All Questions
9,056
questions
0
votes
1
answer
7
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
0
votes
0
answers
5
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 ...
- 1,606
0
votes
0
answers
10
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
0
votes
0
answers
5
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 ...
0
votes
0
answers
22
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
0
votes
0
answers
14
views
+100
'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
24
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
9
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
0
votes
1
answer
41
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
0
votes
0
answers
8
views
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
0
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
0
votes
0
answers
14
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
0
answers
18
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
0
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
0
votes
0
answers
22
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
24
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
0
votes
0
answers
11
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
0
votes
0
answers
16
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
0
votes
0
answers
6
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
0
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 ....
0
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
0
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
14
views
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
0
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
0
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
0
votes
0
answers
20
views
Raw audio format efficiently compressing exact silence
Is there any standardized format for raw audio which very efficiently compresses silence (e.g. decided by a parametrizable energy threshold)? I think this could be solved by some sort of custom RLE-...
- 123
0
votes
0
answers
7
views
How to add multiple markers easily in Premiere Pro?
I am making an almost slide show video clip in Premiere pro 2022.
Some part of the music I am using contains regular (I think) notes with mathematical sequence.
For example the music beats patern are ...
- 101
0
votes
0
answers
15
views
Why does my After Effects Comp jump in Premiere Pro Preview
I have an After Effects composition that I imported into Premiere Pro. It has the same resolution and frame rate as my Premiere Pro project, and I can import it without any issues. However, when I ...
- 1
0
votes
0
answers
12
views
Strange effects in streaming with Facebook live
I'm streaming some songs with a video in Facebook live using OBS Studio and VLC player. In some particular songs, I get the strange effect that the video speeds up. I could understand that the video ...
- 113
0
votes
0
answers
14
views
.ts included stream links gets stop after some time in exoplayer
0
I have a link that streams. When I use the link for an IPTV player like Televizo, this plays for an unlimited of time, but when I use this link to my app Exoplayer or my computer's VLC player, this ...
- 1
0
votes
0
answers
48
views
ffmpeg - best way to zoom in/out an overlay image by its center without jerky movements
I am trying to use ffmpeg to zoom in & out an image with its center as origin & overlay the animation over a background image.
Details: The background image is a 300x250 jpeg file, the button ...
- 113
0
votes
0
answers
19
views
Easy way of extanding last frame in kdenlive?
Anyone knows a method to extend last frame of clip in kdenlive?
I am aware of the "export frame to project" but if you update the clip, you will have redo this part.
- 101
0
votes
0
answers
14
views
How to turn-off Anti-aliasing when convert video into gif file with ffmpeg
I want to know how can i turn off Anti-aliasing when i convert video into gif file with ffmpeg, Actually i want ouput in 100% pure aliased gif animation. like this sample image
Here i try this but ...
- 1
0
votes
0
answers
14
views
Old Bell & Howell Filmo 70HR 16mm camera
I have two B&H Filmo 70HR 16mm film cameras that can use 400’ film magazines with the aid of motors to drive the take-up reel. One has a 24v motor and the other has a 110v motor. Both motors use 3 ...
- 1
0
votes
0
answers
18
views
Why does setting the bitrate with ffmpeg has no affect on the filesize?
I am trying to lower the bitrate of a video using ffmpeg to 1000 bits/s and 500 bits/s using the commands
ffmpeg -i __temp__.mp4 -vf "scale=-2:360" -b:v 1000 out_1000.ts
ffmpeg -i __temp__....
- 101
0
votes
0
answers
16
views
verify lossless in H.264
i've transcoded an interlaced JPEG2000 video file to H.264 using ffmpeg. following the guidelines, i constructed the following command line:
ffmpeg -hide_banner -i $input \
-vf tinterlace=0 \
...
- 101
0
votes
1
answer
36
views
Replicate the behavior of -r option before applying filters
When converting the framerate of a video, ffmpeg offers multiple options
one options is -r:
ffmpeg -i myvideo.mp4 -r 10 my10fpsvideo.mp4
another option is using filters:
ffmpeg -i myvideo.mp4 -...
- 101
0
votes
1
answer
63
views
ffmpeg - overlay position at the end of the video is wrong
I am trying to move a shape (an image) over a background image to each corner. Here is the video example I generated with ffmpeg.
As you can see from the example, at the end of the video the shape is ...
- 113
0
votes
0
answers
12
views
Can I Use Macros When Recording Audio in Adobe Premiere?
Every time I record audio on the timeline in Adobe Premiere, I have to do three things for all recordings:
Add the right hand side audio channel as my microphone is mono.
Increase the DB to 4.4.
Add ...
- 101
0
votes
0
answers
13
views
How can I choose a specific track in Adobe Premier Editor panel?
There are several tracks in the Editor panel. I would like to choose one of the tracks and delete it. Is there any method such as a shortcut or button that I can use to do it easily?
How can I choose ...
1
vote
1
answer
31
views
Is there a way to split up an AVCHD file into smaller files (Sony HXR-NX5R)
From an all day event shoot, I have a 13 hour file recorded on a Sony HXR-NX5R camera. Catalyst Browse transferred the 160GB file OK, Premiere imported the file (but choked for quite a while doing so),...
- 687
0
votes
0
answers
7
views
Premiere control with mouse wheel
In Premiere Pro, there are many places where mouse pointer gets a two-sided arrow:
It took me quite a while to figure out I have to click-and-hold while panning to adjust these "sliders".
...
- 111
0
votes
0
answers
30
views
variable timestamps for audio samples in MP4
Consider the following ffprobe output for a MP4 file. This is an extraction of first 10 frames in the audio stream and its metadata. The audio stream has a sampling rate of 48000, and is encoded with ...
- 141
0
votes
0
answers
20
views
Convert 540p to 1080px720p without using AI?
Is it possible to Convert 540p to 1080px720p without using AI?
I'm editing different movies into my productions but the video resolution is not uniform.
I use StreamFab to download the videos at ...
- 11
0
votes
0
answers
9
views
Best ffmpeg compression settings for fast seeking of long 4 hour clip
I've got a low-resolution 4 hour clip, and need to do a lot of seeking in the video to write down when stuff happens.
Do you have any suggestions for what format/settings would be the most "seek-...
- 113
0
votes
0
answers
9
views
Time-lapse vs Drone Video Quality on Linkedin
When we post video on Linkedin, Time-lapase looks bad vs Drone video looks Crisp and clean. Video link and screenshot below.
See below
Time-lapse footage:
Drone Footage
Here is the Link to Original ...
