Questions tagged [framerate]

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Force ffmpeg to produce constant frame rate

Why does ffmpeg produce variable frame rate output? I have an input file, that when I run it through MediaInfo it tells me it's a constant frame rate video: Video ID ...
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FFMpeg: Buffer overflow while Slideshow => Variable FPS => Constant FPS

I have a ~1h slideshow in the concat demuxer format (-f concat -i input.txt). There are at most 20 slides. I'd like to produce a constant-framerate H264 MP4. I do: ffmpeg -f concat -i vcd.txt -preset ...
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VLC Time v3.2 How can I display Frames instead of ms?

I took a look at Time v3.2 and it is really nice. What I would like to have is a different output of the "Timecode". It should be hh:mm:ss:ff as in the EBU Timecodeformat How can I change ...
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1 vote
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66 views

Ffmpeg - Changing frame rate without re-encoding (again)

I'm trying to change the frame rate of a MP4 file so it runs at the correct speed. I asked how to do this with FFmpeg without re-encoding here and the answer tgies gave worked. This was on a 25fps ...
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189 views

FFMpeg is changing from CFR to VFR on a simple rewrap

I'm exporting an x264 MP4 file from Premiere Pro (using Voukoder), then adding subtitles and converting to MKV. The mp4 output file from Premiere is reported as CFR (by MediaInfo), but after ...
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26 views

How does a GPU render frames in different throttling/capping circumstances?

I'm interested in "which" frames the GPU renders when frame rates don't match up. Scenarios GPU can output frames faster than your monitor can display them GPU is capped at a frame rate ...
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28 views

Can we add background music and different framerate on existing video using FFMPEG tool in .Net core?

I have 10 images with 10 audio along with background sound and different framerate. And I have to generate a video using those files. I am using currently FFMPEG tool for that Example : 1 image + 1 ...
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1 answer
401 views

Reduce video frame rate from 60 to 30 fps without re-encoding and keeping original duration

I have a video with these specifications: 4320x2160p 60 fps 20.0 Mb/s bitrate AVC format (x264) Since my smartphone can play videos up to 30 fps at that resolution, I need a fast way to reduce the ...
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0 votes
1 answer
685 views

Does PNG/APNG support 60 FPS animations, or are they limited like GIFs? [closed]

A similar question like Do 60 FPS GIF's actually exist? Or is the maximum 50 FPS? but this time for PNG or APNG or any other thing, like WebP. Is it possible to achieve 60 FPS animations with PNG? ...
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1 vote
0 answers
322 views

Extract frames from a video results in abnormaly more frames for each fps by using ffmpeg

I have a job of using ffmpeg to extract the frames averagely from a video, with different fps. I use this command for it. ffmpeg -i input.mp4 -r specified_fps -q:v 2 image %4d.png And I have 3 ...
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1 answer
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Change frame rate of png encoded video without changing number of frames?

I have the following video Input #0, avi, from 'input.avi': Duration: 00:00:12.50, start: 0.000000, bitrate: 335548 kb/s Stream #0:0: Video: rawvideo, pal8, 2048x2048, 338250 kb/s, 10 fps, 10 tbr, ...
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1 vote
0 answers
157 views

How to deduce and overlay variable framerate of video with duplicate frames using ffmpeg?

I have a lossless video recording of a game without screen tearing. The video itself is at a constant 60fps, but the game framerate varies between 20-30 fps due to performance issues we are debugging. ...
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  • 173
-1 votes
1 answer
64 views

When transcoding DVD contents, should I keep the 29.97 framerate?

I'm using handbrake to transcode (the main stream of) a DVD into a x265+AAC file, using the handbrake application. The source material has a frame rate of 29.97 fps. My question: When transcoding, ...
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1 vote
0 answers
240 views

Using ffmpeg to apply mpdecimate and recreating the folder structure with fixed files to another partition

I have 4.390 video files across 638 folders/subfolders. These files have problems with the framerate and I was able to fix using the command ffmpeg -i in.mkv -vf mpdecimate out.mkv How can I use a ...
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2 votes
1 answer
726 views

Windows stuttering/lagging when dragging, scolling etc

Windows on my laptop lags a lot. The framerate is feels like 3-4 fps. The computer is a Lenovo P1 running latest Windows 10 May 2020 (2004)-version. All drivers are updated. I am using a docking ...
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1 answer
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frame rate and refresh rate while playing a video

As simply I understand it, frame rate is the number of still images that can be displayed on the screen and refresh rate is the number of times the monitor can draw image on the screen. So, ...
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7 votes
2 answers
2k views

How can I see Explorer.exe's frames per second?

I want to see how many FPS I'm getting on my desktop. As I understand it, in Windows it's just a program called Explorer.exe. How can I see how many frames per second it is displaying?
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1 vote
1 answer
617 views

Convert PNG frames to video with missing frames

I have a camera that records at 30 FPS. I have found that the camera drops frames sometimes. What I have are PNG files named _Color_<some_number>.png. For example, _Color_1.png to _Color_10000....
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1 answer
184 views

How can I record the framerate within a program over time?

I need to measure the framerate of a program over time to see how the computer's hardware affects the program's performance. I know that common screen recording software display the framerate, but I ...
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1 answer
511 views

Ubuntu 18.04, gdm3, X11 an fixed frame rate

I'm using ubuntu 18.04.02 with 2 displays. The Graphic adapter is connected using DP to an KVM switch, which is connected to an 4K display (called Display 1), which supports only 30hz frame rate. ...
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17 votes
2 answers
15k views

Do 60 FPS GIF's actually exist? Or is the maximum 50 FPS?

I've been recently playing around with FFmpeg and I was trying to convert .avi to .gif since other methods I've tried to so far didn't work so well. What I noticed is that, when I use this command: ...
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0 votes
0 answers
127 views

How do I output a video that is over 600 fps on FFmpeg?

I have two videos that I want to concatenate, one is 29.97 fps and the other is 30.41 fps. I'm trying to make it look perfect by making the frame rate 91138.77 fps, but it can only go up to 600 fps. ...
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1 vote
0 answers
1k views

How to set a specific refresh rate for a specific application?

I have a game that is locked to 30 fps. I added a mod that unlocks it to the monitor refresh rate and decreases the game speed (which is locked to the refresh rate) by 50%. This way, if my desktop is ...
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0 answers
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Why does DOSBox run at a slower speed when using my speakers instead of my headphones?

I noticed that whenever I play a game in DOSBox, the game runs very choppy with many dropped frames when I have no audio device plugged in to my laptop's headphone jack. However, when I plug in ...
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Performance issues after installing an SSD

I have a laptop ASUS N550JK with the following specs: Intel core i7-4710HQ @ 2.50 GHz, 8 GB of RAM, NVidia GeForce GTX 850M, HDD storage of 677 GB (strange number, I know). Until last week I was ...
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0 votes
1 answer
319 views

Variable framerate lossless video from yuv422 images

I've been pulling my hair lately with FFmpeg commandline. Be aware that I am not an FFmpeg expert. Here is my problem: I have a bunch of YUV422 images as such: image0.yuv image1.yuv .. image450.yuv ...
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5 votes
5 answers
3k views

How to obviously see every frame per second to check if the monitor is actually updating at expected framerate?

I've been reading up about higher framerate monitors and I've found that a lot of the 60Hz monitors can be slightly overclocked to show 65, 67, 70 or sometimes even 75 frames per second if you play ...
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0 votes
1 answer
760 views

ffmpeg becomes super slow when using duration instead of -r

What I'm doing: I'm still working on my slideshow script. Meaning, I use ffmpeg's concat demuxer (files.txt) to provide ffmpeg with a bunch of .jpg files for a slideshow. In the past I wanted all ...
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1 vote
0 answers
1k views

Syncing two videos with different framerates using FFmpeg

It should be easy. Actually, it probably is easy. I'm probably just dumb. I have two videos, shot at the same time but with two different cameras. One video is 1920x1080@60, the other is 640x480@29.85....
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2 votes
0 answers
226 views

I received a large .asf surveillance video file and it's jumpy, as though it's regularly missing a frame. Any hope for salvaging it?

The problem exists when I try to play the original 3.5 gigabyte asf file, and I have converted it to mp4 at least a dozen times, experimenting with various Handbrake settings relating to frame rate (...
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0 votes
1 answer
405 views

(Windows 10) Recently PC running all tasks slowly and having bad performance

Heyy forum! So I have this pretty high-end PC I've had since 2015 and only recently it seems to be giving up. Whenever I try to do any tasks that requires some more power, my PC seems to struggle and ...
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1 vote
1 answer
1k views

How to cut video frame specific with ffmpeg and convert framerate?

since a couple of days i encounter a problem with ffmpeg which is actually driving me mad... I try to use FFMPEG's filter_complex in order to extract certain short segments of a videofile (shot at ...
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1 vote
1 answer
7k views

ffmpeg Duplicating Frames

A very annoying situation... I have an MPG2 video that is at the framerate of 29.97, yet when converting to MP4 frames are duplicated. That command (straight conversion, no options): ffmpeg -i ~/...
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1 vote
0 answers
697 views

Setting frame rate of segmented webm in ffmpeg

I'm using ffmpeg to segment files for use in MSE. I've tried dozens of combinations of flags. No matter what I always get a frame rate that can't possibly be right, specifically 1k frames per second. ...
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0 votes
1 answer
742 views

How do I use ffmpeg to increase the framerate of a video without affecting audio quality?

I have a ~30k frame video at 25 fps that I'd like to make 50 fps and keep the same running time. This would probably involve duplicating every frame. However, I'd like the audio track to be unchanged. ...
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0 votes
1 answer
1k views

Tearing with G-Sync on and V-Sync off in The Witcher 3

My setup has an NVIDIA GTX 1080 (Asus Strix ROG) video card with an Acer XB271HK monitor connected via DP, G-Sync turned on in NVIDIA Control Panel and V-Sync turned off in The Witcher 3 video ...
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3 votes
0 answers
191 views

VLC Wait for Frame

I have a HD video that I would like to play without it being choppy with a grey frame (eg. when it is not being decoded fast enough) I could manually turn the playback speed down until it works, but ...
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-1 votes
1 answer
3k views

Does Windows 7 Windows Media Player support H.264 mp4 files with variable frame rate?

I think the title says it all. I have a .flv file I am transcoding to h.264 mp4 file. The source uses a variable framerate. Transcoding the file to an .mp4 file with constant framerate generates a ...
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-1 votes
1 answer
96 views

Terrible Frame Rate In Games [closed]

I recently acquired a new graphics card (NIVIDIA GeForce GTX745 4GB) a upgrade from my last (ZOCTAC GTX 950 2GB). I was quite content when i fit it and every thing was working. So i loaded up my game ...
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1 vote
1 answer
995 views

144hz monitor only displaying 60hz?

So I have an AOC G2460 144hz monitor. I have an Accell DisplayPort cable going from my GPU to the monitor. My settings in the monitor itself, Windows, the NVidia control panel, and the game I'm ...
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0 answers
223 views

Smooth playback of .mkv files incorrectly rated at 29fps

I noticed for some mkv files, the frame reported in Explorer and VLC is 29, but this is incorrect as it's actually a 24fps source (i.e. Blu-Ray movie), and the file plays with judder in MPC-HC and VLC....
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1 answer
1k views

ffmpeg, making gif or video, how to make the "PLAY" faster, fps=1 dont work

i have this problem, i download a gif, i extract all the jpgs from it, i modified the jpg, then i was trying to recreate the gif using the new jpgs, but i found that whatever i try, no matter if is a ...
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0 votes
1 answer
400 views

Is Firefox using frame interpolation now?

Until recently I have only seen motion interpolation in Chrome. However, since 50.1 it seems some YouTube videos are frame interpolated. Is this a Firefox feature, or is Flash/YouTube doing frame ...
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1 vote
1 answer
3k views

FFmpeg constant framerate to variable

When recording gameplay with constant 60fps, it records at 60 fps even if the gameplay is ~30 fps or lower. Is there any way to transcode the 60fps video from constant to variable FPS, so it uses ...
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0 votes
1 answer
32 views

Why in converted video the voice and video frame doesn't get synchronous even using "source frame rate"?

I want to convert a movie which i captured from satellite with .ts format to .AVI so that i could open it using windows media player easier _with lower CPU usage than using codecs. I use Jetaudio ...
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  • 107
8 votes
2 answers
12k views

How to increase video speed and frame rate without duplicating frames

I have a long video with a frame rate of 30 FPS that I want to convert into a 200x time-lapse with a frame rate of 60 FPS. My only problem is that avconv is unnecessarily duplicating every other frame ...
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  • 251
3 votes
1 answer
824 views

My video card is rendering 60fps, why does my monitor show less?

My Dell LCD e197fpf 19" 75Hz monitor is not outputting the full framerate it is capable of when put at resolutions above 1024x768. I expect my monitor to output the framerate given by the GPU up to ...
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2 votes
2 answers
2k views

Variable framerate with FFmpeg

Let's suppose that I have 5 images with the respective delays between each image: 60ms; 54ms; 70ms; 23ms; 40ms; How can I tell FFmpeg that information?
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23 votes
4 answers
38k views

Change framerate in ffmpeg without reencoding

I have a mkv (h264) video that is 23.976 fps (24000/1001) but I want to convert it to 25fps without reencoding and loosing quality. I know mkvmerge can do it ( with option --default-duration '0:25fps')...
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  • 345
0 votes
1 answer
955 views

Frame rate during screen-casting

I am trying to record screen using ffmpeg with the following command: ffmpeg -f x11grab -s 1366x768 -framerate 30 -i :0.0 -c:v libx264 -b:v 1000k out.mp4 which I learned from here. But I am not ...
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