Questions tagged [framerate]
The framerate tag has no usage guidance.
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2answers
18 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 ...
1
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1answer
17 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
22 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
24 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
35 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
votes
1answer
106 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 ...
0
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1answer
21 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
15 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
20 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
43 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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1answer
53 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 ...
2
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2answers
23 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 ...
1
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1answer
33 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 ...
0
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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?
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1answer
197 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
489 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 "...
0
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1answer
624 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 ...
0
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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
143 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 ...
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1answer
196 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]: ...
0
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3answers
43 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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0answers
27 views
Hardware or software frame rate conversion
Wondering if anyone has any experience with hardware vs software frame rate conversion? We're needing to go from 29.97 to 59.94 and getting differing results using AE and a couple of plugins regarding ...
2
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1answer
778 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 ...
1
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1answer
613 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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0answers
86 views
Why this youtube videos repeat a frame every 5 or 6 frames?
While trying to study closely juggling videos (the juggling is irrelevant), by using the "," and "." keys, that allow one to move frame by frame on any youtube video, I noticed that this video, (I'm ...
2
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1answer
77 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 ...
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1answer
25 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?
0
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0answers
287 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
40 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 ...
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0answers
201 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 ...
0
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1answer
79 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 ...
2
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1answer
64 views
Preserving Frame Rate
I'm a physicist with no experience in video production.
I work with satellite imagery and I have created timelapses where one frame corresponds to one minute. It matters I preserve the time/frame ...
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0answers
332 views
How to overlay raw video with variable (0-60) framerate on normal video with ffmpeg?
I generate video frame-by-frame and send it to ffmpeg on pipe:0 (std in) real-time. The frames are generated not constantly but when there is change to the image, so there can be no frames (0 fps) for ...
4
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2answers
39 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
90 views
Recording Hi8 SD NTSC home movies ideal quality with ffmpeg?
I have a Dazzle DVC 100 that I'm using to connect an old 8mm camcorder up to in an attempt to digitize all our home movies.
The videos are all NTSC SD I believe and I've had the best success at ...
1
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1answer
62 views
Shadowplay Footage Import to iMovie Introduces Audio Artifacts
I've been playing around with this to vary degrees of success and I'm getting slightly confused by what I'm seeing (or rather hearing in this case). Just playing the clips in a player like QT or VLC ...
1
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3answers
2k 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:
...
0
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0answers
18 views
What if I change the frame rate from ntsc to 29.97? [duplicate]
I have a video which has 30000/1001 ntsc frame rate.
If I encode it with frame rate 29.97:
ffmpeg -r 29.97 -i input.avi output.mp4
Is there any serious problem with the output file?
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1answer
43 views
A Sony Pro camera's spec shows it shots in 29.97fps, does it really mean it?
According to this ffmpeg documentation, it seems one of the 'native' frame rate for ffmpeg is
'ntsc': 30000/1001
while 30000/1001=29.9700... does not equal to 29.97, I wonder if a Sony Pro ...
1
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1answer
122 views
Is it still meaningful to have 29.97fps under ATSC standard?
According to this video, we use 29.97fps under NTSC standard.
But now we have ATSC standard, do we still need 29.97fps in order to broadcast under ATSC?
Is it still meaningful to have a newly ...
0
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1answer
616 views
Lower framerate without re-encode
I'm looking for a way to lower the framerate of an H264 mp4 video without re-encoding the video.
Example: I have a 30 FPS input file and I need it to be 5 FPS. I want to avoid re-encoding because of ...
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2answers
2k views
How do I find out about the shutter speed of frames in a video?
I shot a video at 24FPS, and I want to find out what the shutter speed of each frame was. Quicktime Player and VLC's Info panels don't give me this information.
Neither does exiftool. Here's exiftool'...
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0answers
24 views
Frame rate in Premiere Pro CS5.5 problem
This is a unique situation. I started a new job and they have me using an old version of Premiere I'm not familiar with (5.5).
I have an mp4 that is 48.93 fps. It plays back fine in video players on ...
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1answer
182 views
Premiere: None of the sequence presets match my clip settings. What to do?
I'm a beginner with Premiere CC and following a tutorial that strongly recommends creating sequence settings to match one's clip settings. This seems reasonable enough, but I can't find any suitable ...
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0answers
594 views
ffmpeg won't sync audio after specifying rate
There are a thousand threads on audio sync problems but none of them had the solution for my case. I am recording videos on frame arrival as opposed to specifying a fixed rate. As a result I may get ...
2
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1answer
174 views
Can I reduce the delay between video frames?
I have a variable frame rate video file. There is a delay of over 30 seconds between some frames. Can I transcode the video and reduce all delays between frames over a certain value, say 1 second, to ...
1
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2answers
283 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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0answers
49 views
GoPro 240 fps has duplicate frames
Is it a normal thing for there to be duplicate frames when looking at video footage? I am looking at video frame-by-frame from a GoPro Hero 4 Black and sometimes there appears two frames in a row ...
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0answers
147 views
Inaccurate framerate when converting from .h264 to .mp4
I'm recording a video using my Raspberry Pi's Pi NoIR module, using the following command:
raspivid -w 1280 -h 720 -o /mnt/video/tmp/${date}.h264 -t 895000 -fps 40
This records an .h264 video at a ...
0
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0answers
146 views
VLC: transcoding via command line
I want to transcode a file produced by a screen capture app, with variable frame rate, a produce a h.264 encoded, fixed frame rate version that I can edit in Adobe Premiere Pro.
I see that there is ...
