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Questions tagged [video]

Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.

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23 views

How do I fix my bash script to scale a video with ffmpeg? [duplicate]

I am trying to scale a video using a bash script using ffmpeg. I am looking in a directory and selecting a file that includes "1200" in the filename and scaling the file into a sub-directory named "...
2
votes
1answer
150 views

FFmpeg - split up mp4 with variable duration into two equal parts

I want to split up a video into 2 equal parts. The problem is that video could be any duration. E.g. 3 seconds, 3.5 seconds or more. I could only find a solution to split up a video if you know ...
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0answers
25 views

How to keep all video settings when using ffmpeg? [duplicate]

I want keep all the video settings when using ffmpeg. I use the command ffmpeg -t x -i test.mkv output.mkv # where x is the totaltime -7s to trimm the last 7 seconds of a video. Now after ...
0
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1answer
120 views

Copy multiple PGS subtitle tracks with FFmpeg

I'm using Debian 9. I have a file with several audio tracks and subtitles in PGS. I'd like to pass the video to h265 and keep all the audio tracks and subtitles as they are to an .mkv container, since ...
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0answers
23 views

Please help.Why does my Win 7 play videos with just layers of Blue, green and pink on it?

I use Pot player and I tried VLC but ended up having the same problem. Is it because of the C.R.T monitor? (The problem occurs only with the video rest of the appearance are normal) Image
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1answer
122 views

Why YouTube still uses H264 “Main” profile for 360p/480p videos?

YouTube uses a number of codecs such as H264, VP9, H263, VP8 etc. I am only looking at the most widely used H264 for now and I've seen across several videos that for 720p and above, YouTube uses 'H264 ...
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0answers
13 views

ffmpeg create mpeg from jpeg with “random” names [duplicate]

Using ffmpeg, I want to create a short mpg movie from about a handful of jpg files that have non-consecutive names, e.g.: 192.168.178.25_01_20190326082001_MOTDEC.jpg 192.168.178....
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1answer
35 views

Music video playing on laptop as input to microphone

I'm playing a video on my laptop which is running Windows 10. I want to broadcast that video's sounds to my microphone so that the person at the other end listening to my microphone listens to the ...
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1answer
86 views

Speed Up FFMpeg Still Image to Video, or other software?

I have a large 8k 360 degree image file that I recently rendered. For showcasing purposes, I want to convert this into a few minutes of video so people can view it in youtube's VR 360 viewer. However, ...
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0answers
38 views

Video got “pressed” after using -map in ffmpeg

Need some help in understanding this problem, and if there's any way to avoid it. I notice some videos got "pressed" after using ffmpeg, even using a simple -map command. The original video looks ...
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0answers
171 views

ffmpeg stuck when reads inputs from unix socket

I have a streaming system structure running on my iMac: MediaParser: A golang program that connects to TCP socket and find media frames. This socket does not contains encoded video, the connection is ...
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0answers
38 views

I can't play mp4 videos in Parole version 0.9.1 (codec missing), Xubuntu 16.04.6

I can't fix Parole media player to play mp4 videos! I search and research on internet but none of suggestions worked for me. I installed latest version via Ubuntu repositories but no avail to play ...
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0answers
77 views

ffmpeg mp3 to mp4 with still image of longer duration used used with acc

Hi i am trying to convert mp3 to mp4 with images below are two things tried. Size of mp3: 23 sec 1: Here size of video is same as mp3 but video sound does not works in iphone ffmpeg -loop 1 -i ...
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0answers
48 views

[ffmpeg]Input seeking seems result in incorrect duration of output file when seeking value is small with -codec copy

I was trying to remove a couple of seconds from the beginning of some mp4 files without re-encoding. At first, I used the output seeking, i.e. E:\>ffmpeg -i input.mp4 -ss 00:00:05 -t 00:01:00 -c ...
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0answers
16 views

Have a video collection on QNAP NAS and sometimes the files break.. Need advice

Hello Superuser community! I have a question which I hope will be quick to answer. I have a large video collection on a QNAP NAS and I find that sometimes the .mp4/.mkv video files will break and no ...
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0answers
9 views

Close captions (CC/aka subtitles) file to speech [closed]

Is there a tool which creates an audio file from written text (Is is NOT(!) about speech to text). There are many tools doing this, but I have not found one which is timestamp based. As I have ...
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0answers
99 views

FFMpeg Effect Zoom In and Zoom Out Video File

I need to implement the effect of zooming in and out for video. Two operations are needed. The first operation is to set the zoom to zero at the beginning of the clip, and by the end of the clip ...
0
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1answer
62 views

What's the best video format for concatenation

I have been struggling with .mp4's for about 2 days now, trying to concatenate a series of about 20 into 1 single file. Any differences between the files and it is a nightmare. Some files have ...
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0answers
608 views

Camera doesn't show video in Discord/Skype

My girlfriend's camera hasn't been working for a while. It worked fine before, but now it doesn't show the video anymore, at least in Skype/Discord. In the Camera app from Windows 10 it works ...
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0answers
26 views

How to push one video out as another comes in with FFMPEG?

I'm trying to achieve a sliding animation effect with ffmpeg where the current input is pushed out to the left, while the next input pulls into the screen from the right. So far, I have this command, ...
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0answers
113 views

Saving a copy of an incoming live video stream using ffmpeg?

So I have been successful in streaming a live video source (.mp4) in real time from host to client by using the rtp protocol of ffmpeg . At the client side though, I am currently using the ffplay tool ...
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0answers
61 views

Can a monitor with Thunderbolt 3 have video-in and power-out using the same cable?

We have purchased a Dell XPS 13 (NEW 2019) laptop, Samsung C34J79 and an Apple Thunderbolt 3 USB-C Cable. It is my understanding that the laptop can be charged using as little as 45W using USB-C or ...
1
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1answer
31 views

How come if I play a video when online on a website and then turn off the wifi, the video still plays for the part that loaded?

How come if I play a video when online on a website and then turn off the wifi, the video still plays for the part that loaded? Where does loaded part of the video get stored when offline?
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0answers
48 views

FFMPEG drawtext error for subtitles too many args in 'between(t'

I'm attempting to use drawtext to add multiple subtitle-like text onto a video.. It works when I have 1 or 2 drawtext arguments like this: WORKING: ffmpeg -i outa.mp4 -vf "[in]drawtext=fontfile=...
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1answer
78 views

Mediainfo: How to obtain color range information?

I'm using mediainfo to obtain several aspects of an input video such as resolution and framerate. I'm using the --inform option for that with values such as "Video;%FrameRate%" "Video;%Format/Info%...
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0answers
83 views

Cutting video using timecodes

I have 2 videos. One from cam1 and other from cam6. Below is the timecode information of the 2 videos: fprobe -v error -show_format -show_streams cam1.MP4 | grep 'TAG:timecode' Output->>>>TAG:...
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0answers
23 views

Cut a video using timecode inserted by an external device

I have 2 cameras and each of them is attached to their own external device which is inserting the timecode into the mp4 stream of the video. These devices are in sync when they insert the timecodes. ...
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0answers
25 views

Import MP4 media in camtasia studio

I'm editing my video and I wanted to add outro in my video at last. But the camtasia studio is showing error on importing MP4 format: Cannot load file 'filename.mp4'. It is either unsupported ...
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0answers
214 views

Using FFmpeg to convert video to image sequence- getting error “<file name.mov> no such file or directory”

I am trying to take a 10s .mov file and convert it to a series of multiple images for analysis using ffmpeg. I've tried fiddling around with the line: ffmpeg -i <file name.mov> -vf fps=1 out%d....
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1answer
110 views

FFMPEG: how to enable overlay filter until the end of the video? (not knowing duration)

I'd like some help for a project I'm working for using FFmpeg (not an expert in video editing at all!!). BASIC IDEA I have a lot of videos in a folder and I would like to compress them + to add a ...
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1answer
116 views

How to prevent VLC Media Player from auto-closing after video end

My VLC Media Player started to auto close after the end of a video. It never did that before and it seems that the setting has been set after the last update. I checked the settings but couldn't find ...
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0answers
26 views

Skype does not show video from my webcam

I have a webcam that works fine with other webcam software, like Yawcam or Webcamoid. Today I installed the latest version of Skype. When I open Settings --> Audio & Video, it shows that the ...
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0answers
10 views

ffmpeg Crossfade a second film onto the first [duplicate]

I am trying to fade in an mp4 onto the last 1/3 of a second of the first. what is the best way (1 liner) of doing it? for example: 1.first video is 10 seconds long 2. second is 5 seconds long the ...
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0answers
74 views

Changing input on the fly

I want to ask about changing input on the fly in ffmpeg cli. I have a few inputs like: png files two RTSP streams and I want to change between those RTSP streams in fly because I'm streaming from ...
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0answers
263 views

Difference between MPEG-TS and RTP for .mp4 video streaming?

So I am trying to stream a .mp4 video over ETHERNET using the ffmpeg tool. I have read a little about transport of .mp4 video and have learnt that there are two methods; mpeg-ts and RTP (both over UDP)...
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1answer
33 views

How to preserve date when transferring videos from iPhone to Windows?

I experience the problem that when transferring videos from my iPhone to my Windows PC, that the videos are saved with the date of the transfer and not the date when the videos were taken. This leads ...
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1answer
328 views

FFmpeg - How to zoom in a video

I want to zoom a video into its center using ffmpeg (command line). I tried by using the zoompan filter, but it's using the first frame of the video only. I want the video to be played while zooming ...
3
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0answers
196 views

Strip x264 copyright information during ffmpeg copy

I am trying to remove the copyright string from the generated mp4 file using ffmpeg (copyright string is already present in avi file). I have an input avi which I'd like to make 'streamable' and ...
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0answers
59 views

FFmpeg with Block Motion Compensation Only

Is there a way to just perform block motion compensation using ffmpeg command line (i.e. no addition of residual encodings)? I want to compare the quality of the video frames produced using various ...
1
vote
1answer
39 views

What driver does Linux use for generic UEFI video

Let's say I don't have the vendor specific GPU driver on the Linux distro. What is the generic driver that's used when booted in UEFI mode? I know it's not VESA. I checked the DRM github page and can'...
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0answers
14 views

4k 60fps video lags on win 8.1, Core i5-7600k, GeForce 1050Ti

4k 60fps video lags on the pretty powerful PC. All 4 cores are loaded by 100%, GPU loading is between 4 and 12% depending on renderers selected Media Player Classic other players also lags with the ...
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0answers
54 views

Controlling FFMPEG Input

I am trying to find a good way of controlling video that I can pipe into FFMPEG. My first idea is to use VLC and pipe the ouput into FFMPEG, that way I can control VLC using it's API and I can still ...
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0answers
12 views

How to convert video to higher FPS by speeding it up? [duplicate]

For example, let's say I have a 30 second long video clip, recorded at 30 fps. How can I convert that clip to a new clip that is 15 seconds long and has a framerate of 60 fps? Or 10 seconds and 90 fps?...
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0answers
31 views

Show a progress bar in VLC at a framebuffer (fbdev), without window manager

I have a VLC player running directly from console. I am using VLC-NOX package from Debian strech. Does anyone have a clue which command line options it needs to show a progress bar of the video in ...
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1answer
629 views

ffmpeg “Invalid length 0x59f0 > 0x8bd7fe90 in parent” when trying to do anything with mkv files

I don't think I've ever had this problem prior to one or two months ago. At first I thought I was entering the wrong commands or feeding it corrupted files, but this happens with every single mkv file ...
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0answers
80 views

Get video links through chrome network tab and feed them to IDM to download videos

I want to download all the Naruto Shippuden episodes from the website https://ww2.naruspot.tv. Thing is, they do a really good job of hiding their video links. I am not able to get the video link by ...
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1answer
22 views

Malicious content through URL downloaders? [closed]

Is there a way to receive malicious content of any kind through URL downloaders?
1
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1answer
189 views

How can I improve my FFmpeg command to get a true frame-to-frame copy while scaling from the original file?

I am trying to copy from an original file without re-encoding, change the size while maintaining a 1 to 1 copy of the original. The original file is 00:22:00 and the difference is approximately 1 ...
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0answers
19 views

Can't see video preview after Inserting YouTube URL into OneNote Page by IFTTT

I use IFTTT to insert liked videos on YouTube to a new OneNote page. Usually when you paste a YouTube URL into OneNote, it generates a video thumbnail. However it's not generated when inserted via ...
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1answer
67 views

Piping mp4 video file to v4l2 devices lowers the frame rate in ffmpeg

I'm trying to play a 10fps video file on multiple v4l2 loopback devices. Although the following command outputs the video on the video devices, it does not maintain the framerate. The framerate (and ...