Aaron Star
Forum Replies Created
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I am using a shuttle too with vegas 11 (movie studio) and after a couple hours or some thing the device will start clicking. Also while using the device for the primary audio device, video preview scaled full sceen in vegas causes the video to studder. The last one sounds odd, but scaling the video back to 100% solves the studdering problem. Using the built in audio card, the video plays full frame rate scaled to any size. I have not found a solution to this either. Running the lastest usb3, bios, and shuttle drivers.
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Editing Mpeg4 in vegas is the same any other codec. The problem is not with vegas but with the way mpeg4 compresses video. DV and other editing codes store video on a per frame basis. Mpeg2+4 store groups of pictures referencing changes in the index frame. Thats why it seems like it takes a ton of computer power to edit mpeg4, the editor has to find the i-frame and then apply the changes to show the frame your trying to edit. If you convert your mpeg4 clips to all I-frames 1st, the footage will edit like DV or other editing codec. If you do convert to i-frame, using a high bitrate (compared to original) and an uncompressed audio track helps with artifacts and sound sync. If using a codec like 3vix, you can go in at set the codec to encode all iframes. utilities like mpeg_stream_clip or graphedt can help with conversion. At least thats what I have found.
https://en.wikipedia.org/wiki/I-frame