Questions tagged [video]
Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.
0
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0answers
9 views
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 ...
-2
votes
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 ...
0
votes
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 ! ...
0
votes
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 ...
0
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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 ...
0
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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....
0
votes
0answers
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 ...
1
vote
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....
0
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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 ...
0
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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 ...
0
votes
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 "[...
0
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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
votes
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 ...
0
votes
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/...
0
votes
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
votes
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 ...
2
votes
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 ...
0
votes
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 ...
0
votes
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 ...
0
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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.
...
1
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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 ...
0
votes
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]...
1
vote
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:...
1
vote
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
votes
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 ...
0
votes
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
vote
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 ...
0
votes
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 ...
1
vote
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 ...
0
votes
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, ...
0
votes
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 ...
0
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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)
...
0
votes
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 -...
1
vote
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 ...
0
votes
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-...
0
votes
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 ...
0
votes
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
vote
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, ...
3
votes
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 ...
0
votes
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 ...
0
votes
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
[/...
0
votes
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" -...
0
votes
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 ...
1
vote
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 ...
0
votes
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:...
0
votes
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 ...
0
votes
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 ...
0
votes
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:...
0
votes
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
votes
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 ...
