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

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1answer
41 views

How do I combine videos and include blank space with ffmpeg?

Suppose I have a series of video files to combine with non-overlapping times: 1.mp4 [0:00-0:45] 2.mp4 [1:00-2:00] 3.mp4 [2:10-3:00] This example has three segments, but in general, there may be ...
0
votes
1answer
22 views

Apply Gamma correction in avconv or ffmpeg

I cannot adjust a video using avconv or ffmpeg with Gamma correction. I use Debian Jessie, so I first suspected that avconv was incomplete, so following this question, I built ffmpeg myself. Using ...
0
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1answer
47 views

Trimming and joining media files using ffmpeg

I am trying to remove a segment (00:26:00 - 00:32:30) from a video file input.mp4. Since there is no way to do that directly using ffmpeg (as far as I know), I am instead cutting the segments which I ...
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0answers
20 views

How does motion estimation work?

I am trying to understand the basics of video compression. I have found many resources addressing this particular subject, but somehow, I haven't clarified it yet on my mind. How does motion ...
0
votes
1answer
1k views

Disabling “System and compressed memory” (ntoskrnl.exe)

I am very exhausted by this. This program is destroying my computer. I have an ASUS G750 series laptop, which has 16gbs of RAM and a haswell i7 inside it. It is just a year old. I upgraded from ...
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0answers
17 views

Viewing video's on location from multiple devices

I'm not sure if i placed this question in the right community, my apologies if it's wrong. We have made video lessons that are on Youtube (and our NAS) at the moment. We want to go on location ...
1
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0answers
39 views

VLC Media Player Desktop Streaming Optimization

I need to stream my Desktop over HTTP using VLC Media Player. My requirement is to achieve the streaming delay less than 1s. Now I am achieving delay of about 3-5 seconds. What ...
0
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0answers
21 views

How can I get HTML5 video playback accelerated using VDPAU?

For systems that have accelerated video playback using VDPAU, how can I use this capability to accelerate playback of HTML5 videos? I know, for instance, with Firefox you can enable GPU-based ...
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0answers
13 views

Windows 10 Movies & TV: how to set the original video size

Is there a keyboard shortcut or another command to resize the window of the Windows 10 intrinsic Movies & TV app to watch the video with the scale 1:1 in it?
0
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1answer
26 views

Video streaming lags and creates audio buzz

To begin with, I need to state that I have actually done search on this. All I could find were various solutions that didn't apply to me, and in the end it seemed like it is very specific to ...
1
vote
1answer
15 views

Coolers in videocard

Videocard r9 380. In normal mode(surfing ) works 1 cooler on videocard. Does he need to work or no? I know, that 2 coolers turn on with 45 degrees. But I read that in normal mode coolers doesnt work. ...
1
vote
2answers
64 views

ffmpeg - trim and merge video clips without reencoding

I have two videos that I want to trim, and then merge the trimmed output. They're all the same size/codec so I'd like to do that without re-encoding too much. But if I do: ffmpeg -i clip1.mp4 -ss 1.2 ...
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0answers
17 views

Powerpoint videos don't auto-play the second time

I have created a powerpoint 2013 custom show with image links to slides with videos. I have set the videos to rewind after playing and play automatically. Whether the video finishes, and advances back ...
0
votes
1answer
40 views

Cutting and merging camera's H264 video results in corrupt file

I am not sure is the problem with the specific video or incorrect commands. I have tested with the latest ffmpeg 4/4/2016 build and older v2.8.6. The Sample.avi is recorded by a PTZ camera. To cut ...
0
votes
2answers
48 views

Windows 7 slow at opening media files

A few days ago I encountered a strange problem that since then consistently persists, I noticed that Windows 7 all of a sudden became exceptionally slow at opening video files. I haven't got the ...
2
votes
1answer
33 views

vlc command for lossless analog video capture

I want to digitize my VHS tapes using a video capture USB thingy. I wanted to use ffmpeg but sometimes it freezes recording and I haven't found a solution yet, I cannot rely on this. (See: ffmpeg ...
-1
votes
1answer
36 views

My computer is functioning very slow and entering into a 'not-responding' state often. And, after every 1/2 hour or so, it automatically restarts [closed]

My computer is functioning very slow and entering into a 'not responding' state often. And, after every 1/2 hour or so, it automatically restarts. Especially when I try to play a video (even on ...
0
votes
1answer
39 views

ffmpeg time format in filter_complex

I wanted to trim video. I mean I wanted to select few sections from one video and then concat they or mix they together! I did it. But in "filter_complex" I can not type start point time format like: ...
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0answers
25 views

Is there a way to create a video from images with Ken Burns Effect using ffmpeg?

I was able to create a simple zooming effect but couldn't do a pan and zoom using ffmpeg. Is it possible to do that? This is the code i have so far: ffmpeg -y -i image%d.jpg -r 30 -vf ...
-1
votes
1answer
39 views

How far can I resize a x264 video without blurriness?

I have an x264 video at 700x400 encoded at 1400 Kbps with High Profile Level 3 which I want to play at 1366 x 768 screen resolution. How far can I change or resize the video player window without ...
0
votes
1answer
21 views

Smooth movements are jerky on my laptop's integrated screen. Any software to test it out?

I tested my new computer with multimedia and unfortunately smooth movement looks jumpy and jerky as in this video when being played in the internal monitor. This problem doesn't only affect local ...
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0answers
21 views

Play video in different resolution

How can I play a video in a different resolution if I want to watch it in fullscreen mode but without changing my setting in windows. I just want to switch to this resolution when playing a video like ...
0
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0answers
18 views

Play H264 stream on TV?

Is there any device that I could attach to my TV so that I could play H264 stream on it? My H264 stream is a live stream, using VLC player and a PC, I could open it by accessing: ...
0
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0answers
23 views

How to display incoming h264 stream?

I have a device streaming out live h264 video using RTSP (TCP). I can open the video using a PC and VLC player. To open it, I just need to access "rtsp://192.168.1.168:554/hdmi". However, now my ...
1
vote
2answers
59 views

FFMPEG: How to split a video *NOT* on a GOP boundary/Keyframe WITHOUT transcoding?

Using FFMPEG, how can you break a video up into equal length segments THAT MAY OR MAY NOT start on KeyFrames? Assuming you are familiar with the segment format and the break_non_keyframes option, ...
0
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0answers
38 views

fast video overlay on a png image

I am using the following code to overlay my video on a background .png file: ffmpeg -i C:\image.png -i C:\input.mp4 \ -filter_complex "[1:v][0:v]scale2ref=-1:950[ovrl][0v]; \ ...
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votes
0answers
11 views

FFmpeg - video re-encoding and remuxing

I am using FFmpeg C API to re-encode a video and to remux it (I have been following the official samples, that work after some modifications). Since I only have to process (modify) some video frames, ...
2
votes
1answer
20 views

Displayport monitor to HDMI video card

I recently purchased the following: Computer - XPS 8900 w/ NVIDIA(R) GeForce(R) GT 730 2GB DDR3 Monitor - Dell 22-inch Monitor - E2216H My issue is that the monitor has VGA and Displayport and the ...
1
vote
1answer
38 views

Automatically extract ALL audio streams from a video file into separate files?

I have a .mov video file, for which ffprobe/avprobe reports: $ avprobe -show_streams test.mov Stream #0.0(eng): Video: dvvideo, yuv420p, 720x576 [PAR 64:45 DAR 16:9], 28811 kb/s, PAR 236:162 DAR ...
0
votes
1answer
31 views

Ffmpeg lose streams while using -map 0

I had a strange issue using ffmpeg on Ubuntu 14.04. I run a command ffmpeg -i output2.avi -c:v h264 -minrate 2000k -maxrate 5000k -bufsize 2000k -profile:v high -level:v 4 -coder 1 -s 640x360 -bf 0 ...
0
votes
1answer
53 views

Windows 8.1 flickering Black Screen after update, without safe mode

I think I will pull my hair out of my head before I'll solve this problem. I decided to do an Update in my Windows 8.1, cause it wasn't updated a year already, and cause of some problems that I had ...
1
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0answers
7 views

How to insert multi-colored text within Vegas Pro 13?

I am trying to make a simple text frame with two different colored text segments, but I cannot seem to be able to do it. I insert the first color fine, but if I change the color for the next section ...
0
votes
0answers
14 views

Redirect a video monitor

I don't know a lot about the internet, nor video, but I thought I'd ask here anyway. I have an old Motorola video monitor that is "hard coded" to send all audio and video to the company server, ...
2
votes
2answers
24 views

Add TITLE and COMMENT metadata to .MOV video file?

In Windows 7, I load a .MOV video file in VLC Mediaplayer. In VLC, I press CTRL+I to show the Media Information dialog of this file: Media Information dialog I enter a new TITLE and a new COMMENT ...
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votes
2answers
50 views

What happens when I display 1080p video on a x720 resolution setting?

This one puzzles me, and I'm looking for a very technical answer. Say I'm on YouTube and I chose 1080p for the video resolution. However, my screen's resolution is 1280x720. This means I'm ...
0
votes
1answer
28 views

ffmpeg: re-encode a video, keeping settings similar

I'm dealing with some mp4 videos that were encoded on mobile phones and are pretty huge. I think ffmpeg can do better. I'm trying to figure out what flags to use to preserve fps, resolution, and ...
1
vote
1answer
13 views

Estimate video size for different resolutions

I am developing a web application for a customer, basically I need to estimate the costs of storing photos/videos on AWS for our user database. I'd like to know the average size (or size range) of 1 ...
0
votes
1answer
19 views

ffmpeg fails to add subtitle to video on mac

I use this command fmpeg -i out.mp4 -i drbraun.ass -map 0 -map 1 -c:v copy -c:s mov_text out1.mp4 and get the output as the following, while the output file has no subtitles in it. I guess it might ...
0
votes
0answers
23 views

Increase buffer Video on FFmpeg

I apply the following command on FFmpeg: ./ffmpeg -re -i 'udp://237.0.0.1:1234?buffer_size=2000000&fifo_size=1000000' -vf scale=720x480 -c:v libx265 -c:a copy -f mpegts ...
0
votes
0answers
25 views

'Invalid pixel format error' when converting from mj2 to ffmpeg

I've been trying to use ffmpeg to convert some mj2 files to mp4, but I can't figure out the correct flags to pass Naively, I tried things like ffmpeg -i vid_in.mj2 vid_out.mp4 but I get errors like ...
0
votes
1answer
22 views

Convert Audio 5.1 to Stereo [closed]

I am having issues playing the MKV video files I download on my friends TV, the TV shows I download have been playing just fine with no issues. The video portion of the files play flawlessly however ...
0
votes
2answers
75 views

How to join split flv files?

I'm in my 3rd day of trying to download one 4-minute video. It's a Flash FLV that's split into three parts, the first two are about 5MB, the third about 3MB. Only the first part has normal FLV ...
0
votes
2answers
44 views

Will Second 2560x1440 monitor slow down my iMac?

I have this iMac: http://www.hoxtonmacs.co.uk/collections/imac-27-inch/products/imac-27-inch-core-i7-3-4ghz-mid-2011 It has 32GB RAM, and I use it to edit videos in Final Cut Pro X and make music ...
0
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0answers
34 views

Create timelapse video with frame integration using ffmpeg

I have a real-time 30fps video, and I wish to convert it to a timelapse 30fps video so that each frame of the target video is the result of arithmetical mean of 10 original frames in a linear ...
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votes
2answers
58 views

My videoplayer is suddenly buffering local videos

Today I was watching Band of Brothers which I have stored locally on my hard drive in 720p. Watching the first two episodes went perfectly as usual, however when viewing the third episode my Kodi ...
0
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0answers
133 views

ffmpeg rtsp stream recorded no audio on output file

I am tying to record video and audio using openRTSP and ffmpeg. The below command record video but the it doesn't contain audio. openRTSP -D 10 -v -t -c -b 800000 ...
1
vote
0answers
20 views

Automatically join or trim many video files

I have two underwater network video cameras on a deep-sea observatory that are tethered to land by a fiber optic cable and stream video data back to shore. I'd like to find a way to automatically cut ...
0
votes
0answers
29 views

Subtitles in VLC are wrong

I have an .MKV file and the subtitles are incorrect I tried with different encondings as this answer states, but I with no luck. The subtitles are embedded inside the file so I can't open them in ...
0
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0answers
15 views

Detect missing chunks of video

I (non-illegally) download videos using Frostwire, and I'm not sure if the way the torrent downloads the file causes this or what, but when I open an incompletely downloaded video file (in VLC Media ...
0
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0answers
34 views

Better solution to video capture

I'm looking for ideas, then whatever solution will be welcome :) I have an infrastructure that I used 20 EasyCap USB2.0 in 10 different computers to capture video via ffmpeg by ffdshow (2 usb for ...