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4 CH 1080 60i AIF files to 4 CH PAL AIF
We did a conversion of 5 HD 60i ProRes files to PAL SD Digibetas recently. Each master file had 4 channels of audio. Our PAL client called saying two of the masters had mixed rather than separate audio on the 4 tracks.
Is their a painless way to do an aif 4 track conversion in Compressor, sound track or FCP?
thx…jw
Producer/DP, HD series, “Discoveries…America”, “Discoveries…Ireland”, “Discoveries…Spain”,
“Discoveries…Argentina”, Discoveries…India”, “Discoveries…Asia”, “Discoveries…Africa” -
3 Replies
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How did you do the conversions? If it was maintaining the same real time then the audio files can be sent without alteration as aifs.
So if you converted 29.97 to 25 with the exact same running time, the audio files will sync. If you did the old 23.976 to 25 frame speed up, then the audio will need to be sped up 4.1% through software like Pitch N Time or MPEX3 which changes length but maintains pitch. Compressor can’t do the speed change without changing pitch which is 3/4 semitone and not nice.
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The conversions were done at a post house, so I’ll need to check to see which technique they used. I was trying to make the fix without taking everything back down to them to redo.
Thanks for the information.
JW
Producer/DP, HD series, “Discoveries…America”, “Discoveries…Ireland”, “Discoveries…Spain”,
“Discoveries…Argentina”, Discoveries…India”, “Discoveries…Asia”, “Discoveries…Africa” -
Frankly if the post house mixed tracks when converting, they should fix that problem for free.
Meanwhile you might be able to just send the audio as aifs depending on how they did the standards conversion.
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