How to choose Slow Motion or Fast Motion Frame Rates on Panasonic GH4

Typically when you want slow motion from a DSLR / Mirrorless camera you shoot in 60fps and conform it down to your 24p/30p project. It's a bit different with the new GH4 and as someone who doesn't read user manuals, selecting these new framerates on the GH4 was just a little confusing so I thought i'd share this video.

By choosing 96fps VFR will give you 25% playback on your 24p Recording Frame Rate for slow motion. Choosing 2fps VFR will give you 1200% playback on your 24p Recording Frame Rate to simulate fast motion. Fast motion is a great option. Instead of doing interval Time Lapse images that have to be stitched in post, the GH4 will save the entire sequence into a single video file. Very fun feature that opens up more creative shooting options when you're out and about. Stay tuned for more GH4 tips.

Slow Motion GH4 Variable Frame Rate Option 96 fps



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25 thoughts on “How to choose Slow Motion or Fast Motion Frame Rates on Panasonic GH4

  1. @Chad W - The way it works in the GH4 is when you are done recording in VFR, the files is saved as 24fps. So it is automatically playing in Slow motion. When you add a VFR to premiere it will play in slow motion. If you want it to play faster you have to retime the clip and make it faster.

  2. Chad W.

    Same question as Eric from before: Can I shoot all my clips at 96fps and then choose manually in Adobe Premiere which clips play at 100% and which ones play at 25%? OR should I be looking at another option, like just slowing down a 60fps clip? Any tips or pointers would be helpful.

  3. Eric

    I want to shoot my son's hockey game with some slow motion. Can I shoot all my clips at 96fps and then choose manually in Adobe Premiere which clips play at 100% and which ones play at 25%? OR should I be looking at another option, like just slowing down a 60fps clip? Any tips or pointers would be helpful.

  4. Really really love this camera. We're using it for aerial video, but keep coming up with more slo-mo, fast-mo projects. can't get enough of it.

  5. Jason

    Keep in mind when in Variable Frame Rate you loose all audio capabilities. NO AUDIO!! Just make sure to switch your VFR to off when audio is required.

  6. TT

    Thanks! I read the manual, and it was not clear to me how to set the slo-mo, so this was very helpful.

  7. Brilliant helpful video - thanks so much. Got my GH4 yesterday given UK deliveries behind US. You have saved me a lot of time reading through manual trying to discover how to do slow mo and speed up.

  8. Emm

    Post author

    @Denny - The VFR (variable frame rate) option is only available in certain resolutions and frame rates. It is not available when you are in 4K.

  9. Hi Emm, thanks for tip. I didn't hear you cover this issue, but it looks like this option is not available for 4k. So, if you're shooting 4k, and you need to shoot slow-mo or speed things up, you will still need to go into the camera and change resolution to 1080p before changing frame rates. Am I wrong?

  10. Emm

    Post author

    @Daniel Hughes - Of each tests that we've performed we did not have that experience. It was instantly saved to the card without 'buffering', but at that time we were using very fast Sandisk Extreme Pro 95MB/s SDXC cards. I did not experience this with my Samsung SDHC cards also.

  11. When you hit stop recording while filming at 96fps on the gh4 is there a buffer wait time to convert that file to 24fps like when filming slow motion on the sony fs700?

  12. Anyone notice that the bitrate drops from 200mbps to 26mbps at 96 frames, then the bitrate goes up as you increase the frame rate? Great picture but falsely advertised that it is 200mbps at 96.

  13. The shutter speed depends on what you need to do. For example if you want to slow more down using a plugin like Twixtor pro, you need to have less blur possibile, so you need to set your shutter at the highest.

  14. @Ron Baselice @emm

    I don't have one (yet), but the GH4 has the option to change from shutter speed to shutter angle, correct?

    If so, you could just set the shutter angle to 180ยบ and it'll adjust the shutter automatically when you change the variable frame rate.

  15. Emm

    Post author

    @Matt - I'll check, but I know you can customize the Quick Menu button with certain features.

  16. Matt

    Emm, can you set the variable frame rate to a custom setting on the dial? Seems fairly quick to just pop into the menu, but flicking the dial would be great.

  17. Ron Baselice

    Thanks, Emm, helpful as always. I was afraid I would have to read the manual, lol. got mine on Friday.Shot a still assignment with mine yesterday at 6400 ISO. Images are usable..... Each generation gets better and better.....

  18. Emm

    Post author

    @Ron Baselice - There is no audio. You can experiment with shutter speed, but yes ours was 1/200ths. It really depends on how fast your subject is moving and how sharp you want those images to be.

    The faster the shutter speed the less motion blur you will have. There is one scene with the fast water drops which you can see many droplets are blurred out. If the shutter speed was faster each drop would have been sharp.

  19. Ron Baselice

    Two question.Do you change the shutter speed to 1/200 or keep it at 1/50. And does the audio record in sync or is it in slow mo

  20. Emm

    Post author

    @Paul - Thanks, yes 96fps is 25% the speed or 4X slower. Basically 96fps % 4 = 24fps / or 24fps X 4 = 96fps. Works out perfectly. When choosing 30fps you still have the option of 96fps but playback will be 31% of normal playback. Not as slow, and the math doesn't come out perfectly since nobody uses 31fps as a playback. For the average consumer, they probably won't pixel peep this to death.

  21. It will have been helpful to clarify that choosing 30 fps or 24 fps as a target frame rate is not an inconsequential option, but rather significantly affects the quality of slow motion; true 96 fps motion is only available in the 24 fps container.

  22. I'm trying real hard not to lust after this camera... would appreciate if you find something really crappy about it so I will be more satisfied with what I already have.

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