amarghosh/mp4viewer — ISOBMFF Atom Analyzer

Python ISOBMFF atom analyser with shell, GTK, and JSON output for inspecting MP4 structure.

Link

slhck/h26x-extractor — H.264/H.265 NAL ExtractorPython tool extracting NAL units from H.264/H.265 bitstreams, decoding type and content with JSON output.
codem-isoboxer — Browser ISOBMFF Box ParserLightweight browser ISOBMFF (MP4) box parser for inspecting fragmented and progressive MP4 structure.
chemag/h264nal — C++ H.264/H.265 NAL ParserModern C++ NAL-unit parser for H.264 and H.265 (h265nal sister project), with cmake+tests, dumping parsed NALs from Annex B streams.
epiclabs-io/inspector.js — TS Media Container DemuxersTypeScript demuxers/inspectors for MPEG-TS, MP4, and WebM containers.
DVBSnoopAn analyzer and debugging tool for MPEG transport streams and DVB broadcasts. It allows inspection of packet structure, tables (PAT, PMT, e…
FreeCutProfessional-grade browser-based video editor with multi-track editing, WebGPU/WebCodecs support, keyframe animations, AI tools, real-time…