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Questions tagged [video]

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

-1
votes
3answers
220 views

Why is the FPS in Handbrake's status bar so low relative to the FPS of the output video?

I'm using Handbrake to re-encode an MKV video with the goal of shaving a hundred or so megabytes off it to keep it under FAT32's 4.2GB file size limit. During encode, Handbrake's status bar shows a ...
0
votes
0answers
26 views

ffmpeg segment muxer causing timecode error

I'm attempting to break down a single input file into 4 separate output files using segment in ffmpeg. I'm stream copying to the separate output files (the input uses the DNxHD codec, so there are no ...
1
vote
0answers
19 views

How to restream an HTTP stream over RTSP with VLC?

I want to use VLC 3.0.6 to take in an HTTP stream and restream it over RTSP, basically using it as an RTSP server. I tried using this command cvlc http://0.0.0.0:8080/stream?topic=/iris/camera1/...
1
vote
1answer
28 views

Repair broken avi file with known codec and frame size

Is there a way to fix a broken avi (computer powered off during acquisition) if we know the frame size and the encoder? Opening in VLC and repairing it does not work. I have tried following some top ...
24
votes
2answers
25k views

Create video with 5 images with fadeIn/out effect in ffmpeg

With 5 images I have to create a video of 60 seconds in ffmpeg, each image has to display for 15 seconds. after 15 seconds, first image has to fade out and 2nd image has to fade in, after that 2nd ...
1
vote
1answer
15 views

FFmpeg : How to get last frame from a video

I have a video.mp4 file i want to get last frame from video/mp4 file and save as a image in local. If it is possible then please suggest me. Thanks.
5
votes
2answers
26k views

any way to recover corrupted mp4?

I have an mp4 file that seems to have gotten corrupted somehow: $ file HDV_1042.MP4 HDV_1042.MP4: data $ mediainfo HDV_1042.MP4 General Complete name : HDV_1042.MP4 File ...
0
votes
1answer
26 views

Download a video from news website

I was on the local news today and would like to download the video from their web page. I have been strugling with terminal for an hour now. What is the best way to download a video like this? https:/...
0
votes
0answers
4 views

Apple ARKit Unity [migrated]

I have a problem with Apple ARKit and Unity. I want to do an AR Experience with 12 different Targets that you can scan and on eacht target there is a Video. The 12 Targets are set as ReferanceImages, ...
-1
votes
0answers
11 views

How to get the current video buffer size?

When we look into the stats of a video streaming on twitch/youtube, we can see a metric called buffer health(youtube)/buffer size(twitch), which basically tells us how much video has been loaded. I ...
0
votes
0answers
24 views

FFMpeg - How to move overlay a gif from point a to b

FFMpeg - move overlay gif from a point a to b. I used somebody posted here FFMpeg - move overlay from point a to b to c to d. I modified it like this: -i input.mp4 -ignore_loop 0 i example.gif \ ...
0
votes
0answers
16 views

Google Chrome video streaming freeze fix?

I have a fresh new Windows 10 install with the latest drivers, chipsets, etc. Everything is up to date and I use an SSD as my main drive. It works perfectly in most cases but as soon as I use any kind ...
0
votes
1answer
776 views

New system, does not boot, 1 long beep two short

I bought 970A-G43 motherboard with FX-6300 processor. Hooked everything and plugged in an HD 6950 video card. On boot I get 1 long and 2 short beeps regardless if I plug the video on either of the 2 ...
1
vote
1answer
88 views

How can I blur the background in Skype?

How can I blur the background in Skype? I read on https://www.ultimatepocket.com/skypes-cool-useful-background-blurring-feature-goes-live-for-the-pc-and-mac (mirror): [blurring the background is] ...
0
votes
0answers
33 views

Invoke SDL configuration variables in windows

I am looking to find a way to invoke the config variables described in \include\SDL_hints.h either globally in windows or for specific applications (similar to how you can do so in linux distros), but ...
0
votes
0answers
8 views

YouTube API not working in chrome

So I am using the iframe enablejs=1 parameter solution to code a overlay with a custom arrow and image on top of an iframe embeded youtube video. The on click event loaded the iframe src with the ...
0
votes
1answer
27 views

FFmpeg How to Overlay two videos with 0.5 Transparency

I have one command which has some issues. if one video have shorted length then second video. first video will pause and second will continue to play. other issue is that this command is very slow ...
0
votes
0answers
13 views

Inserting a Video in Microsoft Word; works on my computer, but doesn't work when opened on another device

When I insert a video in a Word document on my Macbook Air, I am able to play it perfectly, but when I open that document on another device (a Windows laptop), the video does not play. Is there any ...
0
votes
0answers
30 views

ffmpeg conversion is very slow - How to optimize it?

I am cropping and splitting a video of size 13476*1500 into 4 parts, below is the filters. The conversion is very very slow! Is there a faster way to convert the videos? please help! And also i want ...
1
vote
2answers
212 views

How can I save a video with a seperate audio data in vcl?

I've got a video and separate audio data. I can open them both and watch them together in VLC but I would like to have only one video with the audio included, so save them together as one video with ...
1
vote
2answers
3k views

VLC displays black screen for some of my saved pictures

After my Windows 10 Creators Update few days ago, my VLC displays black screen for some of my saved pictures. Some of my saved pictures will display in VLC fine though. It seems that I can use the VLC ...
-2
votes
0answers
28 views

How can I get the hours;minutes;seconds,milliseconds of the beginning of every single image of a video?

On windows 10 or 7 (I have both), I want to use any code or command that can take out the hours;minutes;seconds,milliseconds of the beginning of every single image in a video, and have it on a text ...
3
votes
1answer
3k views

How to merge MP4 files with different bitrates?

I want to merge two or three MP4 videos with MPEG-4 AVC video codec and MP3 (sometimes MP3 Surround) audio codecs. Both audio and video can have different bitrate. If it will be possible, without ...
0
votes
0answers
12 views

Any extension or setting to block videos from auto playing?

I already disabled auto playing on desktop Chrome (via chrome://flags/#autoplay-policy) yet videos would remain autoplaying in pages like https://www.scmp.com/news/china/politics/article/3013611/...
0
votes
0answers
14 views

The video's on my web-page all of a sudden take ages to load [closed]

I've been hosting a Django website at home (on a old Dell poweredge r710) for few months now and until recently everything worked fine. I'd be able to just watch the video's on the site wherever I ...
0
votes
0answers
25 views

Unable to use HW acceleration codecs

I am trying to get ffmpeg HW acceleration on an UpBoard . It uses an Atom x5 z8350 processor and Intel HD 400 GPU I have also followed this tutorial in order to compile ffmpeg with libmfx enabled. $ ...
5
votes
2answers
1k views

ffmpeg: Removing parts with silence: Efficiently remove several parts of a Video

I'm trying to remove parts of a video, where there is no (or little) audio. For this I use audacity (Analyze->Sound finder) and export the Label Track. This results in something like this: 0.000000 ...
0
votes
0answers
20 views

Any security camera software that can take advantage of a large numbers of CPU-cores and threads? [closed]

Driven by a fear of a persistent stalker, I am urgently developing an audio /video security system for my home and yard. Towards that end I have already purchased a La view NVR and, as a start, ...
0
votes
1answer
35 views

HLS conversion issue while using “var_stream_map”

I am using the following command to convert an existing .mp4 video into multiple video and audio formats ffmpeg -y \ -i sample.mp4 \ -hls_list_size 0 \ -hls_key_info_file keyfile \ -b:...
0
votes
0answers
24 views

How to reduce the first file size in hls conversion ffmpeg for variable streams

I am using the following command to convert an existing .mp4 video into HLS format with multiple bitrate and resolution streams ffmpeg -y \ -i sample.mp4 \ -threads 0 \ -hls_init_time 2 \ ...
0
votes
0answers
19 views

Higher quality of JPEG frames extracted with FFMPEG from MP4 video

I got a 4k mp4 video file and my goal is to extract the individual frames. Unfortunately, the video is quite big ~10GB and storing all the frames lossless (e.g. using png, results in 12MB per frame) ...
0
votes
1answer
348 views

Video editing software for Mac OS X

What are the best recommendations in video editing software for Mac OS X?
-1
votes
0answers
21 views

Windows 10 displays videos as low-res and overly pixelated when compared to playback on other devices

Please see the below screenshot from one of the movies where I am experiencing this. All movies have the same pixelated look. The quality of the movies are good on other devices. All my drivers are ...
0
votes
2answers
3k views

Solution for choppy video because of bit-rate too high?

When I play a 1080p 10bit-depth video with VLC-player, the video goes choppy and even freezes. I'm using Dell Inspiron 1525 and VLC 2.1.2. Windows Vista Home Premium. Mobile Intel(R) 965 Express ...
0
votes
0answers
20 views

Extracting frame timestamp (PTS) and seting it as a file name

I have a video file that lasts 9.3s and was recorded at FPS=10. I would like to use FFMPEG in order to extract frames from this video at arbitrary FPS (e.g. FPS=3). Example command: ffmpeg -i input....
-1
votes
0answers
18 views

Why 4K looks very weird on an 1080p monitor?

So, I have a 1080p monitor and I have decided to watch 4K on it, And well, It looked very weird on it, I mean 720p Looks better than the 4K on my 1080p monitor, Also on it the Grass in Rise of the ...
0
votes
0answers
7 views

ffmpeg video does not play on whatsapp [migrated]

I've been trying to get a video to play on whatsapp but I can't get it to work. I've read almost all the stackexchange posts on this topic but nothing seems to work. I use the following command to ...
0
votes
0answers
18 views

Opening a full screen browser behind other open windows by default

I often use YouTube videos as visual and audio background ambiance while I work. (example: https://www.youtube.com/watch?v=IvJQTWGP5Fg) Currently, when maximized or placed in full screen mode, ...
0
votes
1answer
19 views

What is the difference between proprietary codecs and open source ones? [closed]

Let's say H.264 is a proprietary codec which is protected by patents owned by various parties. However, there is a open source h264 encoder called "x264". Do I need to pay royalty fee for using open ...
4
votes
6answers
7k views

VLC + Windows 7 = Pixelated playback?

I'm running a freshly installed Windows 7 Professional (not RC or beta, and not illegal stuff). I installed my usual software, and I was surprised to see that VLC video playback is pixelated when ...
0
votes
0answers
46 views

Why psnr and ssim values generated by ffmpeg psnr filter are different from x264 tune psnr?

Currently,i'm focus on how to use psnr&ssim metrics to evaluate the video encode quality of libx264 and hw h264 encoders. And i find that libx264 encoder has the option to log stuff psnr&ssim ...
1
vote
0answers
1k views

ffmpeg show audio codecs supported by container format and video codec

To automate scripts for manipulating video files, I would like to get a list of supported audio codecs - ideally with their encoder names - based on a video codec and container format (might also be ...
0
votes
0answers
36 views

set default audio track for mkv movies

i am currently running a bash script on my linux debian system to copy some dvds. I am using makemkv for that. I also use minidlna to share the movies with my other devices in my network. The Problem ...
0
votes
1answer
3k views

Screen recorder fails to record screen and records black screen

I tried to record screen for recording a video which was embedded in an application. The screen recorder used was snagit. Video is recorded, but only black screen gets recorded. The same application ...
28
votes
2answers
59k views

Compare two video files to find out which has best quality

Suppose I have same video material encoded in two (or more) files. I'd like to run some utility on them which groundly pointed out which file is "best" in quality. "Groundly" means that I'd like to ...
6
votes
4answers
24k views

Replace audio + sync + save all to a new video file – VLC

I have a video with audio. I have an .mp3 file of the same video but in another language. I need to do two things. Replace the built-in audio with the new audio. Because the new audio is not exactly ...
1
vote
1answer
34 views

How to control quality and size of webP images extracted using FFmpeg?

I am using a Windows 10 PC and I am extracting frames from video using FFmpeg as described in this other question and answer thread on SuperUser. How do I control the size of webP files that are ...
1
vote
1answer
107 views

FFprobe - Is it possible to get the “seeked position” of a video stream without re-encoding it?

I have the following command: ffmpeg -f f32le -ar 44100 -channels 2 -i pipe:0 -ss 3 -i input.mp4 -y -f mp4 -map 0:a -map 1:v -c:v copy -use_editlist 0 output.mp4 When copying the video stream ...
0
votes
1answer
22 views

How to extract frames from video in webp format from video using ffmpeg?

I want to make animation using number of images. for this I want to extract images from video. I tried vlc, but it was hanging and didn't get good result. Thus want to use ffmpeg.
4
votes
1answer
6k views

How to provide multiple input to ffmpeg?

I'm using ffmpeg to create time-lapses and it's working great. As input I have images named 001.jpg, 002.jpg, etc. and then with the command ffmpeg -i %3d.jpg -sameq -s 1440x1080 video.mp4 I create ...