Questions tagged [video-processing]
Video processing deals mostly with filtering video frames. Most common filters are noise removal, contrast and color modifications. For questions related to trimming and modifying videos use [video-editing], and [video-encoding] for questions related to editing videos into any format.
video-processing
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How to classify what specific actions an object performs in a video. (not using only a frame, using set of frames) [closed]
I want to create an artificial intelligence model that determines the outcome of object behavior by looking at the collections of frames, rather than determining whether the golf ball entered or went ...
- 1
0
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1
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42
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Using scenedetect to spot subtle cut edits in a video? [closed]
I'm trying to use the Scenedetect Python package to detect subtle cuts in a video. For example, I'm looking at this video:
https://www.youtube.com/watch?v=fNb_-Tmxq8Q
I have downloaded the video and ...
- 1,577
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How to merge multiple videos end-to-end with yt-dlp or ffmpeg [closed]
We want to download a bunch of small sections of videos then stitch them all together into one big video. How would we go about this? Is there a way to bulk-stitch together videos from a particular ...
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25
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How to add subtitles using FFmpeg-kit?
I'm running a flutter app with Ffmpeg-kit package to burn a subtitle on a video. i have a words list with the timings and map that to generate an srt and ass file. but when executing this tho it didn'...
- 1,115
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45
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How to send large data to the renderer process with low latency in electron?
I'm working on a video-related project where I've disabled nodeIntegration and enabled contextIsolation for security reasons. My task involves processing business logic in the utility process and then ...
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32
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How to add a subtitle to a video using ffmpeg in Flutter?
I'm using flutter_ffmpeg_kit_full package to add subtitles to my video. First I loop through all words and create an srt file and stored it in temp folder:
Future<String> _createSrtFile() async ...
- 1,115
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30
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in Node.js how to dynamically crop/trim mp4 video file from AWS S3 and return it via streaming to HTML Video player
const res = await pipeline(
initiateObjectStream(videoKey, start, end),
response,
);
I have the functionality of a webinar platform. It has a recorded video that needs to be ...
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40
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How to detect if a video is progressive or interlaced?
I'm writing some Python 3 code to analyze uploaded videos, but I'm unsure how to determine if the video is progressive or interlaced. It's probably somewhere in one of the cv2.CAP_PROP_.... properties,...
- 11
0
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1
answer
54
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How to create and manipulate MP4 video frames using only native Lua?
Question:
I'm working on a project where I need to create an MP4 video and control its frames entirely using Lua, without relying on any external APIs. The goal is to both generate and read video ...
0
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0
answers
63
views
Using byte range requests to get frame image from MP4 video
I am trying to make a clone of Youtube and doing it from the tutorial, where the guy is manually creating thumbnail images by using ffmpeg tool to get pictures. That does not sound like an ideal ...
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44
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How do I parse an MPEG TS file in order to acquire the packets in C#
I want to parse split TS MPEG files acquiring the packets' payloads. I am not sure how to accomplish this. What I have tried so far is iterating over the entire file reading 188 bytes and checking the ...
- 137
1
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42
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Python opencv/cv2 video generation - FPS/Frames desync
I have a weird problem related to fps/sync of frames.
Firstly, I have an input .mkv video in 30fps.
cap: cv2.VideoCapture = cv2.VideoCapture(example_video.mkv)
Then I break it into frames and work ...
- 31
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1
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ffmpeg auto scaling problem - Picture width must be an integer multiple of the specified chroma subsampling [closed]
Apparently one of my input files have a wonky aspect ratio and it lands on a "non - integer" auto scaled width. which produces an error message about chroma multiples (naturally)
ffmpeg -i &...
- 1,155
0
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Video steganography - spatial domain
I'm having problems implementing steganographic methods for video. I am trying to implement a simple LSB coder and decoder in YUV components using Hamming code (7,4) for error correction. My code can ...
- 1
1
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Video formats that support writing in a rolling fashion?
Are there any video formats out there that support writing in a rolling fashion? e.g. if I have a mmap/file that is the size of a 3 seconds video (1920x1080) at 30fps, I want to write frames to it ...
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