289 lines
8.2 KiB
Markdown
289 lines
8.2 KiB
Markdown
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## 5.3\. Video Decoding
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If device implementations support VP8, VP9, H.264, or H.265 codecs, they:
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* [C-1-1] MUST support dynamic video resolution and frame rate switching
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through the standard Android APIs within the same stream for all VP8, VP9,
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H.264, and H.265 codecs in real time and up to the maximum resolution supported
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by each codec on the device.
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### 5.3.1\. MPEG-2
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If device implementations support MPEG-2 decoders, they:
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* [C-1-1] MUST support the Main Profile High Level.
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### 5.3.2\. H.263
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If device implementations support H.263 decoders, they:
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* [C-1-1] MUST support Baseline Profile Level 30 and Level 45.
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### 5.3.3\. MPEG-4
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If device implementations with MPEG-4 decoders, they:
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* [C-1-1] MUST support Simple Profile Level 3.
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### 5.3.4\. H.264
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If device implementations support H.264 decoders, they:
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* [C-1-1] MUST support Main Profile Level 3.1 and Baseline Profile. Support
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for ASO (Arbitrary Slice Ordering), FMO (Flexible Macroblock Ordering) and RS
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(Redundant Slices) is OPTIONAL.
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* [C-1-2] MUST be capable of decoding videos with the SD (Standard Definition)
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profiles listed in the following table and encoded with the Baseline Profile
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and Main Profile Level 3.1 (including 720p30).
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* SHOULD be capable of decoding videos with the HD (High Definition) profiles
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as indicated in the following table.
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If the height that is reported by the `Display.getSupportedModes()` method is
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equal or greater than the video resolution, device implementations:
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* [C-2-1] MUST support the HD 720p video decoding profiles in the following
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table.
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* [C-2-2] MUST support the HD 1080p video decoding profiles in the following
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table.
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<table>
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<tr>
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<th></th>
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<th>SD (Low quality)</th>
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<th>SD (High quality)</th>
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<th>HD 720p</th>
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<th>HD 1080p</th>
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</tr>
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<tr>
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<th>Video resolution</th>
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<td>320 x 240 px</td>
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<td>720 x 480 px</td>
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<td>1280 x 720 px</td>
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<td>1920 x 1080 px</td>
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</tr>
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<tr>
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<th>Video frame rate</th>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>60 fps</td>
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<td>30 fps (60 fps<sup>Television</sup>)</td>
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</tr>
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<tr>
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<th>Video bitrate</th>
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<td>800 Kbps </td>
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<td>2 Mbps</td>
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<td>8 Mbps</td>
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<td>20 Mbps</td>
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</tr>
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</table>
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### 5.3.5\. H.265 (HEVC)
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If device implementations support H.265 codec, they:
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* [C-1-1] MUST support the Main Profile Level 3 Main tier and the SD video
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decoding profiles as indicated in the following table.
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* SHOULD support the HD decoding profiles as indicated in the following table.
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* [C-1-2] MUST support the HD decoding profiles as indicated in the following
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table if there is a hardware decoder.
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If the height that is reported by the `Display.getSupportedModes()` method is
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equal to or greater than the video resolution, then:
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* [C-2-1] Device implementations MUST support at least one of H.265 or VP9
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decoding of 720, 1080 and UHD profiles.
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<table>
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<tr>
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<th></th>
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<th>SD (Low quality)</th>
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<th>SD (High quality)</th>
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<th>HD 720p</th>
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<th>HD 1080p</th>
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<th>UHD</th>
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</tr>
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<tr>
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<th>Video resolution</th>
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<td>352 x 288 px</td>
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<td>720 x 480 px</td>
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<td>1280 x 720 px</td>
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<td>1920 x 1080 px</td>
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<td>3840 x 2160 px</td>
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</tr>
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<tr>
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<th>Video frame rate</th>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>30/60 fps (60 fps<sup>Television with H.265 hardware decoding</sup>)</td>
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<td>60 fps</td>
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</tr>
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<tr>
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<th>Video bitrate</th>
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<td>600 Kbps </td>
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<td>1.6 Mbps</td>
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<td>4 Mbps</td>
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<td>5 Mbps</td>
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<td>20 Mbps</td>
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</tr>
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</table>
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If device implementations claim to support an HDR Profile through the Media
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APIs:
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* [C-3-1] Device implementations MUST accept the required HDR metadata from
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the application, as well as support extracting and outputting the required HDR
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metadata from the bitstream and/or container.
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* [C-3-2] Device implementations MUST properly display HDR content on the
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device screen or on a standard video output port (e.g., HDMI).
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### 5.3.6\. VP8
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If device implementations support VP8 codec, they:
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* [C-1-1] MUST support the SD decoding profiles in the following table.
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* SHOULD use a hardware VP8 codec that meets the
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[requirements]("http://www.webmproject.org/hardware/rtc-coding-requirements/").
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* SHOULD support the HD decoding profiles in the following table.
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If the height as reported by the `Display.getSupportedModes()` method is equal
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or greater than the video resolution, then:
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* [C-2-1] Device implementations MUST support 720p profiles in the
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following table.
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* [C-2-2] Device implementations MUST support 1080p profiles in the
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following table.
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<table>
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<tr>
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<th></th>
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<th>SD (Low quality)</th>
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<th>SD (High quality)</th>
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<th>HD 720p</th>
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<th>HD 1080p</th>
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</tr>
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<tr>
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<th>Video resolution</th>
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<td>320 x 180 px</td>
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<td>640 x 360 px</td>
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<td>1280 x 720 px</td>
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<td>1920 x 1080 px</td>
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</tr>
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<tr>
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<th>Video frame rate</th>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>30 fps (60 fps<sup>Television</sup>)</td>
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<td>30 (60 fps<sup>Television</sup>)</td>
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</tr>
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<tr>
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<th>Video bitrate</th>
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<td>800 Kbps </td>
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<td>2 Mbps</td>
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<td>8 Mbps</td>
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<td>20 Mbps</td>
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</tr>
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</table>
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### 5.3.7\. VP9
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If device implementations support VP9 codec, they:
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* [C-1-1] MUST support the SD video decoding profiles as indicated in the
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following table.
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* SHOULD support the HD decoding profiles as indicated in the following table.
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If device implementations support VP9 codec and a hardware decoder:
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* [C-2-1] MUST support the HD decoding profiles as indicated in the following
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table.
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If the height that is reported by the `Display.getSupportedModes()` method is
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equal to or greater than the video resolution, then:
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* [C-3-1] Device implementations MUST support at least one of VP9 or H.265
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decoding of the 720, 1080 and UHD profiles.
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<table>
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<tr>
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<th></th>
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<th>SD (Low quality)</th>
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<th>SD (High quality)</th>
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<th>HD 720p</th>
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<th>HD 1080p</th>
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<th>UHD</th>
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</tr>
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<tr>
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<th>Video resolution</th>
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<td>320 x 180 px</td>
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<td>640 x 360 px</td>
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<td>1280 x 720 px</td>
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<td>1920 x 1080 px</td>
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<td>3840 x 2160 px</td>
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</tr>
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<tr>
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<th>Video frame rate</th>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>30 fps</td>
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<td>30 fps (60 fps<sup>Television with VP9 hardware decoding</sup>)</td>
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<td>60 fps</td>
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</tr>
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<tr>
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<th>Video bitrate</th>
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<td>600 Kbps</td>
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<td>1.6 Mbps</td>
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<td>4 Mbps</td>
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<td>5 Mbps</td>
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<td>20 Mbps</td>
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</tr>
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</table>
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If device implementations claim to support `VP9Profile2` or `VP9Profile3`
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through the ['CodecProfileLevel'](
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https://developer.android.com/reference/android/media/MediaCodecInfo.CodecProfileLevel)
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media APIs:
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* Support for 12-bit format is OPTIONAL.
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If device implementations claim to support an HDR Profile (`VP9Profile2HDR`,
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`VP9Profile2HDR10Plus`, `VP9Profile3HDR`, `VP9Profile3HDR10Plus`) through the
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media APIs:
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* [C-4-1] Device implementations MUST accept the required HDR metadata
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([`KEY_HDR_STATIC_INFO`](
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https://developer.android.com/reference/android/media/MediaFormat.html#KEY_HDR_STATIC_INFO)
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for all HDR profiles, as well as
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['KEY_HDR10_PLUS_INFO'](
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https://developer.android.com/reference/android/media/MediaFormat.html#KEY_HDR10_PLUS_INFO)
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for HDR10Plus profiles)
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from the application. They also MUST support extracting and outputting the
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required HDR metadata from the bitstream and/or container.
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* [C-4-2] Device implementations MUST properly display HDR content on the
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device screen or on a standard video output port (e.g., HDMI).
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## 5.3.8\. Dolby Vision
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If device implementations declare support for the Dolby Vision decoder through
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[`HDR_TYPE_DOLBY_VISION`](
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https://developer.android.com/reference/android/view/Display.HdrCapabilities.html#HDR_TYPE_DOLBY_VISION)
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, they:
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* [C-1-1] MUST provide a Dolby Vision-capable extractor.
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* [C-1-2] MUST properly display Dolby Vision content on the device screen or
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on a standard video output port (e.g., HDMI).
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* [C-1-3] MUST set the track index of backward-compatible base-layer(s) (if
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present) to be the same as the combined Dolby Vision layer's track index.
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### 5.3.9\. AV1
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If device implementations support AV1 codec, they:
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* [C-1-1] MUST support Profile 0 including 10-bit content.
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