Questions tagged [framerate]

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11
votes
7answers
14k views

Are there only a few standard video frame rates?

In modern digital video, can a video file be marked with any arbitrary frame rate? Or are only a few specific frame rates widely supported? By "modern" I mean software players like Quicktime, VLC, ...
9
votes
2answers
9k views

Does raising the framerate while not changing the bitrate result in quality loss?

AFAIK, the bitrate is the number of bits per second. So let's say I have two videos, both using the same codec, bitrate settings and resolution. If the first one has a framerate of 25fps, but the ...
7
votes
3answers
5k views

ffmpeg- What's the difference between “NN000/1000 fps” and “NN000/1001 fps”?

I'm trying to select the correct capture options for ffmpeg and I'm confused by this kind of listing: [decklink @ 00000000010564c0] 17 3840x2160 at 24000/1001 fps [decklink @ 00000000010564c0] ...
7
votes
4answers
8k views

Minimal working frame rate for H264 codec

When making a video from single image files whereas each image file should be visible for about one second, it does make sense to encode a video with an extremely low frame rate such as 1 frame per ...
6
votes
2answers
2k views

Handling Frame Rate for Movies with Slow Motion

I know that 24fps is the standard rate for movies. Presumably, if I want to shoot for a movie I should shoot at 24fps, however if I want to add slow motion effects in the movie I know that I need to ...
5
votes
2answers
3k views

Low cost DIY high-speed video camera

I always have been intrigued by high speed/fps video. And I have looked online how much it would cost to buy one myself. However they are often very expensive, I do not know what the average price ...
5
votes
2answers
1k views

Are the properties (bitrate, fps) of my h.264 video OK for the web?

I'm converting a Flash vector animation to an mp4 video for the web. After trying and failing with Swiffy, it's the only way I have of preserving the work "for posterity", once Flash is gone. When ...
5
votes
2answers
3k views

Shutter slower than video FPS

I'm trying to shoot low light video on my RX100 m3 and I want to make the best of it. So it would make sense that the ideal setting (in many cases) would be to open the shutter for as long as it can ...
5
votes
3answers
7k views

Recording and playing video with variable frame rate

We are using a streaming camera to record and to play back surveillance video. This camera sends a RTSP stream which will be recorded by our application as a H264 video. In our application, the ...
5
votes
2answers
375 views

Replacing footage to a video with different frame rate - how to make timeline clips not slip?

When I replace a footage to another video file which has got different frame rate from the old, the clips on the timeline slip because of the frame rate change. If I go to Modify -> Interpret footage,...
5
votes
1answer
1k views

Adobe Encoder fps and duration doesn't match

I have After Effects project file 25 fps, 29 seconds duration long. After exporting i get 725 png files - looks normal so far. But then i merge it to mp4 using Adobe Encoder, I get total 24 seconds ...
4
votes
3answers
3k views

Why more than 10 FPS is needed

As we know that out brain can process at most 1/10th of a second then why we go beyond the 10 FPS as our brain should not be able to process more than the 10 FPS of a scene. whats is the logic behind ?...
4
votes
3answers
318 views

Shutter speed when recording with DSLR

I know that the shutter speed should be approximatively as twice as much the fps. However, I know people who tune the shutter speed to any value they need it to achieve the correct exposure. They say ...
4
votes
2answers
263 views

Why is Olympic slow motion footage sharp with little motion blur?

Do the 'broadcast quality' cameras used in the 2016 Olympic Games have higher than normal frame rates? It seems that their slow motion footage is smoother, sharper, and less motion blurred than ...
4
votes
3answers
9k views

Interpreting 60fps to 24fps in Premiere Pro

I shot some footage on a Sony a7s at 59.94 fps so that I could slow it down in post to achieve a smoother camera movement. But when I interpret it to 23.976 fps in Premiere, it looks like it's ...
4
votes
1answer
50 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.
4
votes
1answer
83 views

software for frame images to video with changing framerate?

I've got some frames that were captured over 24h at 2 frames a min. I want to convert them to video BUT with different playback speeds depending on when they were shot. I want to be able to use ...
4
votes
1answer
2k views

Is it worth exporting at the exact 29.97 FPS from Photoshop or just use 30 FPS?

My live action footage is Frame Rate 29.97 FPS. When exporting frame by frame animation from Photoshop that I intend to composite on top of the live footage. Since I have the ability in Photoshop to ...
4
votes
1answer
462 views

CMOS readout time, frame rate, and delay between frames?

I know that in CMOS sensor, the exposure is perform in line by line. I can assume that the delay between the exposure of two consecutive lines is equal the readout time for one line. So the readout ...
4
votes
0answers
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 ...
3
votes
3answers
88 views

In video, can previous frames effect results seen in subsequent shots?

While watch a shot on YouTube at .25 normal speed, I noticed two distinct images of the rocket fired at the ship from (25-26s). Is this an effect of the video, the film, or the result of a video ...
3
votes
2answers
6k views

Are there any free ways to increase the framerate of a video?

Suppose I have some footage at 30FPS that I'd like to have a copy at 60FPS with tween frames generated by interpolation (at this point I don't care too much about potential quality or artifacts.) And ...
3
votes
1answer
1k views

Why is ffmpeg outputting a 600fps video from a 120fps video input?

I have a very short 120fps video. ffprobe input.mp4 shows 118.99fps: ffprobe version 3.0 Copyright (c) 2007-2016 the FFmpeg developers built with Apple LLVM version 7.3.0 (clang-703.0.29) ...
3
votes
2answers
4k views

Do I need to convert 60fps to 30fps so it will be reproducible?

I just bought a GoPro Hero 3 Black Edition. I have been testing out two modes: 1080p at 30fps and 720p at 60fps. I have noticed that when reproducing the videos with 720p at 60fps they are not ...
3
votes
2answers
46 views

Shutter Speed or frame rate we looking at when dealing with flickering issue?

I'm using SONY RX10M3 to shoot video at 1000fps. But using conventional lighting system I get flickering. Now I'm planning to buy a LEDs light by STRATUS, which they stated that : Flicker free at ...
3
votes
2answers
5k views

What happens to frames when you speed up a video clip?

There is a 60 FPS video clip, with 1 Second total duration (So it has 60 frames, each 1/60s duration) I make it 2× faster. So it's has a 0.5s total duration. How about frames? How many frames are ...
3
votes
2answers
259 views

Specify a custom “Movie rec. size” on Canon Rebel

Can you specify a custom "Movie rec. size" on Canon Rebel? I have an SL1, and I'm trying to record at 1280x720 with 30fps. When I go the "Menu" screen I see that you can set "Movie rec. size." It ...
3
votes
1answer
559 views

Encoding 720p 29.97 fps video, options in Adobe Media Encoder are 23.976, 24 or 59.94 fps

A little confused here, I have a video file that's 720p @ 30.303 fps. Working on it in Premiere Pro CC 2014 and ready to encode the file and the options I get for h.264 Blu-ray under frame rate are ...
3
votes
1answer
9k views

H264 framerate information?

Does raw H264 data (stripped from an RTP stream) contain information about the framerate? Or is the framerate derived either from RTP timestamps for stream reproduction or written the container files ...
3
votes
1answer
142 views

Slowing down video vs higher framerate recording

What is the difference between slowing down the video in software compared to actual shooting at higher framerate? For example, i have a camera that shoots at 60fps and want to slow it down to ...
3
votes
2answers
3k views

How to convert variable frame rate videos?

I have some old 3GP (mp4v codec)videos from my HTC desire S and when I try to drop them into Vegas they won't open so I decided to convert them to a format that would open. However when I convert to a ...
3
votes
1answer
52 views

What are the main limitations on using the following setup to boost frames per second capturing?

Suppose I have two identical cameras, a red camera and a blue camera, that can both shoot videos at 1000 frames per second. If I set them up in the following set up, using a half-silvered mirror to ...
3
votes
1answer
125 views

Does filming in 30p as opposed to 60p provide a brighter video?

Does filming in 30p as opposed to 60p provide a brighter video? Would it be better to film at perhaps 24p in darker circumstances?
3
votes
2answers
6k views

25 frames per seconds and 30 frames per seconds footage in one seq

I filmed a short interview with 2 cameras. one shots in 25 fps and the other in 30 fps. When I open the sequence in Premiere I have to choose one frame rate and then one of the clips is out of sync. ...
3
votes
1answer
1k views

Footage feels “faster” when exporting from After Effects

I'm editing a project with premiere, and using After Effects to edit some of the footage (color corrections, some masking etc'). All raw footage was captured with a Canon 550D, 1280*720 at 50fps. My ...
3
votes
1answer
4k views

720p 60fps playing in slow motion need real time speed?

I just got a kodak playsport zx5 and shot some video of a volleyball game at 720p 60fps. I figured since the ball was moving so fast i'd need the 60fps to capture the games clearly. I just downloaded ...
3
votes
1answer
25 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 ...
3
votes
1answer
113 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 ...
3
votes
2answers
3k views

Output is shaky after exporting an edit of several clips in Premiere Pro

I am quite new to video editing, and I am trying to make a clip out of different source footage: sources made from my DSLR are at 24FPS sources from my video camera are at 24.97FPS Other sources (...
2
votes
3answers
3k views

Is it meaningful to raise frame rate, if so what is the best option?

I have a 3000 by 3000 VR video encoded in H264, the frame rate is 30fps. Now I want to raise the frame rate to 60fps, I am using this command ffmpeg -i input.mp4 -r 60 output.mp4 My questions are: ...
2
votes
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 ...
2
votes
2answers
2k views

47.952 instead of 48 fps?

I work with some clips, all taken from the same camera, which have the exact following characteristics (apart from the duration of course): Video: 00:03:21.806, 47.952 fps progressive, 1920x1440x12, ...
2
votes
1answer
287 views

fps resampling dilema

I want to mix some vacation clips into a single video. The sources I have are: 48 fps 25 fps I don't care whether the end result will be at 24 or 25 fps but I do want to maintain the best viewing ...
2
votes
1answer
4k views

What's the difference between 29.97p and 29.97fps?

I'm working in Premiere and I've got one video file that isn't working for me, it's just showing as green. My initial research said to make sure the aspect and frame rates matched up between the video ...
2
votes
1answer
1k views

Matroska format's framerate is not accurate with certain values

If the Matroska format is used, in certain framerates it doesn't record at exact input framerate, but rather at a little higher than the input framerate. As an example: ffmpeg -video_size 1920x1080 -...
2
votes
1answer
48 views

fps changes during the record

I recorded myself using my LG G3 smartphone. Now I see that one video is 28.97 fps, another video is 28.81 fps according to the QuickTime Player stats. When I edit the videos in Premiere, the sound ...
2
votes
1answer
1k 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 ...
2
votes
2answers
31 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 ...
2
votes
1answer
813 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 ...
2
votes
1answer
548 views

Is this video 50p or 25p?

I have some footage shot with a Lumix DMC-FZ38 with the video format set to AVCHD and the SH (super high?) quality setting. The manual says: [AVCHD Lite] (With audio) When set to [SH]: ...