ffmpeg-layouts

• 导航 (返回顶部)

  • [1. 声道布局基本概念](#1. 声道布局基本概念)

  • [2. ffmpeg -layouts](#2. ffmpeg -layouts)

    • [2.1 单独的声道](#2.1 单独的声道)
    • [2.2 标准声道布局](#2.2 标准声道布局)

  • [3. 更多信息](#3. 更多信息)

    #1. 声道布局基本概念
    2. ffmpeg -layouts
    2.1 单独的声道
    2.2 标准声道布局
    3. 更多信息
    #1. 声道布局基本概念
    2. ffmpeg -layouts
    2.1 单独的声道
    2.2 标准声道布局
    3. 更多信息
    #1. 声道布局基本概念
    2. ffmpeg -layouts
    2.1 单独的声道
    2.2 标准声道布局
    3. 更多信息
    #1. 声道布局基本概念
    2. ffmpeg -layouts
    2.1 单独的声道
    2.2 标准声道布局
    3. 更多信息
    #1. 声道布局基本概念
    2. ffmpeg -layouts
    2.1 单独的声道
    2.2 标准声道布局
    3. 更多信息

1. 声道布局基本概念

stream 音频流
包含音频的视频及单独的音频文件，包含一个或多个音频流(stream)。
比如一些中英双语视频，音频流各自独立，可以通过播放软件切换播放。
channels 声道
每个音频流至少包含一个声道，简单理解就是一个声道对应一个喇叭。
比如左右立体声，对应左右2个喇叭，就能听出声音是从左边还是右边发出的。
layouts 声道布局
声道的组合就是声道布局。比如一些常见的声道布局:

• mono，单声道。
• stereo，立体声，左右2个喇叭。
• 2.1，左右2个喇叭加一个低音炮 LFE。
• 5.1，前面左中右3个，后面左右2个，再加一个低音喇叭。大房间。
• 5.1(side)，前面左中右3个，侧面左右2个，再加一个低音喇叭。前后比较短的房间。

2. ffmpeg -layouts

ffmpeg -layouts 命令列出2个列表：

• (channels) Individual channels，单独的声道列表，说明该声道的位置信息。
• (channel_layout) Standard channel layouts，标准声道布局列表，列出每种布局包含那些声道。
  (ffmpeg -i 视频或音频文件名称) 命令可列出一些视频或音频的基本信息。
  只能看到布局名称，具体声道信息可以对照这2个列表。
  一些滤波器(比如 channelsplit)会用到这2种参数: channels，channel_layout。

2.1 单独的声道

|------|-----------------------|-----------|----------|----------|-----------|------------|----------|---------|------------|--------------|---------------|----------|---|
| NAME | DESCRIPTION | front | back | left | right | center | side | top | bottom | surround | 其他 | 单独的声道 | |
| FL | front left | front | | left | | | | | | | | 前左 | 2 |
| FR | front right | front | | | right | | | | | | | 前右 | 2 |
| FC | front center | front | | | | center | | | | | | 前中 | 2 |
| LFE | low frequency | | | | | | | | | | low frequency | 重低音 | 1 |
| BL | back left | | back | left | | | | | | | | 后左 | 2 |
| BR | back right | | back | | right | | | | | | | 后右 | 2 |
| FLC | front left-of-center | front | | left | | center | | | | | | 前部中心偏左 | 3 |
| FRC | front right-of-center | front | | | right | center | | | | | | 前部中心偏右 | 3 |
| BC | back center | | back | | | center | | | | | | 后中 | 2 |
| SL | side left | | | left | | | side | | | | | 左侧 | 2 |
| SR | side right | | | | right | | side | | | | | 右侧 | 2 |
| TC | top center | | | | | center | | top | | | | 顶部中心 | 2 |
| TFL | top front left | front | | left | | | | top | | | | 顶部前方左 | 3 |
| TFC | top front center | front | | | | center | | top | | | | 顶部前方中间 | 3 |
| TFR | top front right | front | | | right | | | top | | | | 顶部前方右 | 3 |
| TBL | top back left | | back | left | | | | top | | | | 顶部后方左 | 3 |
| TBC | top back center | | back | | | center | | top | | | | 顶部后方中间 | 3 |
| TBR | top back right | | back | | right | | | top | | | | 顶部后方右 | 3 |
| DL | downmix left | | | left | | | | | | | downmix | 混音左 | 2 |
| DR | downmix right | | | | right | | | | | | downmix | 混音右 | 2 |
| WL | wide left | | | left | | | | | | | wide | 左侧宽阔 | 2 |
| WR | wide right | | | | right | | | | | | wide | 右侧宽阔 | 2 |
| SDL | surround direct left | | | left | | | | | | surround | direct | 环绕声直接左声道 | 3 |
| SDR | surround direct right | | | | right | | | | | surround | direct | 环绕声直接右声道 | 3 |
| LFE2 | low frequency 2 | | | | | | | | | | low frequency | 重低音2 | 1 |
| TSL | top side left | | | left | | | side | top | | | | 顶部左侧 | 3 |
| TSR | top side right | | | | right | | side | top | | | | 顶部右侧 | 3 |
| BFC | bottom front center | front | | | | center | | | bottom | | | 底部前方中心 | 3 |
| BFL | bottom front left | front | | left | | | | | bottom | | | 底部前方左 | 3 |
| BFR | bottom front right | front | | | right | | | | bottom | | | 底部前方右 | 3 |
| SSL | side surround left | | | left | | | side | | | surround | | 左侧环绕 | 3 |
| SSR | side surround right | | | | right | | side | | | surround | | 右侧环绕 | 3 |
| TTL | top surround left | | | left | | | | top | | surround | | 顶部左环绕 | 3 |
| TTR | top surround right | | | | right | | | top | | surround | | 顶部右环绕 | 3 |
| BIL | binaural left | | | left | | | | | | | binaural | 双耳左 | 2 |
| BIR | binaural right | | | | right | | | | | | binaural | 双耳右 | 2 |
| NAME | DESCRIPTION | 前 | 后 | 左 | 右 | 中 | 侧面 | 顶部 | 底部 | 环绕 | 其他 | 描述 | |
| | | 11 | 6 | 14 | 14 | 8 | 6 | 11 | 3 | 6 | 10 | | |

2.2 标准声道布局

|----------------|--------|--------|--------|---------|--------|--------|---------|---------|--------|--------|--------|--------|---------|---------|---------|---------|---------|---------|--------|--------|--------|--------|---------|---------|----------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|----------|----|
| NAME | FL | FR | FC | LFE | BL | BR | FLC | FRC | BC | SL | SR | TC | TFL | TFC | TFR | TBL | TBC | TBR | DL | DR | WL | WR | SDL | SDR | LFE2 | TSL | TSR | BFC | BFL | BFR | SSL | SSR | TTL | TTR | BIL | BIR | NAME | |
| mono | | | FC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 单声道 | 1 |
| stereo | FL | FR | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 立体声 | 2 |
| 2.1 | FL | FR | | LFE | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2.1 | 3 |
| 3 | FL | FR | FC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3 | 3 |
| 3.0(back) | FL | FR | | | | | | | BC | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3.0(后) | 3 |
| 4 | FL | FR | FC | | | | | | BC | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4 | 4 |
| quad | FL | FR | | | BL | BR | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | quad | 4 |
| quad(side) | FL | FR | | | | | | | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | quad(侧) | 4 |
| 3.1 | FL | FR | FC | LFE | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3.1 | 4 |
| 5 | FL | FR | FC | | BL | BR | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 5 | 5 |
| 5.0(side) | FL | FR | FC | | | | | | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 5.0(侧) | 5 |
| 4.1 | FL | FR | FC | LFE | | | | | BC | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.1 | 5 |
| 5.1 | FL | FR | FC | LFE | BL | BR | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 5.1 | 6 |
| 5.1(side) | FL | FR | FC | LFE | | | | | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 5.1(侧) | 6 |
| 6 | FL | FR | FC | | | | | | BC | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 6 | 6 |
| 6.0(front) | FL | FR | | | | | FLC | FRC | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 6.0(前) | 6 |
| 3.1.2 | FL | FR | FC | LFE | | | | | | | | | TFL | | TFR | | | | | | | | | | | | | | | | | | | | | | 3.1.2 | 6 |
| hexagonal | FL | FR | FC | | BL | BR | | | BC | | | | | | | | | | | | | | | | | | | | | | | | | | | | 六边形 | 6 |
| 6.1 | FL | FR | FC | LFE | | | | | BC | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 6.1 | 7 |
| 6.1(back) | FL | FR | FC | LFE | BL | BR | | | BC | | | | | | | | | | | | | | | | | | | | | | | | | | | | 6.1(后) | 7 |
| 6.1(front) | FL | FR | | LFE | | | FLC | FRC | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 6.1(前) | 7 |
| 7 | FL | FR | FC | | BL | BR | | | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 7 | 7 |
| 7.0(front) | FL | FR | FC | | | | FLC | FRC | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 7.0(前) | 7 |
| 7.1 | FL | FR | FC | LFE | BL | BR | | | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 7.1 | 8 |
| 7.1(wide) | FL | FR | FC | LFE | BL | BR | FLC | FRC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 7.1(宽) | 8 |
| 7.1(wide-side) | FL | FR | FC | LFE | | | FLC | FRC | | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 7.1(侧宽) | 8 |
| 5.1.2 | FL | FR | FC | LFE | | | | | | SL | SR | | TFL | | TFR | | | | | | | | | | | | | | | | | | | | | | 5.1.2 | 8 |
| 5.1.2(back) | FL | FR | FC | LFE | BL | BR | | | | | | | TFL | | TFR | | | | | | | | | | | | | | | | | | | | | | 5.1.2(后) | 8 |
| octagonal | FL | FR | FC | | BL | BR | | | BC | SL | SR | | | | | | | | | | | | | | | | | | | | | | | | | | 八边形 | 8 |
| cube | FL | FR | | | BL | BR | | | | | | | TFL | | TFR | TBL | | TBR | | | | | | | | | | | | | | | | | | | 立方体 | 8 |
| 5.1.4 | FL | FR | FC | LFE | | | | | | SL | SR | | TFL | | TFR | TBL | | TBR | | | | | | | | | | | | | | | | | | | 5.1.4 | 10 |
| 7.1.2 | FL | FR | FC | LFE | BL | BR | | | | SL | SR | | TFL | | TFR | | | | | | | | | | | | | | | | | | | | | | 7.1.2 | 10 |
| 7.1.4 | FL | FR | FC | LFE | BL | BR | | | | SL | SR | | TFL | | TFR | TBL | | TBR | | | | | | | | | | | | | | | | | | | 7.1.4 | 12 |
| 7.2.3 | FL | FR | FC | LFE | BL | BR | | | | SL | SR | | TFL | | TFR | | TBC | | | | | | | | LFE2 | | | | | | | | | | | | 7.2.3 | 12 |
| 9.1.4 | FL | FR | FC | LFE | BL | BR | FLC | FRC | | SL | SR | | TFL | | TFR | TBL | | TBR | | | | | | | | | | | | | | | | | | | 9.1.4 | 14 |
| 9.1.6 | FL | FR | FC | LFE | BL | BR | FLC | FRC | | SL | SR | | TFL | | TFR | TBL | | TBR | | | | | | | | TSL | TSR | | | | | | | | | | 9.1.6 | 16 |
| hexadecagonal | FL | FR | FC | | BL | BR | | | BC | SL | SR | | TFL | TFC | TFR | TBL | TBC | TBR | | | WL | WR | | | | | | | | | | | | | | | 十六边形 | 16 |
| binaural | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BIL | BIR | 双耳立体 | 2 |
| downmix | | | | | | | | | | | | | | | | | | | DL | DR | | | | | | | | | | | | | | | | | 混音 | 2 |
| 22.2 | FL | FR | FC | LFE | BL | BR | FLC | FRC | BC | SL | SR | TC | TFL | TFC | TFR | TBL | TBC | TBR | | | | | | | LFE2 | TSL | TSR | BFC | BFL | BFR | | | | | | | 22.2 | 24 |
| NAME | FL | FR | FC | LFE | BL | BR | FLC | FRC | BC | SL | SR | TC | TFL | TFC | TFR | TBL | TBC | TBR | DL | DR | WL | WR | SDL | SDR | LFE2 | TSL | TSR | BFC | BFL | BFR | SSL | SSR | TTL | TTR | BIL | BIR | NAME | |
| | 37 | 37 | 30 | 21 | 18 | 18 | 8 | 8 | 10 | 21 | 21 | 1 | 12 | 2 | 12 | 7 | 3 | 7 | 1 | 1 | 1 | 1 | 0 | 0 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | | |

3. 更多信息

https://trac.ffmpeg.org/wiki
https://ffmpeg.org/documentation.html