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Questions tagged [framerate]

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3 votes
1 answer
205 views

Dropping Frames when Playing back Sped Up Footage in PP CC 2018

My playback of footage that is sped up 500% is awful in PP CC 2018 on my desktop but fine on my laptop. My CPU utilization is not maxing out on my desktop but I'm still dropping 90% of my frames. I'm ...
1 vote
2 answers
37 views

How can I choose the correct shutter speed to avoid banding when taking video of projected video?

I need to record video projected onto a wall or screen by an Optoma EP726 digital projector. I need to record it on a Canon EOS 77D at 23.976fps. I first tested videos of various frame rates, all ...
5 votes
1 answer
2k views

Extract the frame (in image format) at exactly every minute (or second) from a video (by ffmpeg)

Motivation: I would like to seek the frame, then take high quality and exact time screenshots (images) from a video. The video is length is 00:48:43.71 and 23.98 fps (we can think it is 24 fps, isn't ...
0 votes
3 answers
1k views

Increase framerate in post-production?

I know this is doable because many higher-dollar televisions on the market today are able to take a 24fps input and smooth out the frames for an effective framerate up to 960fps (for Sony). Would it ...
4 votes
1 answer
251 views

Is there a NLE that supports Variable frame rate?

Now before you quickly jump in and say: Premier got an update... Use handbrake... What I'm asking none of the big players seem to support. Rendering a video that's frame rate changes through the ...
0 votes
1 answer
37 views

Vegas Pro 13 : Project's and Timeline's framerate are suddenly not the same

So here's the thing : I'm editing on Vegas Pro 13, 25fps according to my origninal files. I just imported some sound I "mixed" externally. And now, my timeline acts in 24fps although my project is ...
2 votes
1 answer
505 views

Framerate and timestamps in SubRip subtitles

I don't understand why the framerate of the video should affect timestamps in SubRip (*.srt) subtitles. If I am correct, when you convert a video from one framerate to another, the length of the ...
1 vote
1 answer
2k views

Editing a Mac Screen Recording in Premiere Pro causes image fragmentation

I'm making some tutorials about how to use a website. I'm using the built in Apple Screen Recording to record the screen on a Macbook Pro with a retina screen. I'm then loading the resulting .mov file ...
0 votes
1 answer
598 views

Adobe After Effects - Why is my position marker not set to a frame?

In after effects, one of my compesitions is comprised soley of static images, vectors, solids, and other non-movie footage. One such static image layer lasts from frame 0 for 100 frames. Another user ...
1 vote
1 answer
2k views

How to change Timeline's output time from "Frames" to "Timecode" (Premiere Pro)

I was editing a video for a friend when I accidentally changed my Timeline's timestamps from "Timecode" to Frames" It has been really frustrating to figure out what second of footage I am on when ...
1 vote
1 answer
43 views

Kdenlive project stuck on 25 fps

I have a Kdenlive project that was started with 25 FPS and now I want to switch it to 30 FPS, but no matter what I do, it stays on 25 FPS and produces 25 FPS output files during rendering. The title ...
1 vote
1 answer
376 views

How to encode scenes with different CRF into a H.264 MP4 video with a variable frame rate?

Source Material Having many scenes which essentially are still frames (for many seconds) Commonly found in: Slideshows, Screen Recording or Software Mockup/Prototype ✅ This kind of source material ...
0 votes
0 answers
11 views

Galaxy A03s Not Recording at 30 FPS Constant - Mouth Movement and Audio Out of Sync

I have an unlocked Samsung Galaxy A03s [1]. Per the Samsung website, it's supposed to be specked at FHD (1920 x 1080)@30fps. Unfortunately, I almost never get it to actually record at 30fps constant. ...
0 votes
1 answer
29 views

Displaying High Framerate Content on a Low Framerate Display

What are the best practices for scaling down framerate of a static video. For example, consider some footage captured at 360 FPS from a videogame. How would one scale this down for a 60 Hz display or ...
1 vote
1 answer
828 views

Difference Between 50i and 25p Video Formats

I have a Sony Alpha A5000 camera, and it has quite limited video recording options. In AVCHD format, there are basically two options: 50i and 25p. I do know the basic difference between these two scan ...
0 votes
1 answer
84 views

h264 Settings for Motion Tracking & Analysis (technical photography)?

I'm trying to do "scientific" video motion analysis. Right now I'm using a Raspberry Pi camera, which records natively in h264, which then needs to be converted/wrapped as MP4. Is h264 an ...
1 vote
1 answer
211 views

ffmpeg: Changes to FPS only work if I don't include audio in the export, how can I keep audio and choose the FPS value?

How can I export a video to .mjpeg at my selected FPS value (7 FPS for stop motion video) while including audio in the export? I use the -i input command in ffmpeg to include my .ogg audio file: ...
2 votes
1 answer
116 views

What frame rate is the iOS camera aiming for when it shoots 24fps VFR?

Almost every time we deal with footage that was shot on an iOS device in a post production workflow, we find it's Variable Frame Rate (aka VFR) rather than Constant Frame Rate (CFR). The hardware ...
1 vote
0 answers
11 views

Restoring High Frame Rate Video After Forced Slow Motion Conversion

I'm dealing with a tricky situation involving high frame rate video recording and need some guidance. For an experiment, I needed to record a video at a high frame rate. The only way to achieve this ...
1 vote
1 answer
38 views

Do mobile phones really record in these odd framerates?

I received several video files for editing that were recorded on a mobile phone. (Samsung S21, if it matters.) When I brought the files into VEGAS (still using version 15.0 Platinum), it reports some ...
2 votes
0 answers
13 views

Using video to prove an alarm is flashing

I'm in a bit of an annoying problem. I know nothing about video, so sorry if I'm using wrong terminology. I live in an apartment buliding in downtown Tel Aviv. On the ground floor of my building there'...
1 vote
0 answers
206 views

ffmpeg: How to decimate frame rate without recompressing, for I-Frame only video, like ProRes?

I use a capture device from Atomos to capture video in ProRes format over HDMI. The issue is, this device will only capture video in the exact same frame rate as the HDMI signal's refresh rate. So a ...
1 vote
1 answer
39 views

2 video files, one has the audio with 15FPS, the other has the video with 5FPS, audio is out of sync

I'm trying to sync the audio and video of 2 different files, one is a 15 FPS webcam stream with audio and the other is a screen share with 5 FPS. This is an educational setting. I'm trying to do the ...
0 votes
2 answers
2k views

Why do we still shoot 23.976 if NTSC and PAL have been replaced?

I watched this video and had loads of questions. If NTSC ran into problems with colour and therefore slowed down 30 to 29.976, and 24 to 23.976, why didn't PAL have the same problems and slow down 25 ...
0 votes
1 answer
658 views

frame rate vs extracted frames

Newbie here. This is my input.mp4 video, according to VLC: codec: H265 – MPEG-4 AVC (part 10) (avc1) Encoder: Lavf58.29.100 FPS: 70.476432 Resolution: 1824 x 1216 Duration: 0m31s I need to ...
1 vote
3 answers
14k views

Show current frame or display timecode (frames) on MPC-HC?

Does anybody know if this is possible? I know how to encode timecode display using ffmpeg but I would like to avoid this step and find a way in MPC (currently my favorite video player). CTRL+J doesn't ...
1 vote
0 answers
56 views

Recovering 18fps super-8 from NTSC 59.94i: Duplicate frame removal?

I have a VHS tape made from 1970s-era super-8 home video footage (the originals for which are lost), and am trying to make what improvements I can. I used a Blackmagic UltraStudio to perform raw frame ...
1 vote
1 answer
159 views

Framerate dilemma

I'm having a hard time deciding what framerate I should use. I live in the PAL region (50Hz), and when I use 25 fps, I can use any shutter speed and never have light flickering. This is convienent ...
0 votes
1 answer
219 views

Is it possible to use high framerate to achieve better stabilization outcomes in DaVinci Resolve?

DaVinci controls regarding stabilization are very limited, and there seems to be no documentation on how to achieve the following. Given moderately shaky 100fps footage, one wants to produce a 30fps ...
0 votes
1 answer
462 views

How can I convert a 30FPS video to 50FPS video without affecting the length of the video?

How can I interplote a 30FPS video to a 50 FPS video without affecting the length of the video? I have used the VSDC video editor to do so. I have set the reframing mode to optical flow. However, I ...
1 vote
0 answers
133 views

Any reliable benchmark for frame interpolation?

I want to use frame interpolation to convert videos from 30 FPS to 60 FPS. I found many programs for that: Davinci Resolve, Flowframes, SmoothVideo Project, Topaz Video Enhance AI (Chronos model), etc....
0 votes
1 answer
199 views

h264/hevc: non-integer frame rates

I'm having a hard time understanding how non-integer frame rates are implemented in h264 and hevc. For example, I just stepped through a 23.976fps video frame by frame using Shotcut, and looking at ...
1 vote
0 answers
86 views

Sony a6400 Slog2 and minimum shutter speed?

I'm starting with my sony a6400 to get into videomaking (or at least trying to). I'm shooting a short movie in Slog2 30fps 1080p, but I noticed that I can't set my shutterspeed to be the double of my ...
1 vote
0 answers
620 views

Can I fix choppy video shot at wrong shutter speed?

I shot some video at 60fps with the intention of putting it in a 24fps timeline slowed down. (59.97 and 23.976 actually) Usually I shoot at a shutter speed of 1/125 for shots like this. I shot some at ...
0 votes
2 answers
7k views

Convert variable framerate ~60 FPS to constant 60 FPS losslessly

I have gameplay footage recorded with ShadowPlay (“GeForce Experience”) at 60 FPS, which as I understand results in variable frame rate, because the game drops frames sometimes. However, trying to use ...
0 votes
0 answers
101 views

FFMPEG: Why can't I work in frames instead of HH:MM:SS?

I have a video-only stream that I removed the audio from without re-encoding. The video information is as follows. hevc (Main 10), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x1608 Frame ...
0 votes
0 answers
603 views

Confused about methods to speed up video

I have some CCTV recordings that I would like to speed up (like a timelapse) and I am confused about which method to use. I tested Avidemux and VSDC Video Editor and they both speed up videos in ...
0 votes
0 answers
1k views

MP4 file has incorrect length (duration) and plays back 5x slower than it should

I have five GoToMeeting (GTM) .mp4 recordings that I saved and downloaded from a five-day class I was teaching. Each recording represents each day's appx. 8 hour class duration. I am importing them ...
1 vote
1 answer
79 views

is it possible to discard duplicate frames in a video?

I have a 2 minute game capture that ranges from 60fps to 2fps but the capture is in 30fps. is there any way to discard the duplicate frames so that the video looks smooth? I was thinking of extracting ...
1 vote
1 answer
2k views

Converting Video from 30 fps to 29.97fps so Audio Syncs to Other 29.97fps Videos with ffmpeg

I have three videos that I am trying to sync so I can setup a multi-camera editing project (I'm using Vegas Pro) Two are at 29.97fps and one is at 30fps. If I manually sync them all at the start, by ...
1 vote
1 answer
469 views

What is the meaning behind video and audio framerates being different?

I am doing some transcoding via ffmpeg and am noticing video and audio FPS differing greatly. During playback there is no issue, everything is working as expected. So I am trying to understand what it ...
1 vote
2 answers
676 views

Halve framerate without complete re-encoding

Is there any tool that can manipulate / transcode h264 or h265 video streams throwing away approximately half of the frames, without performing a full re-encode? I'm thinking it would be theoretically ...
0 votes
1 answer
6k views

How to double video frames without any duplicate frames

My video details : DV-PAL 720x576i , 25FPS , duration=20s , frames=500 I need to increase (double) the video frames without any duplicate frame. I used the following commands to increase (double) ...
0 votes
2 answers
2k views

how can I convert slow motion video into normal speed without losing fps or audio sample rate?

I want to download a slow-motion video playlist (with the frame rate of the videos being either 480 fps or 1000 fps.) and be able to speed up the videos at least 16x without losing the frame rate or ...
3 votes
2 answers
43 views

Use of time remapping to stabilize the velocity of a rotating object?

I have a video of myself inside of a human-powered rotating drum. This video's shot at 60 frames per second, but due to to the unreliable velocity of human operators, this drum rotates at different ...
0 votes
1 answer
40 views

Why don't I see flickering in artificial light despite using the wrong framerate?

I've read on several sources that when using artificial light, in Europe (50Hz mains frequency) you are supposed to record on 25/50fps or you can induce flickering. Makes sense in theory and all, but ...
3 votes
2 answers
90 views

Two video sources framerates vary by .01 FPS. Will this cause problems?

I'm just getting started and have some user-level equipment, not professional grade. My Sony Handycam outputs MTS and MP4 at 29.97 FPS. My LG K30 smartphone outputs MP4 at 29.98FPS Using Davinci ...
2 votes
2 answers
2k views

How to handle video with different frame rates in Lightworks?

Most video editing software allows me to import video of different frame rates, but Lightworks either does not have this feature still, or I cannot find it (on Lightworks or on the internet). Does ...
0 votes
0 answers
238 views

Why do we still have difference between Media Time and SMPTE Time Code?

I'm implementing a web application which works with video sources with SMPTE time codes printed on it. Often the SMPTE and media time differs, my understanding of the reason based on what I have read ...
0 votes
1 answer
216 views

Are there any Windows video players that don't stutter when looping?

Title. I have spent the past few hours trying to smoothly loop a short 6-second animation I made in Blender. No matter what I use (VLC, Windows Movies and TV, heck I even tried installing MPlayer), ...