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Can I use compressor twice
I edited a sequence in FCP and ran it through compressor then made a DVD. Now I found out that have to go back and make a minor correction. The problem is I deleted the project and all I have is the final self-contained clip that I ran through compressor. My question is…can I open a new project, import the self-contained clip that I already compressed, make the minor change and then compress it again without loosing quality by compressing it twice at the same bit rate? Any suggestions?
Adam -
3 Replies
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You should never use MPEG-2 twice – it’ll always lower the quality. But what kind of change do you need? If you need to shorten, insert or something like that, and if a precision of one quarter of a second is good enough, why don’t you edit in the timeline of DVDSP? While this is definitely not a MPEG-editing software, you’ll get away with minor corrections.
Regards,
Uli
Author of “DVDs gestalten und produzieren”, a book on professional DVD-authoring in German.
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Thanks for the help! I will do the editing in DVD SP. All I need to do is change the credits and swap a photo. I will create this in FCP, run it through compressor, import assets into DVD SP and then edit. Does this sound right?
Thanks again,
Adam -
Yes! You can trim clips on both sides and you can add clips in the timeline for one ‘ track’ in DVDSP.
Just take care to check the TC values after changes to the image, since they’ll jump to the next I-frame, then trim the sound precisely to the same value.
Hope this helps,
Uli
Author of “DVDs gestalten und produzieren”, a book on professional DVD-authoring in German.
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