Newbie editing and compression question

1. cnil1
   Member

   

   I am struggling with understanding compression. I am of the understanding that ideally one would shoot in a minimally compressed file format and then upload into software such as Corel VideoStudio X2 at which time edits, transitions and subtitles are added. Then the compressed version would be saved for actual use. Based on my needs, I'll likely use H.264 which I understand is the same thing as AVCHD. With this scenario, the compression only occurs as the last step.

   However, the camera I am looking at, a Panasonic AG-HMC70u, records in AVCHD, and I don't understand what happens when I import into VideoStudio and edit. Are there potential problems editing and subtitling video that is already compressed with AVCHD by the camera? When I export the "final version" will that version be "double compressed" - once by the camera and again by the software?

   Many thanks to anyone who can help explain this to me!

   Posted 2 years ago #

2. robGRAUERT
   Member

   

   H.264 is not the same as AVCHD. I believe AVCHD uses the H.264 algorithm, but they're still not the same. 

   Almost all footage is compressed when being record. Only big time pros actually record/edit uncompressed video. The files are just too large for the average computer to handle.

   So, technically yes, your footage is being compressed twice. Once when recorded, and then again on the export, unless you export as the same codec you are working in. That's just how it is. 

   Rob Grauert, Jr
   http://www.robgrauert.com
   http://command-r.tumblr.com

   Posted 2 years ago #

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