Gopro MP4 video recorded in high speed mode

[David27636718sks4]

How can I slow down a gopro MP4 video that has been recorded in a high speed mode?

[Steve Grisetti]

Premiere Elements doesn't work well with extremely high frame rate video. You can slow down any video you add to a Premiere Elements project, but you'll be slowing down 30 fps or maybe 60 fps video no matter how fast your original video was recorded, if that's what you're asking.

[David27636718sks4]

Thanks Steve, it is a video of a young dog learning to search for a missing person. I do not need to keep the sound but it would be good to slow it to a speed where the dog is not looking quite so manic. It has been recorded in one of the timewarp/timelapse modes. I will have a try later today and adjust the frame rate. I am assuming that I load as is and resave at a lower frame rate? Kind regards.  

[Steve Grisetti]

It will not load as a lower frame rate. What ever frame rate it currently is will be interpolated at 30 fps.

Do you know the specs of this video? If not, open it in the free download MediaInfo. In MediaInfo, set View to Text and then copy the text from this report and paste it to this forum. Once we see this detailed report we'll better be able to advise you how the video will perform in Premiere Elements.

[David27636718sks4]

General

Complete name : C:\Users\dmlum\OneDrive\05 Video\Video for
Process\Lowther Castle 20221219\GH0#0025\GH010025.MP4

Format : MPEG-4

Format profile : Base Media / Version 1

File size : 690 MiB

Duration : 1 min 13 s

Overall bit rate mode : Variable

Overall bit rate : 78.8 Mb/s

Encoded date : UTC 2022-12-19 12:30:27

Tagged date : UTC 2022-12-19 12:30:27

xyz : +54.6089-002.7344/



Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High

Format level : 5

Format settings, CABAC : Yes

Format settings, Referenc : 2 frames

Codec ID : avc1

Duration : 1 min 13 s

Bit rate mode : Variable

Bit rate : 78.1 Mb/s

Maximum bit rate : 156 Mb/s

Width : 1 920 pixels

Height : 1 080 pixels

Display aspect ratio : 16:9

Frame rate mode : Constant

Frame rate : 29.970 FPS

Original frame rate : 59.940 FPS

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 1.256

Stream size : 684 MiB (99%)

Title : GoPro AVC

Language : English

Encoded date : UTC 2022-12-19 12:30:27

Tagged date : UTC 2022-12-19 12:30:27

Color range : Limited

colour_range_Original : Full

Color primaries : BT.709

Transfer characteristics : BT.709

Matrix coefficients : BT.709

Codec configuration box : avcC



Audio

ID : 2

Format : AAC LC

Format/Info : Advanced Audio Codec

Codec ID : mp4a-40-2

Duration : 1 min 13 s

Bit rate mode : Constant

Bit rate : 192 kb/s

Nominal bit rate : 48.0 kb/s

Channel(s) : 2 channels

Channel layout : L R

Sampling rate : 48.0 kHz

Frame rate : 46.875 FPS (1024 SPF)

Compression mode : Lossy

Stream size : 1.66 MiB (0%)

Title : GoPro AAC

Language : English

Encoded date : UTC 2022-12-19 12:30:27

Tagged date : UTC 2022-12-19 12:30:27

[John T Smith]

convert to constant frame rate with https://handbrake.fr/ open source transcoder/converter

[Steve Grisetti · Accepted solution]

I agree with John. If you convert the file as described in this video, you'll have no problems working with it and even doing slow motion in Premiere Elements.

[David27636718sks4]

Thanks Steve, John, I will give that a go. Kind regards and seasonal
greetings from the UK.



David

[David27636718sks4]

Thanks Gents, I have slowed it down with Clipchamp at the expense of the sound, I will have another look at the video supplied by Steve over the weekend, most Xmas family commitments will be completed by then. The output at 0.2 speed is (hopefully) attached.  https://youtu.be/K8Zvndn44CI   you can only imagine what it was like at full speed. Kind regards. 

[David27636718sks4]

Found that the lowest speed obtainable on Handbrake is 5FPS, Clipchamp can give 2 FPS, for most purposes the difference would be negligable. With my supersonic Working Cocker Spaniel it is a noticeable difference. I will keep both apps to hand for future incorrect selections. Kind regards and a Happy New Year. David