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Keyframe Interval Question

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Ed Hecht
Keyframe Interval Question
on Jun 27, 2013 at 5:13:29 pm

Greetings Fellow Encoders,
I am pinging the hive mind over an issue that, as a video professional I should know the answer to by now... Take a look at this URL (warning: dull, technical video):
http://www.synopsys.com/apps/formality-demo/formality-ultra.html
See how there is a rhythmic glitch that occurs every few seconds or so? I use Adobe Media Encoder to create the mp4 (which is then converted to Flash via our archaic, content management system). Is there anything I can do to prevent these glitches, like extending the keyframe interval? (It's not something I can easily test myself as another team handles content ingestion/upload for the web.) Thanks!
Ed



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Ivan Myles
Re: Keyframe Interval Question
on Jun 27, 2013 at 6:29:28 pm

If the rendered file is being transcoded I recommend an all-intraframe structure with key frame distance equal to one (1) frame. ProRes, DNxHD, or AVC-Intra would be better than H.264 for this application as long as the file is 720p or 1080p.


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