All Questions
9,072
questions
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12
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Convert video from webm to mp4 using ffmpeg
I have 10 webm videos, each one has the same size ~15mb. When I run following code:
ffmpeg -i video1.webm -f mp4 video1.mp4
9 of them finish in ~10 seconds, but 1 lasts more then 3 minutes. I run ...
- 101
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votes
0
answers
8
views
Cutting and rejoining videos causes audio de-synchronization using ffmpeg
I'm trying to cut a video into pieces and rejoin them using ffmpeg on Windows 11 x64. Here's the details of ffmpeg:
ffmpeg version 2023-11-22-git-0008e1c5d5-full_build-www.gyan.dev Copyright (c) 2000-...
- 101
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votes
1
answer
6
views
ffmpeg Config to Produce H.264 Constrained Baseline Profile
It all begins with Plex and appears to end at ffmpeg as the easiest possible solution. I love ffmpeg! I use Plex running on Linux to stream over home network to a Roku. I've used this for years ...
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answers
17
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The problem with converting ts files to mp4
So I download ts files from h264.m3u8. The files look like this "https://.net/data/3/a/e/6d162b532610fdae/h264_00000005.ts ". I merge them into one common ts file. And I'm trying to get an ...
- 1
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votes
0
answers
7
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Why does my DSLR have a 1 minute recording limit?
I have a Nikon D7500, which I've been using to record some video. I know that most DSLRs have a 30 minute recording limit, and mine started off that way as well. The more I filmed, the more my ...
- 1
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votes
0
answers
5
views
How to align text boxes while keeping layout
I'm pretty new to Premiere Pro, and can't get my text (separate boxes, same layer) to align properly. I made a Photoshop mockup. Say you start with this.
Here is what is happening
Here is what I ...
- 101
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votes
0
answers
3
views
My OBS Studio Mac OS is stuck in 9:16 aspect ratio
I'm running OBS [[[ 30.0.0 (64 bit) ]]]on Mac OS [[[ 14.2 Beta (23C5055b) ]]]
My only options are vertical video. This just happened and I think it's since the beta update.
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answers
7
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efficient way to clip video + audio with out exporting on veed
I am using veed.io to edit some videos, I am syncing video + audio, as the first step, then I have to clip mistake parts and delete them...
I have discovered that is faster to sync them, export that ...
- 111
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votes
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answers
10
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Errors adding multiple Subtitles with FFMPEG
I am trying to soft-encode 3 subtitle files into my film.
I extracted the subtitles from the DVD using ByteCopy
I am using this command to add the files:
ffmpeg -i BloodDiamond.mp4 -i ...
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votes
0
answers
7
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How to update this script to generate HLS video with different resolution streams?
I have the following FFmpeg script:
ffmpeg -i video.mp4 -i video.vtt \
-map 0:v -map 0:a:0 -map 1 \
-s:v:0 1080x1920 -c:v:0 h264 -b:v:0 500K \
-c:a:0 copy -c:a:1 copy -c:a:2 copy -c:s webvtt \
-f ...
- 1
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votes
0
answers
15
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How to stitch two videos side by side using ffmpeg?
I want to create a video that consists of same video encoded at 2 different quality levels, half of each stitched side by side. Basically, like this image, right half of the video is the right half of ...
- 101
0
votes
0
answers
14
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ffmpeg concat demuxer merge two videos, output contain frozen frames per second
SE community
Since yesterday I have been experiencing a problem using ffmpeg concat.
I was merging two videos and I noticed frozen frames over my video where videos are merged. I don't know what am I ...
- 11
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answers
7
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how to make any filter's value that accept integer value be a function of the timestamp in ffmpeg?
For example, i am trying to apply blur effect to video in ffmpeg using gblur filter, i want the blur strength to gradually increase from 0 to 50 in 2 secs starting at 5 secs and fade back from 50 to 0 ...
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answers
5
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How do I export 180º stereoscopic VR footage as "normal" monoscopic video for consumption by normal video players
The title sums up the quest. I am assuming I can do this with Premiere Pro somehow but if I need to use some other method, I'm fine with that as well.
An example of what I imagine I want to do: I ...
- 123
0
votes
1
answer
14
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Current hardware and software for converting family tapes to digital. Most of the existing links are out of date/not manufactured. I have a Mac M3
Current hardware and software for converting family tapes to digital please. Many of the existing links appear out of date/not manufactured. I have a Mac M3.
- 1
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0
answers
34
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How to "quickly" cut and separate video into tracks (Davinci Resolve 18)?
I am brand new to Davinci Resolve, video recording, and editing in general.
I'm running Davinci Resolve Free 18.6.3 on Windows.
(Part of my issue in finding the answer(s) might be in my lack of ...
- 101
0
votes
0
answers
28
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ffmpeg - lossless image rotation
I am trying to add a transparent image (png) (that I would like to rotate - amongst other things...) over another image (jpeg).
Here is the result (left = non rotated, right = rotated):
As you can ...
- 113
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votes
0
answers
17
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ffmpeg: fade-in not rendered when used in conjunction with fade-out
I have a video file I want to fade in and out over a duration of three seconds each.
My code is, run over WSL on WIN 10 pro 22H2:
ffmpeg -i video.mp4 -vf "fade=t=in:st=0:d=3,fade=t=out:st=169....
- 1
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votes
0
answers
6
views
Help me with corrupt video mp42
Hello I have one corrupted video file created with Chinese Camera DV4K_V23.
I created one small sample video from this camera and I uploaded it for someone to help me, to decipher exactly which ...
- 1
0
votes
1
answer
17
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ffmpeg: why 2 video stream?
I'm on ffmpeg 6.
Take a video then:
ffmpeg -hide_banner -ss 00:01:09 -t 20s -i "video.mkv" -map 0:0 -c:v libx265 -crf 25 -filter_complex "setpts=PTS-STARTPTS" "...
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votes
1
answer
21
views
How do i add xfade transition to a batch of videos using ffmpeg?
I'm currently trying to concatenate multiple videos in a folder using FFmpeg. I've successfully applied a xfade transition between two videos using the following command: However, I'm facing two ...
0
votes
1
answer
14
views
How do you extract bitmap subtitles to a standard image format using ffmpeg?
I need to extract bitmap-based subtitles to a standard image format like PNG or BMP. Preserving transparency would be a bonus. I don't need to convert to text, and I don't want a subtitle-specific ...
- 103
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votes
0
answers
7
views
Converting with ffmpeg a bunch of webinars that contains a lot of slides (still images) aside a webcam speaker/lecturer
I screen recorded a lot of webinars that now I have to compress in order to have less space occupied.
The content of this webinars are mostly persons talking like in zoom, few pixels of them in webcam ...
- 1,616
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answers
35
views
How can I combine a screenshot and two video files with ffmpeg?
I have a folder with video files. Some are .mov, some are .mp4. As a first step I am converting the .mov-files into .mp4 with:
while read mov; do
mp4=$(echo "$mov"|sed -e 's|\.mov$|.mp4|i'...
- 101
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votes
0
answers
13
views
ffmpeg able to use cuda, Vulkan and opencl at the time?
I am using ffmpeg with a lot of filters. I am currently using one gpu for using cuda filters like overlay_cuda and the encoding with:
-hwaccel_output_format cuda -hwaccel_device 3 -hwaccel cuda.
I am ...
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0
answers
28
views
How to animate transparent images using Xfade and ffmpeg
I am trying to making a video using 1 background image and 5 transparent images (all the images are in same dimensions 500x500). Where the 5 transparent images animate for 2 seconds (Slideup, WipeDown,...
- 1
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votes
0
answers
22
views
'FFMPEG: moov atom not found' on my dash cam videos
I have several dash cam videos. The first 3 of them are opened through the VLC. Other files - no
When trying to open them ffmpeg:
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the ...
- 1
0
votes
0
answers
8
views
Horizontal Blanking Interval (Idling Time) optimization
I have questions regarding the time slot in-between two frames of video stream, i.e. Horizontal Blanking Interval (let's say HBI in the following), seen as Idling Time sometimes.
Considering a CMOS ...
1
vote
0
answers
26
views
Most efficiant way to create a video with series of images faded in and out with ffmpeg
I am creating a video with audio that consists of 25 images that fade into each other for the duration of an audio file. There is also some text that will appear on the finished video.
What I ...
0
votes
1
answer
10
views
dvdauthor spumux aborted: picture had 256 colors
spumux tmp.xml < tmp.mpg > output.mpg
INFO: Picture tmp.png had 255 colors
INFO: Picture tmp.select.png had 256 colors
spumux: subgen.c:313: findmasterpal: Assertion `s->numpal < 16' ...
- 11
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votes
1
answer
50
views
ffmpeg - Prevent ffmpeg to skip frames
I am trying to move a png image by 10px over a white background during 2s (fps=25), but the transition I got is not smooth.
Here is the command I am using:
ffmpeg -y -vsync passthrough -f lavfi -i ...
- 113
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votes
0
answers
11
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FFMPEG watermark + hls multi stream
i want to convert mp4 video into hls multi resolution (360 , 720) and add watermark image inside the output segments
i did two result but missing the watermark image with the multi scale
//one hls ...
0
votes
1
answer
15
views
Using Lumetri HSL secondary mask to create alpha transparency
How can I use the selection made using the Lumetri HSL Secondary Set Color tool to define alpha transparency. That is to say: how can I use my Lumetri colour selection to create a transparency mask to ...
- 101
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votes
0
answers
8
views
What are the most common formats that allow interchange of timelines, including footage
The origins on this question are quite similar to What are the most common project formats for modern NLE software? almost ten years ago. If you would edit in an NLE, and want to transfer all assets (...
- 19
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votes
0
answers
17
views
Creating a Video from Pano2VR results in corrupted frames
Has anyone been able to use Pano2VR Pro to generate videos of their tours using the Animation Output option? Pano2VR uses ffmpeg to generate video frames.
I have attempted to use this feature numerous ...
0
votes
1
answer
31
views
ffmpeg from 5.1 or 7.1 audio in separate mono streams to stereo
I have a file with 7.1 audio, where each channel is in a separate mono stream. How can I convert all these mono streams to plain stereo?
(The documentation suggests to use the -ac 2 option, but that ...
- 567
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votes
0
answers
13
views
Davinci resolve stops generating subtitles in specific part of timeline
I'm having an issue generating automatic subtitles over a specific portion of my video. it worked just fine scanning the middle to end but it only gets off 2 subtitles in the beginning then stops for ...
- 123
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0
answers
31
views
Concat a video and an audio using ffmpeg, freezing the last video frame, without re-encoding
I'm trying to concat a video (mp4) and an audio (mp4 or aac) - both cut out using -ss and -t from the same mp4 file. I'd like to basically freeze the last frame from the video and then append the ...
- 123
1
vote
1
answer
32
views
First input link main timebase (1/15360) do not match the corresponding second input link xfade timebase (1/90000)
ffmpeg community
I am new to ffmpeg and i am facing this error for more then 2 days. This ffmpeg command:
!ffmpeg -i "{fromPath}" -i "{toPath}" -filter_complex "xfade=...
- 11
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votes
0
answers
12
views
How to play video at correct frame rate?
I have a video recorded with fps 15 and when I reply it with mplayer it is replayed way too fast (it has a timestamp in it so you can see it is at least double as fast as normal speed). Even when I ...
- 101
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votes
0
answers
26
views
How to stack two videos with ffmpeg if they might have different size, format, framerate etc?
I have two videos in different formats, sizes, video quality, framerate etc, but I want to stack them as SIMPLE as possible. Does not need to look good, but in the final video I want to see both ...
- 101
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votes
0
answers
9
views
Create scrolling text on empty background, with sound, for presentation?
I have a sound file with an interview and separate files with a transcription of the interview (one SRT and one text with one sentence per line).
I want to create an animation or video where the ...
- 101
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votes
0
answers
5
views
Adobe premier pro how to replace a new mark in mark out video / audio from the previous one?
I am using Adobe Premiere Pro - 2021 for the first time. I know all the basics of it. But I want to replace an audio/video from a new marked in and out one.
Please see the image below for better ...
- 101
-2
votes
0
answers
19
views
What are some competitive, data-based reasons for someone to change a native .mp4 video to .mkv?
I'm in a highly competitive program at university and I've recently realized that many of my field research videos have been accessed on my school's server and the file format has been changed from ....
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votes
0
answers
5
views
3D Text for mountain peak flyover (Drone shot) not sticking to camera track
I am trying to "pin" a 3D title to a mountain peak while I have a drone shot flyover.
From tutorials I've gotten into the following.
Creating a camera tracker, tracking the scene and solving ...
- 165
1
vote
0
answers
15
views
Is there a way of creating a "natural" highlighter effect through Kdenlive?
On 15:20 of How To Make Vox Style Videos - After Effects Tutorial, YouTuber Mapal uses Turbulent Displace in After Effects to add a more natural look to the highlighter/marker effect typical of Vox ...
- 111
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votes
0
answers
23
views
How to inject video into a live stream?
When you have two or more live streams, and you want the ability to toggle between the two, such as switching to camera 2's feed on the main screen, how do you do that and what do you need to ...
- 101
0
votes
1
answer
15
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ffmpeg make 1s of 240fps video from 4s of 60fps?
How can I use ffmpeg to create 1 second of 240fps from every 4 seconds of 60fps video?
I see only seen questions asking for the opposite.
Background
Our drone is only able to capture 60fps, but if we ...
- 103
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votes
0
answers
3
views
Recommendation request for stereoscopy workflow
I occasionally do video editing in spare time. I've made a few 3D videos, and I seek to improve my workflow. I use Final Cut (I hope to get FCPX answers, but open to others so that it'd be useful to ...
- 138
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votes
0
answers
7
views
Link line endpoints to objects in Apple Motion5
I would like to draw a line between two circles. The endpoints of the line have to be linked each to one circle. When I move one circle the line should automatically expand to keep the connection.
Is ...
- 1