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Difference between crf and cq settings in ffmpeg

What is the difference between -crf and -cq parameters of ffmpeg? I am trying to compress 1080p h264 videos into 1080p h265 videos with high quality and low size. I have noticed that in some guides ...
jamana's user avatar
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2 votes
1 answer
14 views

How do I align many images of a specific landmark?

Every day, on my commute to school, I took a picture of a tall building in the distance from the same place. Now that the school year's over, I'd like to make a video containing all the photos in ...
Christopher Miller's user avatar
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0 answers
27 views

ffmpeg - set dynamic pts on video

I try to set pts for each frame of the input video. Here is the command I use to slowdown frame 1 and speed up frame 2: ffmpeg -i input.mkv -filter_complex "[0:v]setpts='PTS*2*eq(N,0)+PTS*0.5*eq(...
legeba's user avatar
  • 1
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0 answers
19 views

ffmpeg - Trouble using if statement with overlay

I would like to apply a .png on two frames of my input video but I'm having trouble using an if statement to determine the location of the overlay. Expected: Frame n°7 -> Frame n°7 + overlay.png ...
legeba's user avatar
  • 1
0 votes
2 answers
40 views

ffmpeg input -ss accuracy

As from FFmpeg version 2.1, -ss used as an input option should be frame accurate (when transcoding, not stream-copying). I tried it with different versions of FFmpeg, up to recent ones, and with MPEG-...
templeton's user avatar
1 vote
0 answers
10 views

How can I convert H.264 to NTSC for analog video transmission?

For a UAV project we're using an Nvidia Jetson Nano as our mission computer on a fixed wing for object recognition purposes and we agreed that analog video transmission, widely popular with fpv drones,...
Tuğra TÜRKÜCÜ's user avatar
0 votes
1 answer
21 views

Seeking Tool(s) to Restack Frames from an MP4 Video of a Total Solar Eclipse to Keep the Sun Always Centered

I would like to take a video that I recorded of the 2024 Total Solar Eclipse edit it to keep the center of the Sun in the center of the video. I used a SkyGuider Pro tracking device but was not able ...
osswmi's user avatar
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0 votes
0 answers
22 views

Configuring ffmpeg HLS demuxer buffering strategy

Are there options to configure the buffering strategy of ffmpeg's HLS demuxer in a scenario where I use it to pull a HLS stream as input and I re-stream that? I am looking for options that would allow ...
jabal's user avatar
  • 173
0 votes
0 answers
37 views

How do I slow down audio in ffmpeg by more than half (*NO* tempo correction)

I have video that I want to slow down to 1/4 speed using ffmpeg. Unfortunately, I can't figure out how to get the audio to slow down without any attempt to maintain pitch. Everything I find by ...
Stonecraft's user avatar
0 votes
1 answer
37 views

Add custom Poster Frame to a movie with ffmpeg by combining two commands with a pipe

I can export a frame as .png from, say 1.2 seconds from the beginning of the movie (=1 second and 5 or 6 frames with 25 or 30 fps input): ffmpeg -ss 1.2 -i input.mp4 -frames:v 1 image.png And then ...
wywh's user avatar
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1 answer
10 views

What term is used to refer to audio filters that take two source tracks, one of which mutes the other?

I'm trying to recreate an audio effect that was shown to me in OBS (though this was shown too long ago for me to remember how to do this) in post production, but I simply don't know the actual term ...
Daneolog's user avatar
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0 answers
10 views

What is Pan tool for in AE?

As I see it, Pan in AE simply moves the object (like the Selection Tool). By the way, the Pan Under Cursor Tool and the Pan Camera POI Tool work exactly the same. What does Pan actually do in AE (the ...
Eva's user avatar
  • 109
0 votes
1 answer
18 views

What does Dolly do in AE?

Looks like Dolly works like Scale, just increase the size of the object. So, what really does Dolly?
Eva's user avatar
  • 109
0 votes
1 answer
15 views

What's the difference between different kinds of Orbits in AE?

There are 3 kinds of Orbits as I see (Orbit Around Cursor Tool, Orbit Around Scene Tool, and Orbit Around Camera POI), but visually they all work the same. I see no difference between these three ...
Eva's user avatar
  • 109
0 votes
1 answer
16 views

How do I make a numbered list in adobe after effects?

I need to make an animation with a numbered list. So that the squares with the text "Task 1, task 2 ..." move to the left and the first one disappears from the left, and then the next ...
Георгий Мишарин's user avatar
0 votes
0 answers
54 views

FFmpeg RTSP Recording: Video Timestamp Does not Match With Recorded MP4 File Timestamp

I'm currently testing by streaming a 30 fps example flv video using a local Happy-Time RTSP server. This is the flv file i am streaming with RTSP: I recorded the video with below ffmpeg command: ...
lastpeony4's user avatar
0 votes
1 answer
9 views

Why can't I see set menu for switching between orientation and rotation in AE?

In the tutorial video, I saw that there's a Set menu for switching between Orientation and Rotation in AE. Here's a screen. But I don't have it. There is just rotation and no way to turn on ...
Eva's user avatar
  • 109
0 votes
1 answer
7 views

Replacing DVD styler files when changing platforms

I had a DVD Styler file that I created on Windows, with paths starting with C:\Users\username\. I am now on Linux and want to change them to /home/username/. I searched online but couldn't find an ...
emonigma's user avatar
  • 149
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0 answers
24 views

Unable to add text box with background color in ffmpeg

I have a video on which I want to have a text box on top of the video for this purposes I am using ffmpeg's following code `import subprocess def byte(): video = "assets/byte/bite.mp4" ...
nish's user avatar
  • 1
0 votes
1 answer
26 views

What is the Resolution and Frame Rate/Bitrate limitation for VP8 Codec

As per the documentation of VP9 Codec in Wikipedia VP9 has the concept of Profile and Level. Based on these profiles and levels it also has some limitations on Resolution/Frame Rate/ Bitrate as ...
d0tb0t's user avatar
  • 23
0 votes
0 answers
29 views

Subtitle word scaling with ASS file causing line shifting

0 I'm trying to make my subtitles scale one word at a time, but I'm running into an issue with the whole line shifting. Is there a way I can scale a word, and make the other words not move sue to the ...
Barrard's user avatar
  • 101
0 votes
1 answer
38 views

How to properly specify font file for ffmpeg as it's always defaulting to Arial?

When calling ffmpeg it keeps defaulting to Arial-MT / Arial-BoldMT even when specifying a font. How do you correctly specify the fontfile? When specifying any font it will always default back: [...
Jim Jans's user avatar
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0 answers
20 views

Channel mapping in FFmpeg conversion of Dolby 7.1 mlp file to 8 channel wav file

I have a mlp file with 7.1 audio with the following channel mapping (viewed using MediaInfo): L R C LFE Ls Rs Lb Rb I want to convert it to an 8 channel riff64 wave file, so I'm using the following ...
Stan Duncan's user avatar
0 votes
0 answers
16 views

Converting Sony x.v.Color / xvYCC video into format supported by Apple devices

My Sony camera is producing video in 8 bits/channel H.264 with a color space that Get Info in macOS Finder doesn't have a textual name for but just lists as (1-11-1). ffprobe says yuv420p(tv, bt709/...
hsivonen's user avatar
  • 101
0 votes
0 answers
20 views

FFMPEG drawText with fontSize scale "bounce" animation

I'm trying to add a "bounce" animation on a section of text from a known startTime and endTime My initial approach has been to split the start and end times into a first half ( scale up ) ...
Barrard's user avatar
  • 101
0 votes
1 answer
15 views

Automatically blending low motion frames to speed up a video

I have a long video clip of driving that I would like to speed up. The video is a mix of driving (where there's a lot of movement in the scene) and waiting at stoplights (where there is almost no ...
xnx's user avatar
  • 1
0 votes
1 answer
19 views

Is Premiere Pro's gaussian blur forensically secure?

I edit a lot of videos with Premiere Pro. I make a lot of tutorials about coding on YouTube, TikTok, Instagram, etc... Some of my tutorials involve a step where I get an API key from a subscription ...
ChristianOConnor's user avatar
1 vote
1 answer
118 views

What exactly do FFmpeg options `-itsoffset` and `-itsscale` do?

If I understand correctly, the answer at Lossless A/V delay with ffmpeg seems to suggest that option -itsoffset leads to additional metadata, called "editlist", being added to the video file....
finefoot's user avatar
  • 141
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0 answers
27 views

Same FFmpeg command produces different Matroska MKV output file checksum

The following exemplary FFmpeg command takes an MP4 file, doesn't do any re-encoding, but simply writes the output to an MKV file: ffmpeg -i input.mp4 -c copy output.mkv If I run the same command ...
finefoot's user avatar
  • 141
0 votes
0 answers
57 views

How to delay beginning of audio without re-encoding?

I have a file containing both video and audio stream. I want to delay the audio by 5 seconds relative to the beginning of the video, without having to do any re-encoding. The command I tried was: ...
finefoot's user avatar
  • 141
1 vote
1 answer
38 views

In which order do `-itsscale` and `-itsoffset` apply in my FFmpeg command?

I want to use both -itsscale and -itsoffset in my FFmpeg command, but couldn't find any information in the docs https://ffmpeg.org/ffmpeg.html or elsewhere, if the order, in which they're mentioned in ...
finefoot's user avatar
  • 141
0 votes
1 answer
23 views

What is this video dithering effect called + how can i achieve this?

I'm going to make a vlog using this effect since I was looking for a LQ, Nokia-ish footage! What is this effect called and can it be achieved via After Effects? Thank you!
dn dn dn's user avatar
0 votes
1 answer
24 views

Blend the brightest pixels of a frame to the next with ffmpeg?

I have googled for days, and I just can't figure out how to use ffmpeg to blend the brightest pixels to the next video frame. And lastly save the last frame as an image. Similar to "evaluate ...
tim's user avatar
  • 103
0 votes
1 answer
36 views

How to keyframe a slider control in After Effects

Lets say i want to animate a number using a slider control and I want the number to be "1" on the first keyframe and on frame number 20 i want it to be "2". Now if I place a ...
Bengi Yardımlı's user avatar
0 votes
1 answer
39 views

ffmpeg: smooth zoompan with no jiggle

I'm trying to apply a smooth zoom effect to my 5-second video using FFmpeg, but I'm encountering a shaky/jittery zoom. Here's the command I'm using: ffmpeg -i island_zoom.mp4 -vf "zoompan=z='min(...
Kataklycm's user avatar
0 votes
1 answer
9 views

How can I clip off / crop out a piece of a .MOV file using a free tool?

I tried using ClipChamp to remove some sections of a video. I dragged the sidebars to the point where I want the video to end, but I see no way to then save this new/improved/shortened version. Is ...
B. Clay Shannon-B. Crow Raven's user avatar
0 votes
0 answers
7 views

AFX: 3D extruded shape layer – add texture or opacity to front?

I have a shape layer, render changed to “cinema 4d”, extrude the layer in 3d space. I can add solid colors to “front, back, side” etc. How can I either add a texture to the front (glass or something), ...
sigug's user avatar
  • 131
0 votes
1 answer
235 views

How to remove text from video

I tried many techniques and ai tools to remove text from my video but I still can't get desired results so can anyone help me *Text is at centre so can't crop it
AP creations's user avatar
0 votes
1 answer
42 views

How to create animated gif from images files?

i tried this command line D:\Captured>ffmpeg -framerate 1/2 -start_number 1 -i "D:/New folder (76)/Image%d.png" -loop -1 D:/test.gif but getting error [image2 @ 00000000026324a0] Could ...
Dubi Duboni's user avatar
0 votes
1 answer
26 views

Missing video codec

I have a Samsung TV which can play video files from an external USB source. Generally this works fine, however recently I've come across some mp4 files which it says it can't play. I was a little ...
Rich M's user avatar
  • 101
0 votes
0 answers
6 views

How to access a video as *apm file in OBS?

I'm an OBS newbie and completely screwed up by mistakenly saving my video output as an *.apm (audio) file. I tried to extract the file from the apm wrapper using GIMP (Mac) and Image Converter Plus (...
Scott Marshall's user avatar
0 votes
0 answers
7 views

Transporting Video Signal Over Optical Fiber

I have stumbled upon an issue while doing an application. In this application there is an existing multimode fiber which is installed. We will be using Sony PXW-Z90 and QuestTel's optical extenders. ...
JohnMoore1000's user avatar
0 votes
0 answers
27 views

Color histogram transfer with ffmpeg

I don't know if this is even possible, and I'm new to this, but I'll try and ask anyway: I have two videos that are largely the same; they are recordings of the same thing. However, in one of them, ...
ppw0's user avatar
  • 101
0 votes
1 answer
63 views

How to create a box shadow effect when overlaying an image on a video using FFmpeg?

I'm working on a video project where I need to overlay an image on a background video. I've managed to achieve the basic overlay using the following FFmpeg command: ffmpeg -i background.mp4 -i ...
Kataklycm's user avatar
0 votes
0 answers
7 views

Vertical edges appear shaky while the camera moves horizontally

I have noticed that in the video the vertical edges of the rock (I mean the rock that is a kind of a monument just behind the subject) seem to jump back and forth while ...
Michał Kołodziejczyk's user avatar
0 votes
0 answers
10 views

What layer adjustments were added to this short film?

Hi everyone, looking for some pointers toward what sort of (colour, light,..) editing was done to create the effect in this video?
vincent's user avatar
0 votes
0 answers
10 views

How to view Audio and Video of an on-going RTMP stream?

I have looked, and may be missing this question if it already has been asked. It is possible to view the video/audio (or audio alone) in a RTMP stream. The workflow goes as follows: Video Encoder ->...
Matthew Day's user avatar
0 votes
0 answers
33 views

How do I change the color format of a video in ffmpeg?

I have upscaled an old DVD to 4K through various samples and appended the files producing the following x265 file within an .mkv container: My TV can't directly play the video, though, usually able ...
bigboss's user avatar
0 votes
0 answers
16 views

Really struggling to record video + sound on PC, can anybody steer me in right direction?

This is what I'm trying to acheive: Record myself playing guitar with 3 microphones. They are USB condenser microphones plugged into my PC One channel for voice in the middle, and 2 channels for right ...
Bruno  Vincent's user avatar
1 vote
1 answer
47 views

Kdenlive project stuck on 25 fps

I have a Kdenlive project that was started with 25 FPS and now I want to switch it to 30 FPS, but no matter what I do, it stays on 25 FPS and produces 25 FPS output files during rendering. The title ...
Gerald Schneider's user avatar

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