mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Joey Parrish
47 lines
1.9 KiB
HTML
47 lines
1.9 KiB
HTML
<!--
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Copyright 2014 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<p>
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There are several content scenarios we do not support. We make no claims about
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their validity within the DASH specification nor any related specification. We
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have not found any of these things in any existing DASH content. Most of these
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restrictions allow us to make simplifying assumptions in the code.
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<ul>
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<li>MPD Representations containing more than one of SegmentBase, SegmentList,
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or SegmentBase.</li>
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<li>MPD SegmentTimelines which contain gaps between segments.</li>
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<li>MPD SegmentTimeline combined with an explicit segment index URL.</li>
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<li>Representations within an AdaptationSet where the MIME type varies.</li>
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<li>Changing DRM schemes across MPD Periods.</li>
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<li>Changing DRM schemes when switching MPD Representations.</li>
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<li>WebM streams without initialization segments.</li>
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<li>Parsing dynamically-sized EBML elements in WebM streams.</li>
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<li>Parsing 8-byte EBML IDs in WebM streams. *</li>
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<li>Parsing EBML integers with more than 53 significant bits in WebM streams.
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*</li>
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<li>Parsing nested SIDX boxes in MP4 streams.</li>
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<li>MP4 video AdaptationSet with WebM audio AdaptationSet, or vice-versa.
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<ul><li>We support MPDs with both MP4 and WebM in the same manifest, but we
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will choose either MP4 or WebM for both audio and video. They will
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never be mixed.</li></ul>
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</li>
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</ul>
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* = JavaScript limitation
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</p>
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