My question is: Is it possible to export from the original footage without transcoding bits that dont need to?
I am using a Canon Eos 550d which produces h264 .mov files with 49mbit/sec. As I believe mercury-playback-engine acts as a frameserver to the editing program of CS5 and serves only I-frames to Premiere. Mercury decodes the files and plays them back, and btw it doesnt report the proper clip properties - My Canon Eos 550d .mov footage (sequence setting: preset: digital slr - dslr 1080p25) shows up as "Type: MPEG Movie" when I choose right-click-Properties. But I assume that internally the footage is not transcoded to mpeg but just decoded by mercury and played back, so Premiere only gets I-frames to handle.
So the question at this point is: What is the source of footage that the export module uses? Does the export module rely on mercury and is feeded only i-frames (aka decoded footage), so that transcoding has to be done, as not to transcode at this point would mean to save uncompressed 25p-full-size-frames one after the other? Or is the export module taking the source file and re-encoding (I understand that there is no "transcoding" with h264, or at the time beeing not yet..) it (because then, as I understand, it would be possible to save parts of sequences withour re-rendering them)?
So, if it is possible, how to tell the export module not to re-encode the bits that dont need re-rendering (all parts that are not near any cuts or effects)- which settings are to be taken, or is there an automatism?
You are looking for "Smart Rendering." PrPro does not offer that. Not sure which NLE program you will need, but I think that at least one version of Sony's Vegas offers that. Google/Bing "smart rendering," and you should get a list of NLE's, that support it.
Now, there can be major issues, as one is going from a GOP format, to a GOP format. Might, or might not, come out right.
Thanks! So I will let that idea go, get back to editing fun with Premiere