Questions tagged [frame]

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ffmpeg: how to remove start black part after trimming mkv

I am using the following command: ffmpeg -i input.mkv -ss 00:00:00 -t 00:11:27 -c:v copy -c:a copy output.mkv But it results in a mkv file with a starting black screen / frames but audio / sound ...
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-1 votes
0 answers
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Finding DNS servers in a frame

Can anybody help me finding the local DNS server and Root DNS server and TLD DNS server in this frame please? and their IP and mac addresses. Here's an image of Wireshark 0000 a8 66 7f 12 83 fd f4 cf ...
0 votes
1 answer
44 views

how to get the _really_ last frame of a video using ffmpeg

I tried: ffmpeg -sseof -X -i ergo.mp4 -vsync 0 -q:v 31 -update true -vframes 1 last.png to get the last frame and changed X from 1 to 3 to 5. And this gives different pictures depending on X. Can ...
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0 votes
0 answers
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Frame count mismatch after generating resized proxy file with movflags option

I am using FFMpeg to generate a down-sized proxy video for downstream processing. I am piping the video into FFMpeg as a stream and piping the resulting proxy video directly back to the calling ...
0 votes
1 answer
88 views

What's the difference between "real frame rate" and "frame rate" in MediaInfo?

What's the difference between "real frame rate" and "frame rate" in MediaInfo? The video was recorded with a Pixel 6 running Android 12 with the Google Camera app configured to ...
0 votes
0 answers
18 views

Equation screentips in microsoft word

I am using Microsoft Word 2016. I know that you can add ScreenTips to a word document using the method on this site: https://wordribbon.tips.net/T013183_Adding_a_ScreenTip.html But this doesn't allow ...
0 votes
0 answers
162 views

ffmpeg. Replace range of frames with black frames without re-encoding

Let's say I don't want to see titles/credits at the end of a movie but like the music. Is there a way to set a range like with -ss and -to, but instead of trimming it would replace frames with ...
1 vote
0 answers
17 views

Are link control, buffer credits and other fibre channel management messages affected by flow control?

Let's suppose there's a server connected to a fibre channel switch. They are happily exchanging frames of all kind, until the switch port buffer gets filled up. If I got correctly how flow control ...
0 votes
2 answers
29 views

Why is the trunk link tagged on the frames?

Doesn't every frame have a VLAN identifier? So why is it labeled on the trunk link to identify the VLAN? For example, in this image, computer A is in red VLAN and the switch detects this, so why re-...
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3 votes
0 answers
1k views

How to find dropped/duplicated frames in a video file?

I have some videos files where a few frames were missing. I can verify that by playing it in a video player and advance frame-by-frame, or by extracting all frames with ffpeg then check the output ...
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0 votes
1 answer
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Framerate dipping ~3 frames every ~1 second

Description of Problem: Frame drops ~3FPS every second, happens in any game, and sort of noticeable on the Windows desktop also when shaking the mouse around really fast. Causes noticeable stuttering, ...
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1 vote
1 answer
936 views

Missing Initial Key Frame Issue in VLC media player causes few second blank screen at the start of the video

I have videos which missing initial keyframe. Thus when I open the video file with VLC player, nothing happens on the screen until the first key frame. Example picture: https://i.stack.imgur.com/nBYrR....
0 votes
1 answer
509 views

FFmpeg - how apply filters to input frames

I need to convert thousands of bitmap frames (jpeg individual files) into a video, but I also need to adjust the contrast, gamma and brightness of input frames. Those frames have some quality, but the ...
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1 vote
0 answers
152 views

Emacs client - Keep frame until all buffers are closed

I'm using Emacs with the server in daemon mode. When I go to the buffers menu, I can see all the buffers that the server has open. Is there a way to keep the Emacs client frame open until all the ...
2 votes
1 answer
471 views

Insert a black frame between each frame and double the output FPS

So I am looking for a way to add a black frame in between each frame of a current video. What I am trying to do it add a blanking phase to a video to give it a film look. So the pipeline is a 59.94 ...
0 votes
2 answers
279 views

Is there a way to remove these thin line frame around IrfanView?

They're more noticeable when in maximize windows: .
3 votes
1 answer
717 views

Are 'peak frame rate' and 'variable frame rate' the same thing?

I can find the term 'peak frame rate' in some video editing software. Are 'peak frame rate' and 'variable frame rate' the same thing?
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0 votes
0 answers
933 views

How can I hide/remove/delete windows Caption Buttons like Close Button (X ) and minimize, maximize

I'm trying to get tired of hiding or removing the title bar and buttons for minimizer, maximize and close. I did a lot of research on the internet, but I was unable to find a solution. I can't find ...
3 votes
2 answers
4k views

Windows 10 windows/dialogs now have no frame at all

This question - Is it possible to turn visible the invisible window's borders of Windows 10? - does not appear to address the same issue. Things appear to have got (even) worse. I just underwent ...
0 votes
1 answer
459 views

Frameset won't print in Chrome since update

Anybody else having issues printing from sites with Framesets in Chrome since last week's update? e.g https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_frame_cols The print preview is blank (...
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21 votes
1 answer
14k views

FFmpeg : How to get last frame from a video

I have a video.mp4 file i want to get last frame from video/mp4 file and save as a image in local. If it is possible then please suggest me. Thanks.
0 votes
0 answers
738 views

"For security reasons, framing is not allowed; click OK to remove the frames": A feature, bug, or malware?

friends . . . I've been using Chrome for so long, and just recently receive a popup saying "For security reasons, framing is not allowed; click OK to remove the frames" on a number of sites; it shows ...
0 votes
2 answers
632 views

Ethernet frames larger than 64k

I have a several PCs in Gigabit Ethernet LAN, all are interconnected with single simple unmanaged L2 switch. No internet access. I want to build some realtime system, in which some PC should send a ~...
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7 votes
2 answers
12k views

How to add additional key frames to video using ffmpeg?

I want to add key frames on the base of a specific interval (20 frames) to my video. Therefore I used the following command in ffmpeg: ffmpeg -i <input> -vcodec libx264 -x264-params keyint=20:...
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2 votes
1 answer
2k views

Use ffmpeg for thumbnail selections

This is a follow-up question from HERE. I want to sample k frames out of the n number of frames in a given video using FFMpeg and its thumbnail filter. There is a post here providing some insights how ...
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6 votes
3 answers
5k views

ffmpeg extract pictures from several selected time points

I have a videofile and like to extract a single image from (about 1500) specific timepoints.(expl. -ss 00:50, ss 00:67, ss: 01:70 ...) Is there a way to do this? I tried out to use this command: ...
0 votes
1 answer
502 views

Low count of data frames in wifi monitor mode

I am using scapy to gather stats about wifi traffic for a given MAC. I log the date, type, subtype, and rssi of packets I capture in monitor mode with scapy. And I see a very low count of data frames ...
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0 votes
0 answers
306 views

When do exactly an Access Point (AP) sends a Beacon Frame?

I am trying the make a script in Python with scapy that captures the Packets around in the air. When i put the Wireless Card in Monitor Mode, it is supposed to capture Beacon Frames automatically but ...
0 votes
1 answer
388 views

How do I remove the original release date tag (TORY in ID3 v2.3) from a mp3 file using eyeD3 and Lubuntu?

How do I remove the original release date tag (TORY in ID3 v2.3) from a mp3 file using eyeD3 and Lubuntu? I have tried eyeD3 --remove-frame TORY file.mp3 without success. I've also tried --remove-...
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0 votes
1 answer
2k views

FFmpeg overlay image on video with fade-effect

Have few doubts wrt following ffmpeg command - ffmpeg -f concat -i input.txt -loop 1 -t 8 -i inputImg.jpg -filter_complex "[1]format=rgba,fade=alpha=1:st=0:d=8,setpts=PTS+10/TB[v1];[0][v1]overlay=x=70:...
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4 votes
4 answers
9k views

What happens to frame when it reaches a switch or router?

As I understand it, when one PC sends a frame to another PC through a switch, the frame remains unchanged. The switch receives it and sends the exact same frame. But what happens if we have two PCs ...
1 vote
1 answer
63 views

Is a video frame an independent image?

If a video file claims it has 30fps and 10 seconds, can it extract exactly 300 images? Does every type of video file consist collection of images?
1 vote
0 answers
150 views

Change last 3 frames to still images of 4th frame from end with ffmpeg

I'm trying to make a frame editor with ffmpeg with only one funcation. I want change last 3 frames of input video file to still images from 4th frame from end of file. Can I handle this with only ...
1 vote
0 answers
144 views

truncate last frame while converting single image + audio track to video in ffmpeg

thanks to the answers to this superuser question Combine one image + one audio file to make one video using FFmpeg i was able to create a video from a single image and an audio track. i used PJ ...
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2 votes
2 answers
3k views

What happens to the router's MAC address once the packet is forwarded into the Web?

What happens with link layer LAN Ethernet header data once the once the frame reaches the main home router and is forwarded to the first network core router? Routers are network layer devices and ...
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0 votes
1 answer
499 views

How to retain GIF frame order in Photoshop when creating an animated GIF?

So I have a GIF that has 70 frames on Photoshop. I put all that into a group (70 images) and it works fine when I press the play button. But when I try to duplicate this folder, the copy doesn't have ...
35 votes
2 answers
65k views

How to extract a frame out of a video using ffmpeg

I have a video and I want to extract 35-th frame out of this video. I want it to be a png image if possible. I know there are a lot of questions like this, but I could not find a solution that was ...
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3 votes
1 answer
6k 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 ...
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0 votes
1 answer
1k views

Scale video then apply image frame using ffmpeg

I have an image frame 1920x1080 and a video with the same resolution. I want to resize video by 80% of its resolution and center it, and then overlay it with image frame. So the final video result is ...
3 votes
1 answer
8k views

ffmpeg: How does ffmpeg decide which frames to pick when fps value is specified?

I am using ffmpeg to extract 3 frames per second using this command ffmpeg -i input.flv -f image2 -vf fps=fps=3 out%d.png I am wondering if I set the fps value, then how does ffmpeg select 3 frames ...
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1 vote
1 answer
37 views

what is the keys to minimise help frame of emacs

I have a small screen, I typed ? in ediff mode and the control frame enlarges to show me the keybinding. How do I minimise it to its original size after that? Thank you very much!
2 votes
1 answer
398 views

Make Emacs open with three frames by default for OCaml editing

I wish that if I open a .ml (OCaml file), or enter Tuareg mode (a mode for OCaml programming), then the frame should be split like shown in the picture. Left is the main. Top right is secondary. ...
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1 vote
0 answers
33 views

open office formulas grabbing space

On some occasions when an edit is made somewhere in the document that alters the pagination (such as new text that pushes everything down), the formulas will "grab" much, much more space than they ...
1 vote
1 answer
642 views

Why does packet data don't need trailer/footer while frame needs it?

Why does packet don't need trailer/footer while frame needs it? I am trying to understand networking concept regarding ISO & TCP/IP layering. I have googled a bit and it says that the footer in ...
5 votes
2 answers
7k views

Extract video frames display time and frame number

I would like to extract each frame and its display time. The purpose will be to later compare the output between two videos (reference/original video and the transmitted video) and see what frames are ...
0 votes
0 answers
566 views

Creating a movie from images using ffmpeg but getting only one frame

I read How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG (specifically the section "Compressed RGB, But Also Lossless") and used this command: ffmpeg -i *.png -...
16 votes
2 answers
952 views

How do I block my ISP from framing websites? [duplicate]

I've noticed recently, as of today, that all the websites I visit (except for a specific few sites such as Google) are all put into a frame. I'm not sure what the reason for this is, there are no ads ...
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0 votes
1 answer
936 views

Why doesn't Wireshark capture management frames in promiscuous mode?

I am working with Wireshark in promiscuous mode, which is normally used to allow Wireshark to capture all the frames in the connected network. The problem is that Wireshark in this mode doesn't ...
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1 vote
1 answer
1k views

Regarding Ethernet - Why is the InterFrame gap 96 bits long? [closed]

Can someone explain to me why the IFG is 96 bits long? whats the underlying reason for this ? I have given it a search but i couldnt find any good explanations for this. Thanks in advance
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0 votes
1 answer
3k views

Extracting jpeg images from mjpeg stream on terminal

I'm trying to extract jpeg images from an mjpeg stream. I've done a search and found a few sources, but those were extracting jpeg images from a mjpeg file, such as this one here. In my case, I don't ...
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