Packetized Elementary Stream
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| − | A '''Packetized Elementary Stream''' (PES) is the basic format by which streams of audio or video, and other content such as subtitles, are stored within [[MPEG-2]] data. A stream may be stored in a file by itself, or in container format such as [[MPEG Program Stream]]. | + | A '''Packetized Elementary Stream''' (PES) is the basic format by which streams of audio or video, and other content such as subtitles, are stored within [[MPEG-1]] or [[MPEG-2]] data. A stream may be stored in a file by itself, or in container format such as [[MPEG Program Stream]]. |
A [[DVD]] has its content in a whole series of these. The [[VobSub]] program grabs the PES packets on a DVD that represent subtitles. | A [[DVD]] has its content in a whole series of these. The [[VobSub]] program grabs the PES packets on a DVD that represent subtitles. | ||
== Disambiguation == | == Disambiguation == | ||
| − | It | + | It's not entirely clear whether the term/concept ''Packetized Elementary Stream'' is used with both MPEG-1 and MPEG-2, or just MPEG-2. Wikipedia's ''Packetized Elementary Stream'' article clearly implies it's just MPEG-2, but Wikipedia's ''MPEG-1'' article says it's used with MPEG-1. In any case, we need a name for all the single-stream MPEG-1 .mpg files that do not use the [[MPEG Program Stream]] format. |
Some sources (e.g. Wikipedia) seem to distinguish between a raw ''Elementary Stream'' (ES), and a ''Packetized Elementary Stream'' (PES). Others (e.g. [[PRONOM]]) seem to use the term ''Elementary Stream'' to refer to a Packetized Elementary Stream. | Some sources (e.g. Wikipedia) seem to distinguish between a raw ''Elementary Stream'' (ES), and a ''Packetized Elementary Stream'' (PES). Others (e.g. [[PRONOM]]) seem to use the term ''Elementary Stream'' to refer to a Packetized Elementary Stream. | ||
Revision as of 13:41, 19 May 2018
A Packetized Elementary Stream (PES) is the basic format by which streams of audio or video, and other content such as subtitles, are stored within MPEG-1 or MPEG-2 data. A stream may be stored in a file by itself, or in container format such as MPEG Program Stream.
A DVD has its content in a whole series of these. The VobSub program grabs the PES packets on a DVD that represent subtitles.
Disambiguation
It's not entirely clear whether the term/concept Packetized Elementary Stream is used with both MPEG-1 and MPEG-2, or just MPEG-2. Wikipedia's Packetized Elementary Stream article clearly implies it's just MPEG-2, but Wikipedia's MPEG-1 article says it's used with MPEG-1. In any case, we need a name for all the single-stream MPEG-1 .mpg files that do not use the MPEG Program Stream format.
Some sources (e.g. Wikipedia) seem to distinguish between a raw Elementary Stream (ES), and a Packetized Elementary Stream (PES). Others (e.g. PRONOM) seem to use the term Elementary Stream to refer to a Packetized Elementary Stream.
