Video Production

Questions tagged [framerate]

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1answer
51 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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0answers
9 views

Convert MPEG-4 movie file to proper pitch and time-length (currently too fast)

I've got a video of The Band's 1970 performance of Long Black Veil. It is in the key of Ab instead of G and the video is shorter in length as a result; it is a half-step up in pitch and x-seconds ...
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1answer
14 views

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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2answers
63 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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0answers
12 views

Why does the number of frames in a video differ?

I have a video file which I want to spilt into individual frames. I have enabled VLC to do this using the frame filter. But each time I play it I get a different number of frames? Why is that?
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0answers
15 views

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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63 views

Convert 4k 30fps iPhone footage (.mov) from variable framerate to constant framerate and keep .mov format

When I shoot video at 4k 30fps with an iPhone 11 and an iPhone XR as secondary camera, the resulting files have a variable framerate (VFR). When I try to edit them in iMovie (I will upgrade to Final ...
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1answer
20 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 ...
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0answers
31 views

FFMPEG - MXF to DASH FrameRate

I'm converting a MXF file to DASH using FFMPEG, but having a hard time maintaing the frame rate, if you can see from the below input file has a frame rate of 25, but the mpd file has a frame rate of ...
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1answer
539 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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0answers
242 views

Want to Blend Frames when Converting from 60fps to 30fps with FFmpeg

I have created some videos of a game I played to upload to YouTube. The game plays at 60fps & the original videos have been recorded at 60fps. However, YouTube re-encodes them down to 30fps using ...
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11 views

Variable audio drift from screen captured VR project in Unity

I'm new to video editing, and I need to sync up the audio and video from two different sources for a Virtual Reality game. Basically, I have the VR itself running in Unity on one computer, with the ...
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106 views

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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42 views

Editing issues with variable framerate input footage (Whatsapp videos)

I have to make a video for social media, mixing several short clips which have been sent to me via Whatsapp. I'm using Da Vinci Resolve 16. When taking the videos into the timeline, I get several ...
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0answers
55 views

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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428 views

FFMPEG concat with constant frame rate

I'm concatenating 2 video files 00000 and 00001: ffmpeg -y -f concat -safe 0 -i file_list.txt -loglevel error -c copy test.mp4 file_list.txt: file '00000.mp4' file '00001.mp4' 00000.mp4: Duration: ...
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0answers
17 views

How to export 20fps footage

I am trying to export a video stiched together with 20fps footage, my quick solution was just to export at 60fps but that leaves me with huuuuge files. Any workaround? Premiere doesn't seem to let me ...
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0answers
9 views

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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0answers
24 views

Video and audio frames not in sync

We have a ffmpeg filter based on avf_concat to dynamically insert frames and audio from a second set of input sources based on external..To substitute video and audio in a live generated HLS compliant ...
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0answers
275 views

FFMPEG Output with wrong frame rate

I am using python to combine several video files together using ffmpeg. Each of the videos files are exactly 20 seconds, 30.00fps, mp4 and the exact same resolution. When I concatenate the files, the ...
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0answers
270 views

ffmpeg: variable framerate with min and max

I know that combining -vsync vfr and -r 30 sets a ceiling to the number of frames in the output. But how do you specify a minimum framerate that should always be produced? As part of an encoding ...
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1answer
20 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. ...
1
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1answer
453 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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0answers
81 views

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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2answers
50 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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1answer
110 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 ...
2
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1answer
2k 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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1answer
2k 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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1answer
912 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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1answer
19 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 ...
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1answer
387 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 ...
3
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1answer
26 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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2answers
630 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 ...
4
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1answer
59 views

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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2answers
778 views

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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1answer
459 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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1answer
922 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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0answers
802 views

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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2answers
35 views

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?
2
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2answers
63 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
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1answer
2k views

FFmpeg encode variable input framerate

I have a Qt application running, i hijack the openGL frameBuffer when a new frame has been rendered. A new frame is drawned when only some changes appear in the scene, so no constant frameRate. Now i ...
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1answer
199 views

How to slow down ProRes file from 25fps to 16fps without re-encoding?

This works to change the speed, but it also changes the codec to MPEG4 Video (H264). ffmpeg -y -r 16 -i at25fps.mov -filter:v "setpts=25/16*PTS" at16fps.mov I need the codec to stay untouched: ...
3
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2answers
36 views

Why would it make sense to not be able to video in 30fps in a 720 resolution, and have to video in a higher resolution to get 30fps?

On my GoPro Hero 7 Black, I can choose to video in 720, 1080, 2.7k, or 4k. I can choose 24, 30, 60, 120, or 240 fps. I wanted to take a video that I didn't need to be able to slow down, and did't ...
3
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1answer
125 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 ...
2
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1answer
873 views

ffmpeg operations yielding changing fps values

I have a video that was rendered as 26.51 fps h.264 into an mkv by my video editor. Calling the file up in ffmpeg it displayed this file as 1k fps, 26.51 tbr. When I applied an operation to separate ...
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1answer
352 views

Is it possible for the viewers to get rid of the 60FPS fast forward effect?

Since I and Everyone else watched too many 24/30FPS throught our lives, whenever We see 60FPS or faster motion picture we feel like its fast forwarded thus makes it terribly unnatural. I want to ...
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1answer
153 views

Can duplicate frames effect motion?

I understand that sometimes when editing, converting, and rendering new videos you can end up with duplicate frames. In other words, two successive frames can be exactly identical. To what extent can ...
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1answer
1k views

What is the difference between audio Sampling rate and Frame rate?

I have a video file with audio. ffprobe reports two different numbers: Sampling rate and Frame rate. I understand the 48kHz rate--there are 48,000 audio samples every second. What is the other number, ...
1
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1answer
1k views

How do I speed up slower video framerates with ffmpeg and get full 240fps and no truncated videos?

I have a whole bunch of sports video clips that range from 6 to 25 seconds each, all recorded at 240fps but slowed down to 23.97, 25, 29.97 and 30fps (so they're in super slow motion). I need to ...
1
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1answer
2k views

Set display time of individual frames in FFmpeg

I have a set of images that I extracted from a GIF animation for the purpose of enhancement (which I have done), but now that it's time to convert the still images into a video (I'm going to use webm ...

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