Questions tagged [framerate]

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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Frame rate fluctuation

I want to get a pure VHS effect on my video. So does anyone know to make the frame rates fluctuate as in a old vhs tapes where the video speeds up or slows down subtly at some parts?
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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 ...
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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 ...
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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 ...
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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 ...
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312 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 ...
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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 ...
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Can ffmpeg drop the most similar frames when changing FPS?

I'm working with footage from a arcade game that runs slightly slower than NTSC framerate, however the capture device has duplicated frames (approximately 1 in 24 though not 100% predictable) to bring ...
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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 ...
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Turbulent displace effect on every 8th frame using FFmpeg

I'm trying to apply a turbulent displacement effect that changes distortion every 8th frame in a 24 fps video. If this article is accurate, turbulent displacement is created by using a displace and ...
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How to record video of television/monitor without black banding

I am planning to record video tutorials with a standard high-definition webcam from my computer, but I would like to have the facility to work with a whiteboard with PowerPoint presentation. I do not ...
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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 ...
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Explain like I'm 5: 50fps and 29fps on same timeline, premiere pro 2020

Simple as, I have 50fps and 29fps footage and I need them on the same timeline. I understand about interpreting footage, and I want the 50fps to be slowed down by at least 60%. What sequence ...
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1 answer
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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 ...
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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 ...
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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 ...
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A framerate of 30.30 has become common the past couple years. What is it about the number 30.30 that is significant? Why not an even 30, for example?

I typically resample the framerate to 30 when I'm encoding (much of my source video was streamed and has unreliable native framerate). But these 30.30 videos I tend to leave at 30.30 just because I ...
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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), ...
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268 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 ...
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how do I create 23 fps proxies for footage shot in 30 fps and interpreted as 23 fps

I am trying to create 23 fps proxies for footage shot in 30 fps and interpreted as 23 fps I watched and carefully followed the Youtube video that explains exactly this and I am still getting out of ...
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2 answers
248 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 ...
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ticker text does not run really smooth

I want to create a ticker text video like the news ticker you see sometimes in TV. So I use ffmpeg -loop 1 -i Transparent_800x20.png -vf drawtext="fontsize=16:fontcolor=black:fontfile=...
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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 ...
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1 answer
1k 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 ...
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Changing FPS from 29.97 to 30 in ffpmeg creates short blank at end of video, audio is fine

I am trying to merge 5 parts of a continuous video using ffmpeg. For some reason, the 1st part is encoded at 29.97 FPS, while all the others are at 30 FPS. part #1 : 29.97 fps, 29.97 tbr, 19200 tbn, ...
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If my footage is 15fps, why does Premiere try to create a 29.97 fps sequence when I create a sequence from it?

I'm editing some footage from Eecamm's Skype recorder. The footage appears to be 15fps 1280x720. In Premiere CC 2019, when I drop it onto the New Sequence icon, the sequence automatically generated ...
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What is the best monitor refresh rate (in Hz) to remove flickering when filming at 24 frames per second with a 1/50 shutter speed?

I tried setting the monitor to 50 Hz and 100 Hz, but I still see flickering. Everything looked fine when the monitor was set to 60 Hz and the shutter speed to 1/25. That being said, I am trying to ...
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1 vote
1 answer
34 views

syncing slideshow with music

So im currently creating a music oriented slideshow with a bundle of images that needs to be changed each beat of the music. Problem is, the music is 129 bpm which results in 2.15 beats per second. ...
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1 vote
1 answer
1k 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 ...
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1 vote
0 answers
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Screen-Video with 7 FPS (in Davinci Resolve - or other tools?)

I currently edit/cut a lot of computer screen recording footage. The original mp4 files have 7 FPS and I am totally happy with that quality. If I now edit the files in Davinci Resolve 16, the lowest ...
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1 vote
2 answers
182 views

How to stop horizontal scrolling lines caused by fluorescent light (USA and NTSC)?

I'm trying to record something for a school project and my lighting is underneath fluorescent lighting. My camera is set to 30 fps but records at 29.97 fps (seen on pc). I've tried to copy the clip, ...
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1 answer
368 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 ...
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2 votes
1 answer
4k views

Sony Vegas - render allowing source to adjust frame rate?

I have a bunch of mobile phone videos (different phones), that I want to render to one single video using sony vegas. Should I check allow source to adjust frame rate when rendering? Or should I ...
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2 answers
7k 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 ...
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1 vote
1 answer
2k views

Variable bitrate for AAC - how to reach it?

I tried encoding audio stream into AAC with a variable bitrate mode — I followed the advice from FFmpeg VBR Settings and changed my original option -b:a 128k to -q:a 1.3 in this original command ...
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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 ...
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916 views

FFmpeg convert to HD video format that Adobe Premiere Pro will not crash on?

My problem is somewhat similar to others asked on the site in recent years, but none of those solutions were quite right for my problem: I have a series of frames from a video recorded at roughly 30 ...
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3 votes
2 answers
39 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 ...
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1k 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 ...
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4 votes
1 answer
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What is the proper notation for a frame rate that is less than 1FPS?

For example should 1 frame per minute be 1FPM or should it be expressed as FPS using a decimal.
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Using 60 fps footage on 23.976 sequence without slowing down or dropping frames

I just recorded a 4k 60 fps clip from my GoPro and dropped it with some other clips on a timeline which is 23.976 fps, and the 60 fps clip looks really weird and glittery. Is there a way to play ...
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715 views

Why both videos are of same file size?

I am using ProMovie Recorder to record high quality videos using iPhone X, and I noticed a weird thing today. Here's what I did: I recorded a 4K 60fps video for 6 seconds (HEVC encoding). I recorded ...
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1k views

Why are there missing frames in the Vegas Pro editing timeline?

I found the weirdest thing in Vegas Pro 13. I was trying to verify the exact frames of a generated file, so was looking for a zero number frame to drop it into the timeline. I was surprised to find ...
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ffmpeg convert H264 CFR + timestamps to VFR

I have a H264 video source that was recorded with variable framerate (VFR) and a text file with frame ID, timestamp pairs that looks like this: frameId,timestamp 1890413473,13792093 1890413474,...
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2 answers
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Ideal frame rate for video with moving objects

I am working on a drone to capture a soccer game. What should be ideal minimum frame rate for the camera? Does it depend on velocity of objects(ball, players) in the game?
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