I too am having a similar issue with our C300 and PluralEyes. I’ll import a sequence with a C300 for Camera A and a 5D for Camera B, PluralEyes will recognize the 5D footage perfectly but the C300 footage is randomly trimmed. For instance, I’ll have a ten minute clip from the C300 and PluralEyes will end the clip half way through, giving me less then 5minutes of the original… this will sync with a few of the 5D clips but will leave half of the sequence un-synced… what’s more, when I bring the sequence back into Premiere the entire C300 clip appears to be there but is given arbitrary in and out points that are not adjustable within the timeline despite the fact that the entire un-abridged clip is viewable from the source monitor. I can find no information about this bug nor can I find any settings that might be responsible for automatically trimming a clip.
Your post was the only info I could find on integrating C300 footage with PluralEyes 3 for Premiere… I have a feeling the problems we are experiencing might be related but I can’t say for sure. It’d be great to know if you ever found a work around. I’ve had limited success by selecting my C300 clip and choosing clip>audio options>render and replace, then unlinking the audio from the video footage and sending to PluralEyes… but that only works half of the time.
I’ve been reading quite a bit about people using the C300 in premiere but I guess they aren’t using multi camera shoots or are syncing the old way by using a slate.