast amount of video in H.264. In fact, even when H.265 sooner or later takes its place, videomakers will still be dealing with many of the same basic compression principles at work. Knowing all the variables of a delivery encoding job can help optimize bit efficiency, ensure the highest possible quality of media, and reduce the visibility of artifacting such as banding. Read on for a look at what drives the quality-to-compression ratio of your lossy-encoded delivery video, and how you can even ‘trick’ it in some cases.


Credit for these finds goes to DVXuser MattDavis, responding to a thread started by another user worried his Vimeo compressions artifacts (specifically banding) stem from the Canon C100. While it doesn’t appear that the camera is necessarily underperforming in its own encoding of underexposure, the discussion does shed some light on some qualities of footage that can have trouble translating well to H.264. Here’s the video of DVXuser draculr’s concern:


This raises a question that faces video uploaders to YouTube, Vimeo, or any major video hosting/sharing service: how much of the lossy …



By: Dave Kendricken


Continued… click here!







via planet5D pinterest news http://pins.planet5d.com/at-a-loss-with-video-compression-here-are-some-encoding-basics-and-artifact-removal-tutorials/

No comments:

Post a Comment