koriweb
9609c04755
W3Schools 튜토리얼을 P-Reinforce v3.1 포맷으로 위키화(영어 본문, 한/영 섹션 헤더). - Topic_HTML: 59문서 (튜토리얼+예제, 레퍼런스/메타 제외) - Topic_CSS: 190문서 (메인 + Advanced/Flexbox/Grid/RWD 전체) - Topic_JavaScript: 120문서 (코어 언어; Temporal/DOM상세/BOM/WebAPI/AJAX/jQuery/Graphics 등은 후속) 각 폴더 00_INDEX.md(MOC) 포함. 코드 verbatim, 미확인분은 "Not found in source" 표기. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
6.7 KiB
id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
| id | title | category | status | verification_status | canonical_id | aliases | duplicate_of | source_trust_level | confidence_score | created_at | updated_at | review_reason | merge_history | tags | raw_sources | applied_in | github_commit | |||||||||||||
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| html-media | HTML Media | Frontend | draft | conceptual |
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B | 0.88 | 2026-06-23 | 2026-06-23 |
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HTML Media
🎯 한 줄 통찰 (One-line insight)
Web multimedia is anything you can see or hear — images, music, sound, video, animations — but only a small set of formats (MP4/WebM/Ogg for video, MP3/WAV/Ogg for audio) is actually supported by the HTML standard across browsers. [S1]
🧠 핵심 개념 (Core concepts)
- Multimedia is broad — it can be almost anything you can hear or see: images, music, sound, videos, records, films, animations, and more. [S1]
- Browsers evolved — early web browsers supported only text in a single font and color; modern browsers support colors, fonts, images, and multimedia. [S1]
- Formats matter — multimedia files have their own formats and extensions; only some are supported by HTML. [S1]
- HTML-supported video — only MP4, WebM, and Ogg video are supported by the HTML standard. [S1]
- HTML-supported audio — only MP3, WAV, and Ogg audio are supported by the HTML standard. [S1]
🧩 추출된 패턴 (Extracted patterns)
- Format-by-extension pattern — a media file's container/codec is identified by its extension (.mp4, .webm, .ogg, .mp3, .wav). [S1]
- HTML-standard subset pattern — many formats exist, but author for the HTML-supported subset (MP4/WebM/Ogg, MP3/WAV/Ogg) for cross-browser playback. [S1]
- Recommended-format pattern — MP4 is supported by all browsers and recommended by YouTube; MP3 is supported by all browsers for audio. [S1]
📖 세부 내용 (Details)
What is multimedia? Multimedia on the web is sound, music, videos, movies, and animations. Multimedia comes in many different formats — almost anything you can hear or see: images, music, sound, videos, records, films, animations, and more. [S1]
Browser support — web pages often contain multimedia elements of different types and formats. Early web browsers had support for only text, limited to a single font in a single color. Later browsers added support for colors, fonts, images, and multimedia. [S1]
Common video formats — multimedia elements (like audio or video) are stored in media files; the most common way to discover the type is to look at the file extension: [S1]
| Format | File | Description |
|---|---|---|
| MPEG | .mpg, .mpeg | One of the first popular video formats for the web; no longer supported in HTML |
| AVI | .avi | Developed by Microsoft; commonly used in video cameras and TV hardware; plays well on Windows but not in web browsers |
| WMV | .wmv | Windows Media Video, developed by Microsoft; plays well on Windows but not in web browsers |
| QuickTime | .mov | Developed by Apple; plays well on Apple computers but not in web browsers |
| RealVideo | .rm, .ram | Developed by Real Media for video streaming with low bandwidths; does not play in web browsers |
| Flash | .swf, .flv | Developed by Macromedia, often requires an extra plug-in; no longer supported |
| Ogg | .ogg | Theora Ogg, supported by HTML |
| WebM | .webm | Developed by Mozilla, Opera, Adobe, and Google; supported by HTML |
| MP4 | .mp4 | Designed to store video and audio; commonly used in video cameras and TV hardware; supported by all browsers and recommended by YouTube |
Note: Only MP4, WebM, and Ogg video are supported by the HTML standard. [S1]
Common audio formats — [S1]
| Format | File | Description |
|---|---|---|
| MIDI | .mid, .midi | Format for electronic music devices; very small files; not supported directly by web browsers |
| RealAudio | .rm, .ram | Developed by Real Media for audio streaming at low bandwidths; does not play in web browsers |
| WMA | .wma | Windows Media Audio; plays well on Windows but not in web browsers |
| AAC | .aac | Advanced Audio Coding, developed by Apple as the default format for iTunes; does not play in web browsers |
| WAV | .wav | Developed by IBM and Microsoft; plays well on Windows, Macintosh, and Linux; supported by HTML |
| Ogg | .ogg | Developed by the Xiph.Org Foundation; supported by HTML |
| MP3 | .mp3 | The most popular format for music players; combines good compression with high quality; supported by all browsers |
| MP4 | .mp4 | A video format, but can also be used for audio; supported by all browsers |
Note: Only MP3, WAV, and Ogg audio are supported by the HTML standard. [S1]
🛠️ 적용 사례 (Applied in summary)
The format tables above are the practical takeaway: when adding <video> or <audio> to a page, author for the HTML-supported subset (MP4/WebM/Ogg video; MP3/WAV/Ogg audio), favoring MP4 and MP3 for the widest browser coverage. No external project/commit applications found in the source.
💻 코드 패턴 (Code patterns)
This overview page does not present a specific code example; the supported formats are applied via the <video> and <audio> elements documented in HTML Video and HTML Audio. The actionable pattern is the HTML-supported format subset:
- Video: MP4 (
video/mp4), WebM (video/webm), Ogg (video/ogg) - Audio: MP3 (
audio/mpeg), WAV (audio/wav), Ogg (audio/ogg)
⚖️ 모순 및 업데이트 (Contradictions & updates)
No contradictions found in the source. The historical note is that several once-common formats (MPEG, Flash .swf/.flv, RealMedia) are "no longer supported" in browsers — reflecting the move to the small, royalty-conscious HTML-native format set. [S1]
✅ 검증 상태 및 신뢰도
- 상태: draft
- 검증 단계: conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
- 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
- 신뢰 점수: 0.88
- 중복 검사 결과: 신규 생성 (New discovery)
🔗 지식 그래프 (Knowledge Graph)
- 상위/루트: HTML Tutorial
- 관련 개념: HTML Video, HTML Audio, HTML Plug-ins, HTML5
- 참조 맥락: Referenced when choosing which audio/video file formats to provide for cross-browser playback.
📚 출처 (Sources)
- [S1] W3Schools — HTML Media — https://www.w3schools.com/html/html_media.asp
📝 변경 이력 (Change history)
- 2026-06-23: Initial draft synthesized from the W3Schools "HTML Media" page (Astra wiki-curation, P-Reinforce v3.1 format).