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2026년 3월 30일 17 min read

[2026] Time Complexity Optimization Checklist for Coding Interviews | Escape TLE

Reduce time complexity in coding interviews: patterns to convert O(N²) to O(N log N), eliminate duplicate calculations, and data structure selection che...
2026년 3월 30일 22 min read

[2026] Sliding Window Pattern | Fixed & Variable Subarrays in O(n)

Sliding window algorithm: fixed and variable windows on arrays and strings—max sum, minimum size subarray, longest unique substring, anagrams—with Pytho...
2026년 3월 30일 22 min read

[2026] Two Pointers Pattern | From O(n²) to O(n) in Arrays

Two pointers algorithm pattern: sorted array pair sums, deduplication, three-sum, and container-with-water—Python examples and complexity notes for codi...
2026년 3월 30일 17 min read

[2026] AAC Audio Codec: Complete Guide | LC-AAC, HE-AAC & FFmpeg Encoding

AAC profiles (LC-AAC, HE-AAC), MPEG-4 containers, FFmpeg encoding for streaming and mobile—bitrate tiers, sample rates, and practical quality tradeoffs.
2026년 3월 30일 16 min read

[2026] MP3 Audio Codec in Practice | LAME, CBR, VBR & FFmpeg Encoding

MP3 history and MPEG-1 Layer III, LAME-based CBR and VBR, FFmpeg examples—balance quality and size when compatibility comes first.
2026년 3월 30일 18 min read

[2026] Opus Audio Codec Next-Generation Standard | WebRTC, Low Latency, FFmpeg Practical Complete Guide

IETF standard Opus: voice/music modes, SILK/CELT hybrid, low-latency real-time communication, and FFmpeg encoding. Master the next-generation royalty-fr...
2026년 3월 30일 18 min read

[2026] Opus Audio Codec: Next-Gen Standard | WebRTC, Low Latency & FFmpeg

IETF Opus: speech and music modes, SILK and CELT hybrid, realtime WebRTC, and FFmpeg encoding—royalty-friendly audio for voice, games, and the web.
2026년 3월 30일 17 min read

[2026] MKV (Matroska) in Practice | EBML, Multi-Subtitle & FFmpeg Remux

EBML-based Matroska (MKV): Segment and Cluster layout, multiple audio and subtitle tracks, chapters, and FFmpeg workflows for archives and delivery.
2026년 3월 30일 18 min read

[2026] MP4 Container: Complete Guide | ISO BMFF, moov, mdat, fMP4 & FFmpeg

ISO BMFF MP4: ftyp, moov, mdat, faststart, fragmented MP4 for HLS and DASH—FFmpeg remux, tags, and streaming operations in one practical guide.
2026년 3월 30일 16 min read

[2026] WebM Container for the Web | VP9, AV1, Opus, HTML5 & FFmpeg

Matroska-based WebM: allowed codecs, browser support, VP9 and AV1 with Opus, FFmpeg mux, and streaming tips—introductory web delivery guide.