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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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It is possible to analyze the video that is divided in many videoclips and find the name of these videos from YouTube?

I’m asking this because, I have trouble with analyzing a video from YouTube that is divided in many video clips that are taken from different videos from You tube. I wonder, it is even possible to ...
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1answer
35 views

HP Omen desktop PC displays odd pattern on screen, then crashes

I have an HP Omen which I bought in January. It’s an HP Omen 870 with an Intel® Core™ i5-7600K processor, NVIDIA® GeForce® GTX 1060 graphics card 8 GB DDR4-2133 SDRAM, and a 1 TB 7200 RPM SATA hard ...
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1answer
21 views

Save both audio and video to one file using GStreamer from camera and microphone

I need a way to record video from my camera and audio from my mic simultaneously, such that they are saved in one file. Currently, I now how to record video... gst-launch-1.0 -e autovideosrc ! ...
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0answers
37 views

How to run a ffmpeg code on a GPU?

we have written a short code in C code to read a video file, using common libraries as libavcodec, libavformat etc.. The code is running smoothly but only using the CPU resources. We'd need to run the ...
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0answers
14 views

Screen recording has audio “stripped” when compressed or shared

Short question : I have taken a video screen recording on my iPhone and imported it to my computer, when i try to compress or share the file it keeps stripping the audio from the video and im just ...
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0answers
9 views

How to install mencode with libmp3lame support on a mac?

On a mac (OS 10.13.6) I like to convert a video file with mencoder as follows: mencoder input.mkv -sub subtitle.srt -o output.avi -oac mp3lame -ovc x264 However, I get the error message: MEncoder 1....
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86 views

Download from camtube [on hold]

im having the problem when i try to download a video from camtube.co, using this method: -right click to inspect -network tab -play video -download the video <------ -change the extension -->here ...
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0answers
19 views

Create thumbnail images at some interval from a video without reading whole video [FFMPEG]

Short Problem: I want to take some screenshots image from a video url at some specific times but I don't want to read the whole video. Let's say I have a video stored in some url (like https://www....
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0answers
18 views

How can i measure data transfer of video file in server? [closed]

I host my website on linux server, and host video file on my server and I using video file in other server. Is it possible to measure data transfer or bandwidth of my video file? or are there any ...
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0answers
12 views

Several problems with ffmpeg streaming Ubuntu

I'm running multiple instances of ffmpeg on my Ubuntu server, since the VPS is on shared hosting I can't have a stable connection, sometimes one of the streams stals, ffmpeg running with video input ...
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1answer
37 views

FFMPEG scale video according to image height when overlaying video on image

I am trying to overlay a video over an image in FFMPEG. For this I am using the below command. -i C:\Users\Vivek\Desktop\SAM\Effects\bubbles.mp4 -i C:\Users\Vivek\Desktop\selfie.jpg -filter_complex "[...
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0answers
16 views

ffmpeg produced file which youtube won't process - audio longer than video

We have produced a series of exercise videos with voiced instructions. Audio (separately recorded) and video have been put together using ffmpeg. In some cases, the voiceover is longer than the ...
0
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1answer
32 views

Media Player Classic doesn't play videos with over long names when using “drag and drop” method

When I double click on an over long name file it played as expected but when I drag and drop the same file onto a MPC window it didn't play and it shows "File not found". Is there a solution for this ...
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1answer
23 views

How to add audio input to video FFMPEG

please note that I'm really really new to these things, I'm streaming a blank black video with text as you can see here: ffmpeg -re -f lavfi -i color=c=black:s=360x360 -vf drawtext="fontfile='/usr/...
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1answer
22 views

NVENC HVEC in FFMPEG unsharp on fast movement

I use FFMPEG with NVENC HVEC and tried several options the last days but finally i was not able to reach the same quality as CPU Encoding. The main issue here is that fast scenes are getting unsharp. ...
2
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1answer
79 views

Overlay a video over an image using ffmpeg

I am trying to overlay a video on an image using the below command. -y -loop 1 -i snowflake.png -i crack.mp4 -filter_complex "[0][1]scale2ref[i][m];[m][i]overlay[v]" -map [v] -map 0:a? -ac 2 ...
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2answers
146 views

How to make mplayer use subtitles?

I am trying to use subtitles with a mkv file in the following way: mplayer video.mkv mplayer -sub video.srt video.mkv mplayer video.mkv -sub video.srt but only the video did play, but without any ...
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2answers
31 views

mov's play without sound unless in iMovie

I have a lot of videos from a Canon mini dv video camera. I imported them from my camera into iMovie, so now I have them all in an event. The videos play perfectly fine in iMovie. I tried to copy ...
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0answers
23 views

ffmpeg: Create Zoom Effect by cropping each frame

I'm relatively new to ffmpeg. So far i created a time-lapse video from a series of camera shots and added music. Now i would like to add a zoompan effect (zoom in and later zoom out). I know there is ...
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0answers
20 views

cut video using ffmpeg results in unreadable file

I am using all-frame seeking to cut video using ffmpeg. ffmpeg -i input_vid.mp4 -ss 30 -t 60 -c copy output_clip.mp4 However it does not work for some videos, returning a not readable video file. ...
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0answers
17 views

ffmpeg looping audio on slideshow the best way

I am trying to get an audio stream to loop over a slide in the background of a slideshow I've made with ffmpeg. I currently have the following: ffmpeg -loop 1 -t 15 -i img_1.jpg \ -loop 1 -t 15 -i ...
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0answers
11 views

Smooth transition in slideshow made by ffmpeg

I create slideshows by ffmpeg with the code ffmpeg \ -loop 1 -t 5 -i t0.png \ -loop 1 -t 5 -i 1.png \ -loop 1 -t 5 -i 2.png \ -i audio.mp3 \ -filter_complex \ "[0:v]fade=t=out:st=4:d=1[v0]; \ [1:v]...
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1answer
35 views

overlaying .png without loosing transparency of .mov using FFMPEG

I am trying to overlay .png(transparent image) over .mov (transparent video) using this blog. I am using basic command like, ffmpeg -i inputVideo.mov -i overlay.png -filter_complex "overlay=100:...
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1answer
41 views

FFmpeg: Remove Unsupported Subtitle Streams (MKV)

I'm making a script which loops through a list of media files and then re-encodes them using FFmpeg. My issue is that I need to remove any subtitles that the MKV container doesn't support. This should ...
0
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1answer
29 views

Video calls are choppy after every few minutes, but test says speed is okay

I have an issue where my video calls / meetings start to lag every few minutes. I am using Wifi and download 91 mbps and upload 9.45 mbps. I called Spectrum (my ISP) and the guy told me I was using ...
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0answers
29 views

Blurry / not sharp / pixely picture on TV (used as monitor)

I have a panasonic TV that I am using as a monitor on my desktop PC. When first bought I have used the integrated video card with a VGA cable and the best possible resolution but I wasn't happy with ...
1
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1answer
123 views

ffmpeg throwing “Non-monotonous DTS in output stream”

So I'm trying to concatenate 3 video files. I'm running Linux, and the command line looks like this: ffmpeg -f concat -safe 0 -i blist.txt -c copy output.mp4 blist.txt contains this: file 'btest/00 ...
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2answers
262 views

ffmpeg : CPU, ram or SSD? [closed]

I want to know what is the most important to convert a mp4 file to mp3 thanks to ffmpeg. CPU ? RAM ? SSD ? The threes ? My server will convert 3-5 mp4 videos to mp3 at the same time. Duration of the ...
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0answers
110 views

Cannot get lossless compression to work with ffmpeg with upscaling on windows 10

I am trying to convert a sequence of png images to a lossless video while upscaling (keeping the same aspect ratio). I have attached one png image . However, every lossless option I use either is ...
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0answers
31 views

FFMPEG command to SpeedUp/SlowDown a video to a specific time

I've been trying to figure out how to write a filter for ffmpeg to take a set of videos and make them all the same time length. For example I have a video that is 35 seconds and a video 15 seconds, ...
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0answers
33 views

Using ffmpeg and scenecut, how might I split a video into individual shots and convert them to .mp4/.gif?

My goal is to import a video and export individual files for each cut. I've read through a number of threads on the site, and this question was most helpful in coming to a solution. ffmpeg -y -i ...
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0answers
42 views

VLC CLI - Can stream out local file, but not rtsp camera stream

So using the following commands I can re-stream and play on the same machine a .ts or .mp4 saved from a camera stream, but i cannot do the same with the stream itself... (fyi: debian 9 w/ vlc 3.0.3) ...
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0answers
28 views

How to speed up ffmpeg?

I use ffmpeg to mix an audio file with a single photo to make a video with the following command: ffmpeg -loop 1 -i image -i audio -c:v libx264 -tune stillimage \ -c:a aac -b:a 192k -pix_fmt yuv420p -...
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2answers
40 views

How can I batch convert videos into 4:3? [closed]

I've got about 112 videos, each ~240MB. All of them are in 16:9 and I'd like to change them to 4:3. What's the most nonresource-intensive and convenient way I can accomplish this without losing any ...
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0answers
37 views

Firefox custom external helper application command for Media Player Classic (MPC)

I want .m3u, .mp4, mp3 or any other media file links from Firefox to be added to Media Player Classic playlist (not played immediately). The command line for adding to playlist looks like this: mpc-...
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1answer
48 views

Skip N bytes every M bytes while reading from named pipe

I pipe data from one process to another, but this stream needs to be filtered. The first process is ffmpeg and the second is ffplay. ffmpeg provides raw video frame for fplay to render, however it ...
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0answers
27 views

Change Perpective to 45 Degree while playing Video in VirtualDub

Is there a filter/way to change the perspective to 45 degree while playing the video? It does not have to be very polished. (I am not looking for rotating video in X and Y directions, I am looking to ...
1
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2answers
57 views

Extracting audio from mp4 has less bitrate

I'm using ffmpeg -i input.mp4 -c:a copy -vn -sn output.m4a to extract audio from an mp4 file. However, when I open the mp4 in Spek, it shows 255kbps AAC and the extracted file is only 200kbps. Also, ...
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0answers
49 views

Keep equirectangular side-data when using video filter on 360 Video in ffmpeg

I have a 360° Video and want to shift it sideways using ffmpeg so that the default viewpoint when opening the video in a player is shifted. I found this question (How to offset a video horizontally in ...
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1answer
41 views

Deinterlacing failed when encoding a file with h264

Tried using several different h264 encoders but all of them make it have this problem where there are horizontal glitches near movement. I tried using ffmpeg but couldn't figure out how to do it ...
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1answer
23 views

How do I simply edit the subtitles of a MKV file while preserving the video, audio, and attachment streams?

So when I look at the original video: ffprobe -v error -show_entries stream=index,codec_name,codec_type example.mkv I see something like this: [STREAM] index=0 codec_name=h264 codec_type=video [/...
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0answers
26 views

ffmpeg never stops when using filter

I'm trying to chop frame-accurate segments from a video (video, audio and subtitles). The command below works fine (from linux command line): ffmpeg -itsoffset -0.56 -ss 124.0 -i "input_file.ts" -...
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0answers
25 views

Synced playback of remote media between various users

Is there software or a wrapper around MPV or other similar audio/video software such as ffmpeg suite that allows users in a swarm to playback media in sync with each other within a few seconds? I ...
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1answer
45 views

FFmpeg: Rotate and Pad Horizontal Video

I have a portrait video (9:16 ratio) taken on a phone, and would like to convert it to a lanscape one (16:9), either with black padding on the side or, ideally, with blurred padding (but not overly ...
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0answers
76 views

FFMPEG : If i try to execute the m3u8 file with vlc work only with the first frame

I use ffmpeg to generate the m3u8 file. I think the problem in the ffmpeg command. the ffmpeg somtimes generate a file m3u8 with old frames it was deleted example m3u8 file: #EXTM3U #EXT-X-VERSION:...
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0answers
27 views

Piping FFMPEG out makes loosing file duration

In order to dynamically encode file and upload them to a server, I output ffmpeg to pipe:1 and use curl to post the result to a file. The problem is when I use MediaInfo to check the file, it appears ...
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1answer
46 views

Video frame capture: I-frame vs P-frames

I'm trying to capture various frames within a x264-encoded video files into png files (in python), and then compare the quality of them: cap = cv2.VideoCapture(filename); //get frame_number for ...
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2answers
64 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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0answers
31 views

Ubuntu 16.04 - Video Player glitched UI when trying to play Peek MP4

I just installed Peek ( A screen recorder extension ) and did a test recording. I saved it as an mp4 and tried to play it in the Video Player for Ubuntu (I have installed the dependencies needed to ...
0
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1answer
118 views

How does VLC-player play Samba-shared video files?

I have to Virtual Machines (Ubuntu 18.04) which are running on the same internal network. The Server-VM stores a video in a folder which is shared to the Client-VM using Samba. The bitrate of the ...