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ffmpeg_input

FFmpeg を利用した AviUtl 用の入力プラグインです。
以下のような特徴があります。

  • movie-ffmpeg.mp4 のようにファイル名が -ffmpeg が終わるものしか読み込まないオプション
    • L-SMASH Works との併用を想定しており、ファイル名によって使い分けができます
  • 巨大なファイルの読み込みがそれなりに速い代わりにシークが不正確
    • 精度が重要な場合は従来通り L-SMASH Works をご利用ください
    • ファイル内容やカット地点によって影響の大きさは変わると思われます
  • InputPipePlugin 相当の機能を最初から内包
    • 動画の読み込みを別プロセスで行うため AviUtl のメモリ空間を必要以上に圧迫しません
    • ハンドルキャッシュにより同じ動画ファイルを読み込んだオブジェクトの切り替えが高速です
  • 64bit 版の FFmpeg を利用
    • ライセンス周辺の諸問題をクリアするために OpenH264 を動的リンクした LGPL 版の FFmpeg を同梱しています
      以下のリポジトリーでビルドしています
      https://github.com/oov/ffmpeg-openh264-win/releases
      このファイルのライセンスについては ffmpeg64/FFMPEG_LICENSE.txt を参照してください。
    • Cisco-provided binary の OpenH264 を ffmpeg64/bin/ フォルダー内に同梱しています。
      このファイルのライセンスについては ffmpeg64/OPENH264_BINARY_LICENSE.txt を参照してください。

ffmpeg_input の動作には AviUtl version 1.00 以降と拡張編集 version 0.92 以降が必要です。

なお、このプラグインの作成には AviUtlFFmpegDecoder を大いに参考にさせて頂きました。
この場を借りてお礼申し上げます。

注意事項

ffmpeg_input は無保証で提供されます。
ffmpeg_input を使用したこと及び使用しなかったことによるいかなる損害について、開発者は責任を負いません。

これに同意できない場合、あなたは ffmpeg_input を使用することができません。

This software uses libraries from the FFmpeg project under the LGPLv2.1.
Copyright (c) 2003-2022 the FFmpeg developers.

This software uses OpenH264 binary that released from Cisco Systems, Inc.
OpenH264 Video Codec provided by Cisco Systems, Inc.
Copyright (c) 2014 Cisco Systems, Inc. All rights reserved.

ダウンロード

https://github.com/oov/aviutl_ffmpeg_input/releases

インストール

  1. ffmpeg_input.64aui と ffmpeg_input-brdg64.aui と ffmpeg64 を、
    aviutl.exe と同じ場所か、plugins フォルダー内のどちらかにまとめて配置
  2. 配置したファイルがセキュリティソフトにブロックされないよう、適切に除外設定を行ってください
  3. AviUtl のメニューから ファイル→環境設定→入力プラグイン優先度の設定 を選び、
    FFmpeg Video Reader Bridge を L-SMASH Works File Reader や InputPipePlugin より上に配置してください

設定

ファイル→環境設定→入力プラグインの設定→FFmpeg Video Reader Bridgeの設定 を選ぶと設定ダイアログが表示されます。

全体に関わる設定

ファイル名が "-ffmpeg" で終わるファイルだけ読み込む

ファイル名に hello-ffmpeg.mp4 のように -ffmpeg がついているファイルだけをこのプラグインでの読み込み対象にします。
他の読み込みプラグインと併用する場合に有用です。
デフォルトで無効です。

優先するデコーダー

優先的に使用したいデコーダーがある場合に、それらをカンマで区切って指定します。
先に書いたものが優先されます。

例えば h264_cuvid,h264_qsv,libopenh264 と指定すると、h264 のファイルを読み込もうとしたときに h264_cuvid で開き、それに失敗した場合は h264_qsv で、それでも駄目なら libopenh264 で開きます。 デフォルトですべての cuvid 系、qsv 系、libopenh264 を優先するようにしています。

リソース管理モード

拡張編集で読み込んだ動画ファイルが参照されなくなったあとも内部的に保持したままにすることで、次に必要になった際に再利用するための設定です。

  • 通常
    • 特殊な動作を行いません
  • ハンドルキャッシュ
    • 既に開いている動画ファイルが再度開かれようとした場合に、同じファイルを再利用することで、読み込み時間を短縮します
    • 通常の利用時には効率がいいですが、同じ動画ファイルを同時に表示するような使い方をした場合、劇的に遅くなります
    • これがデフォルト設定です
  • ハンドルプール
    • 動画ファイルを閉じる際、実際には閉じず覚えておくことで、再利用時の読み込み時間を短縮します
    • 拡張編集の環境設定で「動画ファイルのハンドル数」を2まで減らすとプールを有効に活用できますが、他の入力プラグインのパフォーマンスが劇的に悪くなります
    • 通常の利用時のパフォーマンスはハンドルプールより悪いですが、同じ動画ファイルを同時に表示しても動作します
    • 試しに作ってみたけど思ったより良くなかったです

ハンドルキャッシュ数

「同じ動画ファイルの別のフレームを同時に表示する」といった使い方をした場合に、パフォーマンスが著しく低下するのを緩和する設定です。
シーンチェンジの前後に同じ動画ファイルがある場合も該当します。

数字を大きくすると消費メモリが大きくなっていくため、必要最低限の数字に設定するのが望ましいです。
同じ動画ファイルを同時に2つ表示するなら 2、もしその状態でシーンチェンジを使うなら、その2倍である 4 が最低限の設定です。

映像

カラーフォーマット変換時のスケーリングアルゴリズム

これは通常の拡大縮小時の処理が変わる設定ではありません。
初期設定である fast bilinear は速度と品質のバランスが良いアルゴリズムです。

音声

音ズレ軽減

何も対策しない場合、動画を途中から再生すると音ズレが発生します。
ここで設定を行うことで動作を改善できます。

ただし、ここでの設定は現時点では音声データをデコードせずにサンプル数が取得できる場合にのみ有効です。
また、作成したインデックスは現時点ではファイルには保存されないため、動画を読み込むたびに作成処理が行われます。
作成中にはダイアログなどは出さず、作成済みの領域に随時アクセス可能になります。

  • なし
    • 何も対策を行いません
    • この設定で開発中に遭遇したズレは1フレーム程度です
    • これがデフォルト設定です
  • リラックス
    • 音声のインデックスを作成します
    • 動画ファイルへの書き出し中の挙動は「正確」と同じです
    • 編集時にまだ作成されてない領域を表示しようとした場合は、ズレを許容します
    • このモードでの動作には AviUtl のバージョン 1.00 または 1.10 が必要です
  • 正確
    • 音声のインデックスを作成します
    • まだ作成されてない領域を表示しようとした場合は、インデックスが作成されるまで待機します

サンプリング周波数

音声のサンプリング周波数を変更するか設定します。

AviUtl ではプロジェクトと動画ファイルのサンプリング周波数が異なっていても、自動的にリサンプリングされます。
しかしその際に使用されるリサンプラーの品質があまり良くないので、結果的に音声の品質が下がります。

例えばこの設定を 48000Hz にしてプロジェクトも 48000Hz で作成しておけば、 事前に品質の良いリサンプラーを通すことができます。

リサンプリングに SoX を使用する

標準の SW Resampler の代わりに、より品質のいい SoX Resampler を使用します。

サンプリング周波数の設定を 変更しない にしている場合は、この設定は無視されます。

位相を反転（デバッグ用）

読み込んだ音声データの位相を反転させます。

Credits

ffmpeg_input is made possible by the following open source softwares.

Acutest

https://github.com/mity/acutest

The MIT License (MIT)

Copyright © 2013-2019 Martin Mitáš

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

AviUtlPluginSDK License

http://spring-fragrance.mints.ne.jp/aviutl/

The MIT License

Copyright (c) 1999-2012 Kenkun

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

AviUtlFFmpegDecoder

https://github.com/kusaanko/AviUtlFFmpegDecoder

Apache License

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                    http://www.apache.org/licenses/

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FFmpeg

https://www.ffmpeg.org/

This software uses libraries from the FFmpeg project under the LGPLv2.1.
Copyright (c) 2003-2022 the FFmpeg developers.

See ffmpeg64/FFMPEG_LICENSE.txt for details.

hashmap.c

https://github.com/tidwall/hashmap.c

NOTICE: This program used a modified version of hashmap.c.
https://github.com/oov/hashmap.c/tree/simplify

The MIT License (MIT)

Copyright (c) 2020 Joshua J Baker

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

OpenH264

https://github.com/cisco/openh264

This software uses OpenH264 binary that released from Cisco Systems, Inc.
OpenH264 Video Codec provided by Cisco Systems, Inc.
Copyright (c) 2014 Cisco Systems, Inc. All rights reserved.

See ffmpeg64/OPENH264_BINARY_LICENSE.txt for details.

TinyCThread

https://github.com/tinycthread/tinycthread

NOTICE: This program used a modified version of TinyCThread.
https://github.com/oov/tinycthread

Copyright (c) 2012 Marcus Geelnard 2013-2016 Evan Nemerson

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