Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [framerate]

The tag has no usage guidance.

1
vote
1answer
20 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
vote
1answer
16 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 ...
1
vote
0answers
6 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
vote
1answer
17 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
votes
0answers
8 views

MOV to m4v: Messed up framenumbers

I tagged events in a m4v videofile, which I thought had a framerate of 120. However inspecting the metadata, it shows me a framerate of 40. But the video is played in slowmotion in vlc, which ...
0
votes
0answers
24 views

Handbrake changes framerate of video camera footage, when set to 'same as source'

I have a Sony HDR-CX240 video camera. After transferring a video file to my computer and trying to convert it to .mp4 using handbrake, the frame rate seems to change. Google Drive link to both videos....
0
votes
0answers
6 views

Generate CSV framerate table from variable FPS video?

I am sure ffmpeg's toolbox has something, but I have momentarily no time to dig into their manuals. I have video footage with variable frames per second. But I would like to have a CSV table for the ...
0
votes
0answers
11 views

_Trivially_ Convert high-frame-rate video to slow-motion

This answer explains how I can use ffmpeg to convert a high-frame-rate video clip so that it will display in slow-motion. The ffmpeg solution works for me, but I'm curious. It seems to decode and ...
0
votes
1answer
22 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?
0
votes
1answer
86 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 ...
0
votes
1answer
160 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
votes
1answer
227 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
votes
1answer
26 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
votes
1answer
80 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 ...
2
votes
1answer
125 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
votes
3answers
37 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 ...
0
votes
0answers
23 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
votes
1answer
510 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 ...
0
votes
1answer
367 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 ...
0
votes
0answers
56 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 ...
1
vote
1answer
47 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 ...
0
votes
0answers
23 views

Vegas - clip velocity not preserved when rendered

My Sony Vegas project consists of clips with several frame rates. Frame rate of the project is set to 59.940p (Double NTSC). I want one clip (60p) to have playback rate of 2. On this clip, the ...
1
vote
1answer
23 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
votes
0answers
161 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 ...
1
vote
1answer
32 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 ...
1
vote
0answers
167 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
votes
1answer
67 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
votes
1answer
55 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 ...
0
votes
0answers
264 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 ...
3
votes
2answers
33 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 ...
1
vote
1answer
65 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
vote
1answer
52 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
vote
3answers
1k 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
votes
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?
1
vote
1answer
38 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
vote
1answer
68 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
votes
1answer
442 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 ...
1
vote
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'...
1
vote
0answers
16 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 ...
0
votes
1answer
127 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 ...
0
votes
0answers
474 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
votes
1answer
147 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
vote
2answers
209 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 (...
1
vote
0answers
45 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 ...
0
votes
0answers
88 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
votes
0answers
120 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 ...
0
votes
1answer
3k views

Convert variable framerate ~60 FPS to constant 60 FPS losslessly

I have gameplay footage recorded with ShadowPlay (“GeForce Experience”) at 60 FPS, which as I understand results in variable frame rate, because the game drops frames sometimes. However, trying to use ...
6
votes
3answers
2k 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] ...
0
votes
1answer
269 views

Can duplicate frames from an h264 stream be dropped without encoding?

I have a file which from progressive 24fps was rendered into a h264 high profile 60fps file by mistake. This can be clearly seen advancing frame by frame because every other frame is duplicated except ...
0
votes
2answers
9k views

How to get smooth motion when changing clip speed?

Let's say I have a 30fps video created by a camera panning at a constant speed while filming some static scenery. If I watch the video, the motion in the video is perfectly smooth. If I double the ...