Xiaomi Pocophone F1 128Gb+6Gb Dual LTE Руководство по эксплуатации онлайн [54/118] 775101

Xiaomi Pocophone F1 128Gb+6Gb Dual LTE Руководство по эксплуатации онлайн [54/118] 775101
[C-1-1] MUST support Baseline Profile Level 45.
SHOULD support dynamically configurable bitrates for the supported encoder.
5.2.2. H-264
If device implementations support H.264 codec, they:
[C-1-1] MUST support Baseline Profile Level 3. However, support for ASO (Arbitrary Slice
Ordering), FMO (Flexible Macroblock Ordering) and RS (Redundant Slices) is OPTIONAL.
Moreover, to maintain compatibility with other Android devices, it is RECOMMENDED that
ASO, FMO and RS are not used for Baseline Profile by encoders.
[C-1-2] MUST support the SD (Standard Definition) video encoding profiles in the
following table.
SHOULD support Main Profile Level 4.
SHOULD support the HD (High Definition) video encoding profiles as indicated in the
following table.
If device implementations report support of H.264 encoding for 720p or 1080p resolution videos
through the media APIs, they:
[C-2-1] MUST support the encoding profiles in the following table.
SD (Low quality) SD (High quality) HD 720p HD 1080p
Video resolution 320 x 240 px 720 x 480 px 1280 x 720 px 1920 x 1080 px
Video frame rate 20 fps 30 fps 30 fps 30 fps
Video bitrate 384 Kbps 2 Mbps 4 Mbps 10 Mbps
5.2.3. VP8
If device implementations support VP8 codec, they:
[C-1-1] MUST support the SD video encoding profiles.
SHOULD support the following HD (High Definition) video encoding profiles.
SHOULD support writing Matroska WebM files.
SHOULD use a hardware VP8 codec that meets the WebM project RTC hardware coding
requirements , to ensure acceptable quality of web video streaming and video-conference
services.
If device implementations report support of VP8 encoding for 720p or 1080p resolution videos
through the media APIs, they:
[C-2-1] MUST support the encoding profiles in the following table.
SD (Low quality) SD (High quality) HD 720p HD 1080p
Video resolution 320 x 180 px 640 x 360 px 1280 x 720 px 1920 x 1080 px
Video frame rate 30 fps 30 fps 30 fps 30 fps
Video bitrate 800 Kbps 2 Mbps 4 Mbps 10 Mbps
5.2.4. VP9
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