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

0
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0answers
17 views

Ethernet camera causing network driver buffer trashing / memory congestion?

We are running a high-res camera on a reserved, single 1Gb Ethernet port, connected to a Windows 10 machine. We let the camera run on Auto-triggering and so it takes and sends images as fast as it can ...
0
votes
0answers
7 views

Architecture for Video Rending using FFMPEG on ECS vs Lambda

I have written an AWS lambda function to use ffmpeg and render a image, and an audio clip into a mp4 video. That works, but I've been running into limitations of Lambda even with max memory and ...
0
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0answers
13 views

How to record and upload a video while streaming?

I have been working on an application which allows users to go live and also save the video to watch later for those who didn't watched it live (same as YouTube does).I just don't know where to ...
0
votes
0answers
19 views

Show all four videos as thumbnails but play them one by one using FFMPEG

I want to show four videos as thumbnails but play them one by one (video1 plays first then video2, etc).I tried thisString[] cmd={"-loop","1","-t","36","-i","/storage/emulated/0/Download/...
0
votes
0answers
15 views

How to fade with cycle FFmpeg?

I'm looking to use FFmpeg to fade multiple segments with black background in the video. For example: fading a black background 3s segment and then showing the video again in 24s and then continue to ...
0
votes
0answers
16 views

Is it possible to output GPU's video through MOBO

I have a Ryzen 5 1600 (which does not have an integrated graphics) and a gtx 1060 6GB installed on an Asrock Pro4 AB350m Motherboard.I was wondering if it is possible to output the GPU's video ...
0
votes
0answers
5 views

VLC: take a snapshot while receiving a stream

I'm not sure I'm using the correct words because I cannot find an answer in the VLC doc. I receive a mmpeg stream with this command:vlc -Idummy udp://@:1234 --sout=file/ps:D:/test.mp4 --run-time ...
0
votes
2answers
21 views

Google Drive won't play my videos after upgrading to windows 10

I finally got around to upgrading to windows 10 on my PCs. But now my videos that I had stored in Google Drive won't play. They're MP4. So then I tried using VLC media player because that was ...
0
votes
1answer
9 views

How can one zoom on one video during a BlueJeans video conference?

When more than 1 participant share their video in a BlueJeans video conference, how can one zoom on one video?In the following screenshot, 2 participants (in addition to me) are sharing their videos:...
1
vote
0answers
37 views

Mplayer's synchronization playback not working for more than two videos locally

I'm using Mplayer to playback four (security) videos in sync locally. For the first video, I'm running: mplayer -udp-master -udp-ip 192.168.0.255 1_01_R_072018150000.aviFor each of the ...
0
votes
0answers
18 views

Convert video file using format from another file

To eliminate XY problem, here is what's my situation. I have source YouTube videos in MP4 container. I create voiceovers for them using Sony Vegas on Windows machine and then export them as WAV file, ...
0
votes
0answers
17 views

FFMPEG copy hls high cpu usage

I have a set of batch scripts (Windows 10) to create an "instant replay" for some (11) HLS streams using FFMPEG. When everything is working each instance uses less than 1% CPU. The problem I have is ...
0
votes
0answers
14 views

Encoding Google's recommended settings with ffmpeg [duplicate]

I just read the Recommended upload encoding settings article from the official Google support. I think those are the best settings for encoding my YouTube videos.Can you help me find out how to ...
0
votes
1answer
9 views

How to use ffmpeg to add multiple audio files to the video at a specific time?

I have an exampleffmpeg -i zs_712922_CT.mp4 -itsoffset 10 -i ct.m4a -map 0:0 -map 1:0 -c:v copy -preset ultrafast -y out1.mp4 (I don't know why this dropped the video, leaving only the audio.)to...
66
votes
3answers
11k views

How do ultra-high-frame-rate cameras write so fast?

Recording at 1080p and 100,000 FPS for 1 second in the ProRes 422 codec uses up 73.2 gigabytes of storage. (SOURCE)How do ultra-high-speed cameras write to SD cards at such quick speeds, like 580.56 ...
-2
votes
1answer
37 views

How to Measure Total Duration of Video Files in a Directory?

Let's say I have a directory with 5 video files in it. How can I measure the total duration of all video files in this directory from terminal. Also, I want to be able to do this recursively to any ...
2
votes
0answers
28 views

How can a video File (.MOV) play perfectly in VLC and other players but not open in Premiere Pro?

A four Gig Quicktime (.MOV) video file (a video taken on an iPhone) plays perfectly on VLC, Windows Media Player and PotPlayer but when imported into Adobe Premiere Pro 5.5 the following error message ...
0
votes
0answers
29 views

How to download Quampus videos? [closed]

Quampus offers a paid online course (video lectures) at this link:http://quampus.com/srvinfo.aspx?bcode=A28VFB3I am considering enrolling for the course, but I live in a place which does not have ...
0
votes
1answer
37 views

How to play Watermark video in order manner using FFMPEG

i want to play watermark video one by one in output video using ffmpeg.Below command set 4 video as watermark on image and create output video but watermark video play parallel.String[] cmd={"-i","/...
0
votes
0answers
10 views

FFMPEG command error for scene detection: Output file is empty

I'm trying to detect scenes in a given video and after playing around with scenecut thresholds, store the first frame of each scene as an image.I'm using the following command:ffmpeg -i input.mp4 ...
3
votes
1answer
30 views

Web video does not play in any browser on Windows 10 system wide

I turned on my computer today and I found that I couldn't play a YouTube video. The page would load and everything looked normal, but the video was in a constantly-buffering state, paused on the first ...
0
votes
0answers
13 views

I cant encode with HEVC reference software

I'm trying to encode yuv video(1080p , Bit depth:8 bit ,Frame Rate: 120 fps (progressive) )im using HM-16.18+SCM-8.7 , this is my code in f.cfg file : InputFile : ...
0
votes
1answer
38 views

ffmpeg becomes super slow when using duration instead of -r

What I'm doing:I'm still working on my slideshow script. Meaning, I use ffmpeg's concat demuxer (files.txt) to provide ffmpeg with a bunch of .jpg files for a slideshow.In the past I wanted all ...
0
votes
0answers
24 views

Is playing 4K video on a 1080p monitor significantly more resource-intensive than using a native 4K screen?

I have a relatively powerful PC with Nvidia GeForce GTX 780 Ti and Intel Core i7-4770K (3.50GHz), but the most widely-used media players VLC (3.0.3) and MPC-HC/MPC-BE are completely incapable of ...
0
votes
0answers
25 views

FFmpeg scene detection and scenecut

This is a follow-up question from my previous question posted HERE. So basically using FFmpeg, I'm trying to detect scenes after choosing a good scenecut threshold, and grab a single representative ...
0
votes
1answer
63 views

How to use ffmpeg to add 3D metadata to a SBS Full Frame video without reencoding?

Ok so, I've been searching around for how to do this, but I've had no luck.I have an SBS Full Frame 3D MP4 that is 648x720p per eye (1296x720p "raw" resolution). I want to use ffmpeg to add metadata ...
0
votes
0answers
10 views

Win 10, how can I play a playlist of videos in fast forward with the least audio distortion possible?

I'd like to review some programming tutorials but watching them back at 1x speed causes me to lose focus and get bored quickly. I've downloaded the videos to my computer in .mp4 format. What's the ...
0
votes
2answers
87 views

Use FFmpeg to split video into multiple scenes

I am trying to use FFmpeg for splitting a video into multiple supposedly single-scene sub-videos using the scenecut feature and threshold. I found the following command on SE: ffmpeg -i myVideo.mp4 -...
0
votes
0answers
9 views

How to use Concat file list with filter complex

On my page I am successfully using ffmpeg to create videos from a dynamic text file that holds a list of paths to my images.ffmpeg concat version 1.0file 'path/to/file1.jpg'file 'path/...
0
votes
0answers
27 views

How to play video one by one using FFmpeg? [duplicate]

I want to add 4 video as watermark on images and create output video, but added 4 video play simultaneously.I want to play video one by one in output video.cmd={"-i","/storage/emulated/0/Download/...
1
vote
1answer
37 views

Is it possible to burn a filename watermark in the corner of a concatenated image slideshow and have it change for each image?

What I want to do: I have a folder with a great bunch of images. Using these files I want to create a slideshow video, while I want the filename of each of the original images burned into the bottom ...
0
votes
1answer
9 views

How do you autonumber videos in playlists downloaded from youtube with Jdownloader 2

I have a large number of lectures and videos from playlists that only make sense if you play them in order and I can't number each of a 1000 10 minute videos. How can I prepend the number in ...
0
votes
1answer
41 views

Win7 64bit Ultimate, occasional video crashes

I have occasional video crashes.My Video will go black but retains sound.Sometimes I get alarm or video freezes and the occasional BSOD.I Ran Driver Verifier to try to figure out if it's a driver ...
1
vote
0answers
23 views

streaming my desktop to youtube using ffmpeg

There are tutorials out there on how to stream to youtube using ffmpeg, and I have that part of the code done.However, I do not know how to stream the desktop in ffmpeg. The tutorials online only ...
27
votes
5answers
8k views

What is the difference between rendering video on a high-end processor and a low-end processor?

I am doing video rendering these days and one thing I am totally confused about is if someone uses a cheap laptop for rendering videos.Does video rendered on a high-end i7 laptop look better than ...
0
votes
1answer
47 views

Use ffmpeg for thumbnail selections

This is a follow-up question from HERE. I want to sample k frames out of the n number of frames in a given video using FFMpeg and its thumbnail filter. There is a post here providing some insights how ...
0
votes
0answers
35 views

height not divisible by 2 (176x99)

I am trying to convert a .avi file into a .mp4 one using FFMPEG using the libx264 codec.This is the command I am running:ffmpeg -i filename.avi -c:v libx264 -crf 19 -strict experimental ...
0
votes
0answers
33 views

ffmpeg create gif for multiple videos in a folder

I have hundreds of videos in a folder /home/videos/ and I would like to create a gif for each video.The gif should be comprised of 10 different screenshots across the videos length. So for example ...
1
vote
1answer
24 views

Windows cmd.exe - How to prevent overwriting of output files while ffmpeg recursively processes a directory?

I'm trying to have ffmpeg iterate through a folder recursively and pull stills from multiple different video clips.If I run:for /r "W:\Exports\1 - Dailies\" %f in (*.mov) do ffmpeg -i "%f" -vf fps=...
2
votes
1answer
44 views

How can I convert an mp4 file to a m2v file using FFMPEG that is compatible with Windows Media Player?

I tried doing this but Windows says the file isn't playable. Playing it in VLC does work.ffmpeg -i in.mp4 -f mpeg -vcodec mpeg2video out.m2v
0
votes
1answer
46 views

How can I overlay PNG image sequence but start at particular frame using FFmpeg?

I've tried a million things here. This overlays the PNG at the right time, but the sequence itself doesn't start then, it is appearing in its finished state.ffmpeg -i C:\projects\src\assets\video\...
0
votes
1answer
67 views

Is ffmpeg's ssim not doing what it should be doing?

Just out of curiosity, I checked two versions of a video file that were NOT re-encoded, just re-muxed. I was expecting ssim scores to be 1.0. Instead, I'm seeing scores of <1.0.How to repeat:...
0
votes
2answers
245 views

MP4 corrupted, how to repair?

tank for any suggestion.I recorded 2 video on digital camera. Video are saved in identical codecs and settings.The second video, is corrupted, in some way I can't open with VLC or other players or ...
0
votes
0answers
58 views

x265 MKV videos play back with jumps and stutters on my PC. What do I need to upgrade to make movies run smoothly?

Here is a test sample MKV video I am using and I use and here is another test MKV video I am using. These MKV videos are compressed with x265 codec with a resolution of 2160p.It stutters and jumps ...
1
vote
1answer
72 views

FFMpeg Looping Background video and overlay

I'm trying to overlay two videos. My first input video 20 mins long and my second input 1 minute long background video. I'm overlaying them successfully but when i try to play it after 1 min (when my ...
0
votes
1answer
18 views

How to stop FFMPEG processing when first of two inputs end?

I want to do an SSIM comparison of an encoded clip VS a reference fileI have clips of unknown duration that share the same content as a known good source. These clips always start from the ...
0
votes
2answers
19 views

Explicit timebase with ffmpeg and variable framerates in mp4s

I need to concatenate a number of video files with different framerates to play them with OMXPlayer on a Raspberry PI (the concatenation is also done on the PI).Both the originals and the ...
1
vote
1answer
84 views

encoding ffmpeg on android with filter is slow

I am using ffmpeg on android to crop, compress, resize video.This all works fine in terms of speed.But when I try adding filters, e.g. colorchannelmixer=.3:.4:.3:0:.3:.4:.3:0:.3:.4:.3 for ...
-1
votes
0answers
44 views

Hard-code subtitle to videos on mac Os

Hello I was using windows before and I had some commands so I was able to hard-code videos using ffmpeg. And now with the same commands, I can't hard-code videos on my mac using my mac terminal....
2
votes
0answers
17 views

ffmpeg surpressing video length even though im not

So I run script which creates screenshots of various videos and save them in given folders. Script is checking how long is video and saves few random frames from within that range. For some videos ...

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