Render and Replace. "Transcode Failure: Unable to Match Video Aspect"

[Andre.Cianfa]

Hi everyone, I'm working on a sequence that contains a few clips horizontally and vertically flipped and played in reverse. Considering that when I play the sequence it lags a lot, I tried to use the "Render and Replace" function on the clips concerned, but every time Adobe Premiere gives me this error: "Transcode Failure: Unable to Match Video Aspect". It gives the same error even when I try to apply "Render and Replace" to a clip just imported in the timeline and without any effect. Does anyone have an idea of what might be causing the error?
Thank you very much. Bye.

[Jeff Bellune · Accepted solution]

Instead of Render and Replace, go to Sequence>Render In to Out.

Render and Replace actually replaces your source footage with the rendered version, and that rendered version is then re-rendered during Export.

Render In to Out just renders preview files for use in the timeline to make your editing go faster, which is what I think you want.

[Andre.Cianfa]

Thank you very much!! Yes, the function of "Render In to Out" is really what I was looking for. 

[Stormflora]

A bit late to comment, but I just had to come and mention that this tip saved me so much time and effort. I cannot believe I never knew about this trick before. Thank you so, SO much!!