# Image Recording and Transmission

> The image pipeline from sensor readout to codecs and containers, including the latency, bandwidth and quality trade-offs of live transmission.

- Author: Muhammet Ali Köker
- Language: en
- Canonical: https://alikoker.com.tr/en/image-recording-and-transmission
- Translation: https://alikoker.com.tr/goruntu-kaydi-ve-iletisimi
- Published: 2021-07-07T17:35:14+03:00
- Modified: 2026-08-31T22:21:00+03:00
- Verified: 2026-08-31T22:07:00+03:00
- Type: article

Image recording converts sensor output into digital frames, reconstructs colour information, compresses the data and stores it as a file or stream. During transmission, the same data is additionally constrained by bandwidth, network delay and packet loss.

## From sensor to frame

CMOS and CCD sensors convert photons into electrical charge. An analogue-to-digital converter turns that charge into numerical values. Colour filter arrays usually require demosaicing before full-colour pixels are available. Exposure, gain and white balance can alter pixel statistics before application-level processing begins.

## Codec and container

A [codec](/en/wiki/codec) defines how image or video samples are encoded and decoded. A [media container](/en/wiki/media-container) organises one or more video, audio, subtitle and timing streams within a file or transport structure.

Lossless encoding preserves samples exactly but requires more storage. Lossy codecs reduce data volume by discarding selected information. Video codecs also exploit temporal redundancy across frames.

## Live transmission

In live streaming, buffering and packetisation are as important as codec choice. Larger buffers can absorb network variation while increasing end-to-end latency. Long prediction structures improve compression efficiency but can slow recovery after packet loss.

FFmpeg is widely used for media coding and stream operations, while OpenCV is naturally suited to frame-oriented image processing and computer vision. A robust pipeline tracks resolution, frame rate, colour format, codec, timestamps and transformations together.

## Cite This Work

Köker, M. A. (2021). Image Recording and Transmission. alikoker.com.tr. https://alikoker.com.tr/en/image-recording-and-transmission

- BibTeX: https://alikoker.com.tr/en/image-recording-and-transmission.bib
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