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Each "arib" subtitle PES can contain up to 2 language versions.
Make it user-selectable via an AVOption.
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ISDB向けFFmpeg

ISDB-S/Tから受信・保存したMPEG-TSを再生するため、 ffmpeg 6.1をベースに以下の拡張を加えた。

  • MPEG-TS demuxerの拡張 (mpegts)
  • DVBデバイスからの入力の拡張 (dvbproto)

ISDB向けmpvで使用されている。

旧版isdb-5.1ブランチで追加した"ISDB字幕デコーダ"の機能は削除した。 (本家がlibaribcaptionに対応したため。)


MPEG-TS demuxer (mpegts)

機能

  • BCAS復号(デスクランブリング)
  • その他
    • 局名などのメタ情報の文字コード変換
    • ユーザによる映像/音声/字幕の各トラックや番組の切り替え対応
    • TSストリーム内での番組(プログラム,PMT)切り替わり対応
    • 音声/字幕トラックの言語タグやデフォルトトラック指定の認識
    • デュアルモノやマルチ言語の字幕PESへの対応

関連モジュール・ライブラリ

  • libdemulti2 + {libpcsclite | libsobacas | libyakisoba}: BCAS復号のため(optional) (入手はtor/Freenetより)
  • gconv-module-aribb24: メタ情報の文字コード変換のため (optional)
  • (libaribcation: 字幕デコードのため。必要に応じて)

DVBデバイスからの入力 (dvbproto)

機能

  • libavformatにdvb://[cardno@]channel_name[?option=val...]の形式での入力機能を追加。
  • チャンネル設定ファイルのデフォルトパスは ${XDG_DATA_HOME}/ffmpeg/channels.conf、 ISDB向けmplayerのものと同じ1行1チャンネルの形式。

なお、mpvやmplayerは自前で同等機能を実装しているので、 本機能はffplayプログラムでの使用等を想定したおまけ的・テスト的な機能である。

以下、オリジナルのREADME.md


FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.

About

mirror of git://source.ffmpeg.org/ffmpeg.git

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LICENSE.md
GPL-2.0
COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv3

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