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

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14 views

What is the difference between Burning via Data Size over Time Duration

Assume i have 2 Video Files, both 20 minutes long, both same format. one is 2 GB (File A) and one is 200 MB (File B) because it's been heavily compressed. Now if i remember correctly i can burn 120 ...
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53 views

how to speed up the process of the ffmpeg command

I want use the overlay filter to composite the video with some image, Command is ffmpeg -i 30.mp4 -i out1.png -i out2.png -strict -2 -filter_complex "[0:v][1:v]overlay=enable='between(t,0,1)' [out]; ...
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45 views

ffmpeg generates videos with start time greater than 0

I'm trying to cut videos with ffmpeg. I know how to do it in the "normal way": ffmpeg -i test.mp4 -ss 0 -t 6 -c:v libx264 -profile:v main -level 3.1 -preset medium -crf 20 -r 25 -b:v 1200k -minrate ...
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29 views

FFMPEG results in a black video from converting images

I am attempting to create an mp4 video from a sequence of images numbered 1 to 100. The problem is that I keep on getting an output video that is black. Each images is as such all the way to 100. ...
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36 views

Configure ffmpeg and ffplay to PAL signal

I have a PAL camera and a stk1160 based video grabber, which is correctly recognised as a /dev/videoN under linux. I am able to watch the feed with vlc after setting up the video standard as a PAL: ...
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22 views

Video card not working only on one computer

I got this weird problem. My girlfriends computer suddenly just stopped displaying any picture oon the screen. Video card is Nvidia GF9400GT, which is originally silent, but I've added one 60mm fan to ...
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38 views

Can someone explain what “video acceleration” is?

Basically, a user came to me complaining that when she opened a certain video file in VLC, she received an error saying: "Your video output acceleration driver does not support the required ...
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152 views

avconv stream video from USB webcam without delay

I need to stream video from USB webcam. I am using avconv, but it has delay min 5s. Is possible to stream in real time without delay? avconv -f video4linux2 -i /dev/video0 -vcodec libx264 -f mpegts ...
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33 views

MPEG DASH with H264 + H265

I've tried to build an MPEG-DASH stream coding some bitrates in H264 and some others in H265. In a nutshell I'm trying to code the same video with ffmpeg for the lower bitrates in H264 and the highest ...
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50 views

Trying to identify the cause of this display corruption

I don't actually know where the root cause of this issue lies or even how to accurately describe it so I will do my best to provide the details of the situation. Hopefully someone will have a better ...
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151 views

How to add zoom in effect to a video?

I'm working in a project where I should generate a video, from an input set of videos or images. The problem is when I generate the video I must add a zoomin effect to each input element. I solved ...
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41 views

Importer screen stays empty

I'm trying to record my old video tapes on my computer, using the Pinnacle Studio 700 PCI Card and Windows 7 Ultimate (SP1, 32 bits). The PCI card is recognized as Pinnacle AV/DV2 and the most recent ...
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28 views

How to test videos for artifacts?

I am having some issues with videos where the encoding gets choppy for a stretch: frames jumping back and forth, pixels bleeding from one frame into another. Like in this video right there. I know ...
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195 views

FFmpeg Unable to find a suitable output format for … [RPi]

I was trying to set-up ffmpeg on RPi to stream video from webcam. This is my launch script: ffserver -f /etc/ffserver.conf & ffmpeg -v verbose -r 5 -s 640x480 -f video4linux2 -i /dev/video0 ...
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110 views

How to set profile compatibility of an fMP4 using ffmpeg?

I'm using ffmpeg to generate a fragmented mp4 stream that will be consumed by an HTML5 player. I think I have a correctly formatted mp4 stream of data with an empty moov at the start and a series of ...
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33 views

How do I view an AVI file that requires GTCC codec?

I have pretty much tried every type of decoder package out there (K-lite, CCCP, Satsuki, etc.) but no luck. I used an old webcam back in the early 2000s when recording. Really need to know what this ...
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27 views

How can cut the time it takes to tag videos using Windows Explorer?

When I try to tag a video using windows explorer it takes roughly 10-20 seconds for it to complete. If I try to tag multiple videos using the same tag it takes even longer? How can I cut this time ...
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153 views

FFMpeg generated m3u8 segmented videos long delay before playback starts

I am using ffmpeg to generate a segmented list of files in order to stream them to an iOS app. The list of files is generated fine but when it comes time to play them, the video needs to be downloaded ...
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254 views

Trying to retrieve deleted Facebook videos from the cache

I viewed two videos on Facebook. Seconds before I could download them, the user deleted them. I've been trying desperately ever since to find them on my hard drive. I viewed them on Firefox. I ...
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11 views

modify overlay on video previews in the Explorer sidebar

I want to get rid of the stupid overlays that video files are shown with in the Explorer sidebar in Windows (7, but other versions as well). I mean thanks, but 1995 rang and they want their UI design ...
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208 views

ffmpeg add alpha channel to a video

Basically I have a video with a green background, and I mean a perfect green background (red = 0, green = 255, blue = 0) and I want to convert this to alpha (i.e add an alpha channel where 0 255 0 ...
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59 views

Higher overlay modes on Freescale i.MX 6 Dual

I am playing 1080p video on Freescale i.MX 6's IPU 0 Display 0 Background DI (/dev/video16) and want to overlay it with Qt application via Overlay DI (/dev/fb1). It works really great, but only in ...
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145 views

How can I reduce the choppiness of my ffmpeg conversions

Here are the options I'm sending ffmpeg: ffmpeg. -i input.flv -crf 18 -profile:v baseline -level 3.0 -pix_fmt yuv420p -preset veryslow output.mp4 Here's the input file: ...
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35 views

Cannot access random part of youtube video in firefox

My computer is running on fedora 19 with gnash install (installing adobe flash is not an option for me since it's proprietary.), as well as Firefox. Actually I can watch many YouTube videos using ...
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186 views

Merging audio and video files of different length using mp4box

I have to merge video and audio file together. Currently I am using this command mp4box -flat -add <video> -add <audio> <outputfile>.mp4 But the problem is, if the video is of say ...
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298 views

How to save udp stream to .ts files whith ffmpeg while keeping timestamp?

I need to record a live udp stream containing multiple TV programs ( up to 30 ) to .ts files .To do so i'm using FFMPEG . I have a muxer at work , but i dont go there everyday so im using a sample ...
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185 views

MPC-HC + AC3filter playing too fast with DTS-HD MA

Video plays too fast, as if fast forward was enabled. It used to happen with VFR MKV video, and was fixed with View > Render Settings > Presentation > Enable Frame Time Correction. This week this ...
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89 views

Manually add video file to Chrome cache

This might be a bit of an odd question considering most people want to do the opposite (i.e, save a video file to disk from cache), but I'm using CyTube (http://cytu.be/) to simulwatch shows with my ...
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187 views

How to disable widescreen video in Skype?

Since the latest (forced) update, Skype insists on displaying my video in widescreen (16:9) format. The problem with this is that it has a lower vertical resolution: in the old 4:3 mode, the video ...
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502 views

FFmpeg Upscaling Video

First I just want to say a bit more about my title, I am not referring to the fact that upscaling doesnt add data(as often asked when upscaling) - but something different. Example I have raw video ...
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37 views

DVD presence not detected until after Windows Update

I am running Windows 7 with Power DVD. I had a couple of DVDs and I googled to find that The Dark Knight Rises is particularly a frequent evidence the issue. When I insert the DVD into the drive, ...
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58 views

Is there multiple types of transitions in ffmpeg while merging two or more videos?

I have 3 video files. I am using ffmpeg library to merge them all. While merging them right now I am using fade In/Out transitions only. I want to enhance that feature in my site, can I do ...
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147 views

Terrible buzzing/screeching sound and frozen keyboard after playing video

I have a 3 year old PC laptop, and recently the following started to happen: When I'm watching videos online or from the hard drive, my computer freezes and makes this very unpleasant ...
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127 views

Is it possible to replace the video card in IBM Lenevo thinkpad w510

I have IBM Think PAD w510. When i turn on thwn i get 1 long beep and 2 short beeps with no display ...
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44 views

How can I select the most “steady” frames from a video with ffmpeg, where less motion occurs?

I would like to use ffmpeg to select out frames from a video to make a preview picture. In the past I selected out frames manually: I extracted 1000 frames at equidistant time and then I picked out ...
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132 views

How to check .mp4 file is corrupted or not.

I am recording two different videos in the .mp4 format using ffmpeg command and after that combining them. But sometimes one of the video is get corrupted because of that it will affecting on the ...
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446 views

Embed a Non-YouTube video in PowerPoint 2013

How can I embed a video from cnbc.com or foxnews.com in a PowerPoint 2013 presentation? I am aware of how to embed a YouTube video in PowerPoint 2013, but when I try to embed a video from any other ...
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137 views

Upscale any video-size while concatting multiple videos in ffmpeg

I already asked this question at Stack-Overflow, but they said I should post it here, so here it is: I looked for 2 hours through the documentation, but I couldn't figure it out. I currently write a ...
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661 views

ffmpeg - complex filter putting 2 videos side by side results in audio out of sync

We have 2 videos. One is a professionally produced video by an artist that performs a song stopping in certain parts to let the user sing. The second video is a stream that is recorded while the user ...
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518 views

Play two files in VLC dummy and give sout parameters to both of them

I want to add multiple files to VLC's web interface. And the commands below do exactly that. Two files are added to the VLC's web interface's playlist. But as you can see, that's not all I wanted - ...
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59 views

Webm video flashes compression artefacts

Doing som testing on capturing video from VirtualBox for a screencasting project. VirtualBox uses webm for video and it works sort of OK. However, it has "flashes" of heavy compression artefacts. ...
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570 views

stream byte arrays to a video using ffmpeg

This is what I am trying to do: I receive jpegs from an IP camera. If motion is detected I want to upload the jpeg still shot to my server. To save on bandwidth I save each jpeg to a file on my ...
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124 views

How to stream video without a Gui?

I need to set up a computer to put video on several screens at the same time (for charity related stuff). To save as many resources as I can from the original computer (which is getting old), I have ...
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134 views

How i could cut exactly frames from an avi with ffmpeg

I use the command below to cut it to frames. I want 48 frames for my video which is 7 seconds. ffmpeg -i output.avi -r 6.4 -s sxga images\\image%d.jpeg It creates me the frames but i was use it ...
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354 views

ffmpeg HLS demuxer handling of videos with overlapping timestamps

I have a HLS stream, that contains a number of arbitrary TS segments, some of which may refer to the same file. Desktop and mobile Safari plays it just fine, e.g. if I have a playlist that contains ...
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146 views

Using pipes on ffmpeg has different behaviour than using files

I am using pipes to provide input and to send out output from FFmpeg The command I use is essentially ffmpeg -i pipe:0 -f flv pipe:1 I am using a Java program that basically provides an input ...
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18 views

PC HD Video Card Radeon Passive Cooling No display when hardware installed

Hi guys i'm noob to computer hardware, i attached my Video card to the motherboard, but it's not displaying anything, do you guys know what i'm missing here, does this video card requires separate ...
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11 views

“Presenter view” for second monitor?

I have a laptop, which is connected to a projector. Is there any program or method, which can give me a small window on the laptop's screen, of what is displaying on the projector? Sort of a ...
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81 views

H.264 Pro Recorder Files not closed properly

I have several files that were recorded using a BlackMagic Design H.264 Pro Recorder. It would appear that somewhere in the process, the recorder did not close out the file properly when the ...
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41 views

Audio/Video Doing weird things, with new Connections

I have a Logitech G430 USB headset, and whenever I seem to plug in a USB with things on it, or with nothing on it, I will get the Ping of a new connection then ALL audio shuts off. Not only that, if I ...