Unanswered Questions
2,164 questions with no upvoted or accepted answers
9
votes
1
answer
6k
views
How to produce a zoom animation of a video source with ffmpeg?
I'd like to create a zoom-in animation over numerous frames of a video clip. I've tried a couple of approaches without much luck.
ffmpeg -i test-10s.mp4 -vf "zoompan=z='zoom+0.001'" zoompan-10s.mp4
...
- 511
6
votes
0
answers
2k
views
Merge Insta360 INSV files into 360 video with ffmpeg 360vr filter
Insta produces 2 video files, from back and front camera. They have .INSV extenstion, but they are acutally mp4 video files. That's how they look:
And expected result is 360 panorama video:
Can I use ...
- 2,419
6
votes
0
answers
2k
views
Normalizing audio output loudness (LKFS/LUFS) in DaVinci Resolve 16
DaVinci Resolve 16 adds a great feature that allows applying "Normalize audio levels" on a clip using the ITU BS.1770 or EBU R128 standards, to a target level of -23 LKFS/LUFS, or similar.
However, ...
- 161
6
votes
1
answer
2k
views
Largest input image size when encoding a video?
I got a bunch of really large 16 bit videos, approaching 65535×65535 pixels in size. These are essentially high quality timelapse panoramas. I want to convert them to a 7680×4320 movie (8K UHD, 8 bit)....
CommunityBot
- 1
6
votes
1
answer
1k
views
Making a Digital clock with a specific time for Sony Vegas Platinum 12
I'm using Vegas Platinum 12 and I want to create a time code in a video. But here is the catch. I want to start the clock at a specific time and have the count start at that time, i.e 05:21:34 or 21:...
CommunityBot
- 1
5
votes
0
answers
226
views
Optimized Parameters of `FFMPEG` for Screen Recording
Windows has a great codec for screen recording called Windows Media Video Screen.
It generates artifacts free videos which are highly compressed (small size).
I was wondering, what would be the ...
- 151
5
votes
1
answer
2k
views
Extract the frame (in image format) at exactly every minute (or second) from a video (by ffmpeg)
Motivation: I would like to seek the frame, then take high quality and exact time screenshots (images) from a video.
The video is length is 00:48:43.71 and 23.98 fps (we can think it is 24 fps, isn't ...
CommunityBot
- 1
5
votes
3
answers
2k
views
Can I record directly to a computer with the HC-V250?
I'm considering purchase of the Panasonic HC-V250, but my primary use case is recording directly to a folder on my computer. (I do a lot of post-production editing, so I need all the files on my ...
CommunityBot
- 1
4
votes
1
answer
6k
views
In FFMPEG's H.265 encoder, which CRF value leads to "visually lossless" results?
I am trying to shrink some videos from 1920x1080 to 1280x720 and to achieve a reasonable compromise between video quality and file size. I have decided to give FFMPEG's H.265 encoder a try, and now ...
CommunityBot
- 1
4
votes
0
answers
2k
views
How can I change the sample rate of an audio file, without re-encoding?
I have a lossy AAC audio file. I would like it to be slightly faster, and slightly higher pitched. I would like to avoid loosing any audio quality, such as by re-encoding the stream.
I am well aware ...
- 171
4
votes
0
answers
9k
views
moov atom not found
I downloaded this video using youtube-dl's HLS downloader. The video was being HLS streamed using AES-128. Even though I could view it perfectly fine when it was being streamed in the browser, VLC ...
- 65
4
votes
1
answer
272
views
Is there a NLE that supports Variable frame rate?
Now before you quickly jump in and say:
Premier got an update...
Use handbrake...
What I'm asking none of the big players seem to support.
Rendering a video that's frame rate changes through the ...
CommunityBot
- 1
4
votes
1
answer
108
views
Camera Is Shaking Slowly After Changing Its Position
In Unity 3D I have a series of camera movements, but some don't successfully complete. Instead of the camera coming to rest, it ends up vibrating around the target location.
I have the video of my ...
CommunityBot
- 1
4
votes
2
answers
325
views
Free software for batch basic editing and down-sampling
I have a bunch of TV shows in HD that I want to down-sample to SD and at the same time strip out the titles and credits.
Handbrake has great encoding and can handle batches, but I can't find a way to ...
CommunityBot
- 1
4
votes
2
answers
21k
views
Blending Mode Options Missing After Effects
I'm trying to change my blending mode on After Effects CC 2015, but I have no options on certain layers. Only 2 of my layers have options to change the blending mode. How do I change it so all of my ...
CommunityBot
- 1