All Questions
8,999
questions
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54
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Video converted with FFMPEG cannot be played
I am developing a function that converts RTSP files to HLS and displays them in a web browser (chrome). Development is node.js, I am using ffmpeg.
The part that is converted to HLS and displayed on ...
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12
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What video editor should I use for this or what style of video is this called?
I really like this explainer video put together on Bukowskis:
It's simple with a lot of still images and minimal animations.
Does anyone know what video editing ...
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votes
0
answers
20
views
How to mount Sony FR7 to Wall
I'm trying to mount this PTZ camera to the side of the wall not the ceiling or on a pole.
On the side of the wall is there a good way of doing this?
I've looked at Sony's Documentation and they only ...
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1
vote
1
answer
41
views
How to get the number of options in a drop-down list (After Effects script)?
I'm trying to create a script that randomly selects an option from a drop-down list.
For that I use a randomly generated number as the index of the set value. The issue is that if it tries to select ...
1
vote
1
answer
16
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dvdauthor ERR: Can only have 128 commands for pre, post, and cell commands
I tried to make a DVD-Video of my favorite songs with a menu.
<vmgm>
<menus>
<video format="pal" aspect="4:3"/>
<audio lang="DE"/>
<...
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0
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0
answers
13
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I found this old video on my computer and there's some sort of corruption? Please tell me what this is
The video format is .avi. It was recorded with an unregistered copy of Hypercam 1. I don't know exactly what kind of effect this is.
Video
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0
answers
94
views
FFMPEG Encoding to prores 4444 with alpha doesn't retain original alpha
I'm trying to convert an rgba png to prores 4444 with an alpha. When I run the following command it will create prores file with an alpha. But, the alpha is full white, it doesn't retain the values I ...
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202
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ffmpeg Output file #0 does not contain any stream during the extraction of audio from a .webm file
my objective is to extract frames and corresponding audio from a .webm file. Then crop the faces shown in those frames and resize the cropped images to 256x256 and concatenate them back to a video ...
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1
answer
108
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Using ffmpeg nvidia/cuda overlay processing results in green output - how to get the correct colours?
Background: I'm trying to overlay a full frame image on top of an MP4, in ffmpeg, using as much hardware-assistance as possible. The inputs to ffmpeg are:
a stream from an MP4 file - with 1 audio and ...
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5
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Annotating files with ffmpeg and concatenating problem
I annotate a bunch of files with:
ffmpeg -i migrant.mp4 -vf "drawtext=text='Migrant':fontcolor=white:x=100:y=100:font=Arial:fontsize=50" -codec:a copy migrant_test.mp4
I then concatenate ...
- 101
0
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1
answer
66
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FFmpeg is encoding at a lower bitrate than what is specified
I'm fairly new to FFmpeg, I'm using this command: ffmpeg -i "C:\FFmpeg\Handbrake\Trackmania\Trackmania.mp4" -c:v libx264 -preset veryslow -b:v 10000 -fps_mode passthrough "C:\FFmpeg\...
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votes
1
answer
20
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Lightstreaks on Video Footage
I'm trying to make this effect for a car video, you can imagine the camera movement for this kind of stuff.
I was going to try this technique which is simply a 3D shape layer in After Effects with a ...
- 143
1
vote
1
answer
617
views
FFmpeg with m3u8 playlist: Invalid data found when processing input
I get the following error when I try to open a playlist with FFmpeg:
ffmpeg version 2023-03-05-git-912ac82a3c-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with ...
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1
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1
answer
9
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I want to edit a video just like the one in this example but have no clue what to even look up to learn it
I want to edit a video with this same type of "endless paper" background. On screen graphics, and zooms.
I was trying by importing a large paper photo, then adding all of my on screen ...
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8
views
Increasing Expression by Comp Index when access CSV File
I'm just wondering if someone can help me out. I'm getting error when trying to increase the location of the data in CSV by the composition index.
Here's code I am using
\\
var compIndex = parseInt(...
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58
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Video (generated with FFMPEG) scrambled in Chrome after upload to YouTube
I am generating short videos from screenshots (e.g. 900 screenshots for a 30 seconds clip) with ffmpeg.
It works great and I can play the videos in different video players on Windows without a problem....
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15
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FFmpeg. Processing new jpeg files that appear
I have a directory where new files in jpeg format are periodically emerge.
How can these files be processed one by one,
waiting for the next one and convert them to a mp4 file.
I tried like this
...
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0
answers
65
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ffmpeg or mplex DVD mpg or vob file with m2v and wav or lpcm
I would like to burn my favorite audios to a DVD with menus and hard links to vob files from the XTRA directory on the DVD. So I will have DVD-Video and MPEG files with artist names on the same DVD. I ...
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1
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10
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Extract and consolidate specific parts of a clip
I've been looking for a way to Extract and consolidate specific parts of a clip in the timeline.
I've thought of marking the parts of the clip that I want, make a subclip out of it, lift that specific ...
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16
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Project: Use smartphone as webcam, add AR-filters to videostream, send output as feed to smartphone for further usage within mobile app
If the title is leaving you with a big "!!?!" then... my bad... I am lacking the needed vocabulary I guess. lol PLUS... I don't know if what I am trying is even feasible.
Here's what I want:
...
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26
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Use of FFMPEG (compiled exe, not linked DLLs) on a commercial closed-source Windows program
I would like to use FFMPEG compiled .exe files in my commercial Windows OS application and I am wondering if it can be used commercially mainly if:
a) The compiled ffmpeg.exe is distributed with the ...
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1
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1
answer
21
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2 video files, one has the audio with 15FPS, the other has the video with 5FPS, audio is out of sync
I'm trying to sync the audio and video of 2 different files, one is a 15 FPS webcam stream with audio and the other is a screen share with 5 FPS. This is an educational setting.
I'm trying to do the ...
- 13
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0
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100
views
How to test ffmpeg for streaming encoding at 1x?
I would like to test ffmpeg for encoding a stream on my VM to see how much CPU % it uses, and how many cores. I don't have streams going, but I plan to use webcams to provide the stream in the future. ...
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answers
24
views
Why is my rendered video output larger than imported files?
I have imported multiple video files (roughly 3h30min / roughly 11GB). I have stripped out the Audio and reduced my total cuts to roughly 2m12sec. I have tried multiple render video output formats, ...
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1
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0
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33
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What type of issues does Sony FR7 have with NDI?
What issues does Sony have, if any, with the NDI protocol?
Is the image as good if it was recorded in camera?
I appreciate any help you can provide.
Here is a list of the items Im researching
Sony ...
- 11
1
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0
answers
33
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Less color and detail visible when videos are played in VLC (Linux, NVIDIA)
When I watch videos from my GoPro, the colors look much better in Dragonplayer (stock player with KDE). This is the case for both x264 videos:
With HEVC there is also a difference, although I think ...
- 111
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25
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ffmpeg: possible to encode zerolatency stream with only P frames?
I'm experimenting with extracting motion vectors from h.264 videos for some vision task and I was wondering whether it's possible with ffmpeg to encode a h.264 stream so that it consists only of P-...
1
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1
answer
16
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How to make a "Video Wall"
I'm currently trying to make a "video wall". It should look something like this.
I have Final Cut Pro but the process was more tedious than I'd originally anticipated.
Is there a better, ...
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0
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48
views
FFprobe not showing frames data
As a beginner I don't know much about ffprobe and other video editing command line tools. Please guide me here.
I am trying to download a video with yt-dlp and trim it to the nearest key-frame of my ...
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0
answers
117
views
FFmpeg recover_mp4 help
ive been using ffmpeg and recover mp4 to try and restore a dashcam video from a car accident. im a beginner using this method/ software and im running into this issue. not sure how to "increase ...
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0
answers
14
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ffMpeg recording one input into 2 files with one encoder process
need some help after trying days on this. I'm able to process one input to two outputs with two encodings:
ffmpeg -f dshow -i video="Integrated Camera" -c:v mpeg2video -b:v 50000k -vf "...
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0
answers
42
views
ffmpeg - pause video after 1 second
How can I use ffmpeg to create a video such that it pauses after 1 second but retains the full duration of the video? i.e. I am not looking to trim it. For example
ffmpeg -i "input.mp4" ...
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10
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Burn metadata onto a picture
I have a lot of JPEG photos taken by GoPro. All the photos have metadata on them, but I want that metadata to be displayed on the picture. I can view metadata in the properties of photo, but I want to ...
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0
answers
10
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Why the DSLR camera audio was set at -12 db?
From the online youtube videos
It was mentioned that the professional audio equipment was usually set at -18 dbfs while the home ...
0
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0
answers
77
views
Why would ffmpeg run slower on a GPU than a CPU when doing mp4 compression?
I'm running it on modern equipment with latest drivers. I use it to compress video files, like so:
ffmpeg -i 20230502_200913.mp4 -vcodec libx265 -crf 28 -vf "scale=trunc(iw/10)*2:trunc(ih/10)*2&...
- 101
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0
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7
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What output to feed
My question offloading video to composite video for Video 8 (in shot)to view on plane, if my hdmi > SD converter output is 576i50 should I set my source output as high as poss (2160p60 or 50) or ...
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41
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When multiple windows are captured simultaniously can OBS capture only cursor in currently active window?
I am making a small video for some of my colleagues where I show them how CI/CD with GitLab and Kubernetes works (software development stuff). For that purpose I would like too keep 4 windows visible ...
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1
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1
answer
35
views
Is splitting a video for export a good technique?
Currently, I'm making a video that I intend to upload to YouTube. I used After Effects and Premiere Pro for this. Since it's a video that's almost 2 hours long, the export takes me about 16 hours ...
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0
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39
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Reuse clip of a sequence as a new sequence in Kdenlive?
I have the following use case: I have two videos from different sources (two different cameras) observing the same event. These two obviously do not start at the same absolute time point, so one of ...
- 121
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1
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114
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Using ffmpeg audio filter loop instead of stream_loop as stream_loop adds a delay
I want to loop an audio file infinitely. The -stream_loop -1 option adds a small pause / jerk between the loops, as also mentioned in this question with no solution.
The same question mentions that ...
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80
views
Place logo + change its opacity and scale + add text at random position
I have 3 complex filters and can't figure how do i make it in one command to work:
Random text position
ffmpeg -i video.mp4 -vf drawtext=\"fontsize=40:fontfile=FreeSerif.ttf:fontcolor={color}:...
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answers
33
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extracting/exporting images from a video at every scenechange
How can I extract images from a video at each scene change (i.e. the 1st image from each new scene in a video) ?
FFmpeg is said to be able to detect scene changes but I don't know how to adapt the ...
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191
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FFMPEG RTMP stream Non-monotonous DTS in output stream 0:1
Running into a wee issue here.
I'm trying to use an rtmp stream as an input and then outputting it to twitch.
ffmpeg -re -i rtmp://localhost:1935/live/ -f flv -c:v libx264 -c:a aac rtmp://mad01....
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0
answers
37
views
Kdenlive rendered my MP4 as a white screen, no sound
Kdenlive users. I am brand new to editing... I'm using version 22.12.3. I had a 17 minute MP4 that I'd edited down to 11 minutes + added a jpg at beginning and end... Rendered, and the new MP4 is ...
0
votes
1
answer
201
views
KDenlive, image sequence, and transparency/alpha/opacity of fades
This is probably the same question as https://www.reddit.com/r/kdenlive/comments/ik44o2/image_sequences_cutting_and_transparency/ ( and probably related to https://kdenlive.org/en/project/compositing-...
- 121
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0
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229
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ffmpeg not adding correct timestamps in recorded files
I am using ffmpeg to record a camera stream using rtsp protocol. Camera stream is being consumed via rtsp-simple-server. I am creating 10 second files by setting output_ts_offset to epoch realtime.
...
2
votes
1
answer
13
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How to make a 4 point path follow an object at either end? (How to make a fake node graph)?
I am trying to simulate a node graph like this where a path with 4 points (start, 2 middle, end) adapts to the movement of an object connected to the start and end:
If you move a node at the link ...
- 121
1
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0
answers
276
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FFMPEG merging videos Non-monotonous DTS in output stream 0:1
When i use this command it in generally works with no issues but I get this warning and the video is super long (should be 20 or 30 seconds and is 24 minutes)
ffmpeg -f concat -safe 0 -i manual.txt -c ...
- 11
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votes
0
answers
81
views
FFmpeg is dropping a lot of frames but I can't see why
I have very little experience with FFmpeg but a process that worked flawlessly on one video (60fps @1920x1080) is dropping frames like crazy on another (58.56fps @1920x1080).
I believe I have my ...
0
votes
1
answer
52
views
change output order of FFprobe
How can I change the output order of FFprobe?
ffprobe -hide_banner -show_streams -show_format space.mkv -of json=c=0 -o output.json creates a json output file with the streams sections first and the ...
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