HitFilm4 Express Slow?

Hi!  I am very much a beginner at video editing so bear with me but I'm having some problems.  I used to edit on my customer built PC,  but now I have a brand new MacBook Pro, which I thought would help improve my editing, but it seems to have just slowed it down more which sucks :( My computer is a 2017 15in MacBook Pro, 2.8 GHz Intel Core i7 Processor, 16 GB 2133 MHz LPDDR3 Memory, Radeon Pro 555 2048 MB/Intel HD Graphics 630 1536 MB Graphics.  I have several large clips that I have to edit down into smaller cuts, and it is being so slow that I can't even edit the video.  Does anybody have any advice for me?


  • meant to say *custom built PC. sorry for the typo.

  • Also, my pc is probably about 5 years old at this point and slower than my Mac so I don't understand why it would be lagging on this computer so bad when a MacBook Pro is built to handle this type of stuff.

  • CleverTagline
    CleverTagline Posts: 3,316 Ambassador

    You said that you have several large clips. How large are they? HitFilm works much better with more small clips vs fewer larger ones.  If a given clip is more than about 15 minutes, it would be wise to split it via an external tool like Handbrake or MPEG Streamclip before working in HitFilm.

    On a related note, are you transcoding these clips before bringing them into HitFilm? If you’re not familiar with transcoding, I strongly suggest watching this video by @Triem23 . It talks about why transcoding is important, and shows several ways to do it using various tools.

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