> Chris: > I've noticed while watching live tv that show going to really > dark (but not black frame) scenes cause stuttering sound > and jerky picture and cpu usage spike. (This is with=20 > vanilla .16) as soon as the scene brightens this goes away. > > Is this anything to do with commercial detection? > (It happens only on live tv - which is really odd in that > I though commercial detection happened after the recording > was done.
Isaac already posted in response to this concerning the "extra audio buffering" solution, but I wanted to clarify that this is not commercial detecting related since the people seeing it say it happens on playback of existing recordings as well as LiveTV. This is unrelated to your issue, but if you use blank-frame detection via either of the blank-frame settings or the ALL setting and you use software encoding, then blank-frame detection is done while recording. This isn't very cpu hungry compared to compression so it doesn't have a big impact. The fact that blank-frame detection is done during recording when using software encoding allows users to use commercial skip immediately after recording if blank-frame does a fairly decent job for them. Once the recording finishes, the full detection is run. -- Chris
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