Video Format Guide for Professionals

A codec (coder-decoder) defines how video and audio data is compressed and decompressed. A container (also called a wrapper or file format) is the package that holds one or more codec-compressed streams along with metadata. Understanding this distinction is fundamental: the same codec can be stored in different containers, and the same container can hold content compressed with different codecs.

For example, H.264 video with AAC audio can be packaged in an MP4 container, a MOV container, or an MKV container. The video and audio quality is determined by the codec and encoding settings, not the container. The container determines compatibility, metadata capabilities, and feature support like chapter markers or multiple subtitle tracks.

When someone asks "what format is this video?" the answer has two parts: the container (which you can see from the file extension) and the codec (which requires examining the file with a tool like MediaInfo). A ".mov" file could contain ProRes, H.264, DNxHD, or several other codecs. Knowing both is essential for troubleshooting compatibility issues.

For editing, you want codecs that prioritize performance and quality over file size. Apple ProRes is the most widely used editing codec, offering variants from ProRes Proxy (lowest quality, smallest files) through ProRes 4444 XQ (highest quality, largest files). ProRes is natively supported by Final Cut Pro and well supported in Premiere Pro and DaVinci Resolve.

Avid DNxHD (for HD) and DNxHR (for resolutions above HD) are Avid's equivalent editing codecs. They provide similar quality and performance characteristics to ProRes and are the native codec for Avid Media Composer. Both ProRes and DNx are "intra-frame" codecs, meaning each frame is compressed independently, which makes scrubbing and playback efficient.

Camera-native formats like RED R3D, ARRI ARRIRAW, and Blackmagic RAW preserve the maximum quality from the camera sensor and offer extensive flexibility in post-production, particularly for color grading. However, they are computationally expensive to work with directly, which is why many workflows transcode to ProRes or DNx for editing and then return to the native format for final color grading and output.

H.264 (AVC) remains the most universally compatible delivery codec. It is supported by virtually every device, browser, and platform. For delivery, H.264 is typically packaged in an MP4 container with AAC audio. This combination works for broadcast contribution, streaming platforms, social media, and web embedding.

H.265 (HEVC) offers significantly better compression efficiency than H.264, meaning higher quality at the same file size or smaller files at the same quality. It is increasingly used for 4K and HDR delivery where the improved efficiency matters most. However, hardware decoder support is not as universal as H.264, particularly on older devices and some web browsers.

AV1 is an open, royalty-free codec that rivals H.265 in efficiency. YouTube, Netflix, and other major platforms support AV1 delivery. Its main disadvantage is encoding speed, which is still significantly slower than H.264 or H.265, making it less practical for workflows that require fast turnaround. For pre-encoded library content, AV1 is an excellent choice.

Broadcast delivery often requires MXF (Material Exchange Format) containers with specific codec and metadata configurations. MXF Op1a with XDCAM HD422 is common for HD broadcast delivery. For contribution-quality exchange between facilities, MXF with uncompressed or lightly compressed video (like JPEG 2000) preserves maximum quality.

For archival, the priority is long-term accessibility and quality preservation. Uncompressed video in MXF or MOV containers provides the highest quality but requires substantial storage. Lossless codecs like FFV1 (open format, used by many cultural heritage institutions) or ProRes 4444 (widely supported) offer a practical compromise between quality and storage requirements.

Consider the long-term viability of your chosen archive format. Open, well-documented formats like MXF with FFV1 are more likely to remain accessible decades from now than proprietary formats that depend on specific software. The Academy of Motion Picture Arts and Sciences recommends ACES (Academy Color Encoding System) with OpenEXR files for long-term motion picture archiving, though this is primarily used for feature film and high-end television production.

The right format depends on where the content is in the workflow. During production and editing, prioritize quality and performance: ProRes, DNx, or camera-native formats. For review and collaboration, streaming-friendly formats like H.264 in MP4 enable efficient remote review through platforms like RecReview without requiring large file downloads.

For final delivery, match the specification of the receiving platform exactly. Do not assume that a format that works for one platform will work for another. YouTube, Netflix, broadcasters, and cinema distributors all have specific format requirements that may differ in codec, container, metadata, and audio configuration.

Keep a reference document of format specifications for each of your common delivery destinations and update it regularly as platform requirements evolve. This document becomes your encoding recipe book, ensuring consistent, compliant deliverables regardless of which team member handles the export. Format specifications change more often than many teams realize, so assign someone to monitor updates from each platform.