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Questions tagged [framerate]

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6 views

premiere cs6 all clips play at same fps regardless of source fps

I have set up a project in Adobe Premiere Pro CS6. I have various source clips at two different frame rates, 29.97 and 59.94. Using various methods (i.e. "new sequence from clip", new sequence and ...
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1answer
18 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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1answer
38 views

Problem setting different framerates with ffmpeg map option

I am facing a problem to set video streams framerates with FFmpeg when using the map option. Here is what I want to do: Given an input video file of 60fps, I want to generate an output file ...
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0answers
4 views

Audio subtly out of sync with video - how to fix?

I have an MKV file that has an issue with the audio - it subtly lags behind the video. They start in sync, and then over the course of the whole clip they drift out of sync. My first idea was that ...
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4answers
5k 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 ...
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1answer
104 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 ...
2
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1answer
579 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 -...
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0answers
34 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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3answers
5k 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 ...
3
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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 (...
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2answers
32 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 ...
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2answers
28 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?
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0answers
13 views

Do digital cinema projectors follow the same “dark-bright” pattern as traditional projectors?

Not sure if this is the right Stack Exchange for this question, but please point me toward a better site if it exists. In Daniel Dennett's book, "Consciousness Explained," he writes: Standard ...
3
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2answers
3k 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 ...
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3answers
80 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 ...
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1answer
149 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
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2answers
29 views

Flickering when doubling shutter speed

I have a Nikon D750 and cannot figure out the logic behind video (or still photos in live view) and flickering. I live in Norway, so the electricity is 50 Hz. If I shoot video at 1/50 or 1/100 second ...
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1answer
38 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 ...
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1answer
27 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: ...
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2answers
26 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
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1answer
256 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
25 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
16 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
29 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, ...
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1answer
120 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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1answer
111 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 ...
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2answers
311 views

What is Frame Doubling in Action Cameras?

Many action cameras claim to record 4K UHD but only meet the spatial characteristics, i.e., 3840 x 2160, but not the temporal characteristics, i.e., minimum 23.976fps. Instead they record at 12fps (...
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2answers
41 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 ...
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1answer
25 views

Why do high FPS videos look less blurry than real life?

Quickly wave your hand in front of your face right now. Looks really blurry right? Now watch a 60 fps video. How come it looks so smooth? To me 60 FPS videos look even smoother than real life. Why?
2
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1answer
967 views

How to use ffmpeg to fade in/out a veriable frame rate video clip with unknown duration

I have been looking for a way to use ffmpeg to downscale some MPEG-4 (Base Media / Version 2) video files recorded with a variable frame rate, adding fade in/out effects at the head and tail of each ...
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1answer
245 views

Frame rate mismatch when converting to raw video

I am trying to convert a H.264 video to rawvideo using the following command: ffmpeg -r 50 -i test.ts -c:v rawvideo -r 50 -pix_fmt yuv420p -filter_complex "[0:v] setpts=PTS-STARTPTS" -y test.yuv ...
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1answer
744 views

ffmpeg timecode and -r

Following up on this question: ffmpeg drawtext timecode source framerate I want to change the frame rate of a file, scale it down and burn the timecode in one operation. ffmpeg -i in.mpg -r 24 -vf "...
2
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1answer
223 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]: ...
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6answers
9k 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, ...
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2answers
97 views

Does 60 fps make sense for YouTube?

YouTube says one should upload videos in the frame rate in which the video has been recorded. But if I have yet to record, what frame rate should I choose? I noted that videos downloaded from YouTube ...
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2answers
427 views

Fast pans and motion seem to strobe or stutter, why?

I have some high frame rate video from a video camera. It is shot at 50 frames per second. But my editing project is set at 25 frames per second. When I render the timeline out every movement seems to ...
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2answers
842 views

60fps and 30fps clips exported into one file?

I have two cameras: one films in 30fps and the other in 60fps. These settings cannot be changed (why the manufacturer did that I don't know). When I export the finished product, which is the better ...
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1answer
91 views

Metadata says the video is 25i, but MPC plays it as 50i

I have a DVD with footage which I want to convert to h264/h265. Mediainfo says that the video is 720x576, MPEG-2 encoded, PAL 25 fps and interlaced which is the first time I've seen that, usually 25 ...
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1answer
926 views

Why setting -r 30 still gives fps=15 in ffmpeg?

Why setting -r 30 still gives fps=15 in ffmpeg? command: fmpeg -loglevel verbose -pixel_format mjpeg -s hd720 -r 30 -i /dev/video1 -f libx264 -preset ultrafast -tune zerolatency -crf 23 -f matroska ...
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1answer
27 views

Why sometimes I can set framerate sometimes I can't?

Why I get the following when I try to get camera feed from Logitech webcam? The driver changed the time per frame from X to Y Sometimes it happens sometimes it doesn't. How should I resolve this ...
0
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1answer
228 views

Should I rather be shooting 1080/50i or 720/50p for 25fps web use?

The camera here is a Samsung HMX-Q10P (P likely stands for PAL: the N model would have 60fps instead). The videos I upload usually are 25fps either way, but strictly speaking 1080/50i will never give ...
0
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3answers
49 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 ...
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1answer
758 views

Wrong frame-rate, corrupted playback of isom/mp4 files remuxed from H.264/AC3 MPEG-TS

NOTE: This question is superceded by this new one, please do not answer below this post. What happened? [Edit] DVB file ('file1') in TS format of H.264/AC3@50i cannot be properly remuxed into any ...
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1answer
26 views

Is it possible to get a better quality by increase the frame rate, even if I don't have the raw footage?

Is it possible to improve the quality of a movie just be rediting the finished product to have more fps? Or do you still need the original raw footage to actually increase the quality?
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0answers
397 views

How should I use Audition to convert audio for retimed 24fps to 25fps for broadcast?

I have to convert the audio tracks of my 24 fps movie to match up with retimed 25fps so that it can be exported alongside the 25fps video (just playback speed change) for broadcast transmission. I ...
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1answer
306 views

Photoshop animation dropping frames at 12fps or as image sequence

I have been kind of tearing my hair out trying to figure this out. I have a frame animation with 30 frames. I tried exporting it as a video set to 12fps. For some reason, what should be 2.5 seconds (...
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1answer
79 views

FCP retime timelapse image gets blurry

If i retime (speed up) my 4k footage, the image gets blurry. If i stop the movie, i see a crispy still image! Why? I already tried to slow time the footage but it doesn't work Thanks
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1answer
47 views

Does increasing the framerate while not changing the content affects compression quality?

This question has no practical importance for a regular video production pipeline, but nonetheless it's something I find fascinating because it would imply video codecs use temporal sub-sampling ...
4
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1answer
294 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 ...
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0answers
216 views

Trying to understand the delay converting a sequence of images to video

I am using java to create image files that I am converting to video using FFMPEG. I am creating the midi and audio simultaneously on reaper then using the duration of the notes on the midi file to ...