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TimBoz
23rd August 2005, 11:10
I have most of a project set up in Encore and require 5.1 ac3 audio.
Using Surcode in Premiere Pro I have imported the 5 mono wav (L,C,R,ls,rs).
The mixer works great and produces output, however when encoding the encoder runs fine until about 12 frames before the end and stops, though 'time elapsed' still counts.
Each wav is PCM signed 24 bit 48000 Hz 1152 kbps, though each is fractionally different lengths (.1 sec).
I have tried also with the encoder in Scenarist 7, which refuses, the message being 'Sample Byte size is wrong = 24'. Cannot find what a sample byte size is in the Help file.
Is it the different lengths causing problems or possibly the kbps which seem a bit high.

mic
23rd August 2005, 20:29
I've not encountered you situation, but my guess would be the 24 bit wav files -- std is 48/16

johnman
23rd August 2005, 22:09
I dont know if this info helpes, but wavewizard can merge the files to a single file, which will result that all channels will have the same length. If you then split them again to mono they are all equal length, sampleformat etc. You can also convert to a different sample format if needed.

TimBoz
31st August 2005, 04:06
In the end it was (probably) a combination of 24 bit audio with different lengths (by extremely small time differences).
Making each channel 16 bit and trimming to exactly the same length (I suppose I could equally have added silence to create same length) was the first part of the solution.
Reimporting them seemed to eliminate the problem with Premiere which then mixed perfectly.
Its obvious now - 16 bit gives lower bitrate, though I went for 24 bit because I thought that effect filters added after would be of better quality.
:)