[FFmpeg-user] Mpeg PID vs. program id?

[Roger Pack]

On 1/7/16, Andy Furniss <adf.lists at gmail.com> wrote:
> Roger Pack wrote:
>> Hello.  I'm trying to understand how MPEG mapping terminology works.
>>
>> Given this type of input:
>> $ ffmpeg -i INPUT
>> ...
>> Input #0, mpegts, from 'INPUT':
>>    Duration: N/A, start: 22159.226833, bitrate: N/A
>>    Program 1346
>>      Metadata:
>>        service_name    : 7TWO
>>        service_provider: Seven Network
>>      Stream #0:3[0x406]: Unknown: none ([5][0][0][0] / 0x0005)
>>      Stream #0:6[0x421]: Video: mpeg2video (Main) ([2][0][0][0] /
>> 0x0002), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 14950 kb/s,
>> 25 fps, 25 tbr, 90k tbn, 50 tbc
>>      Stream #0:7[0x422](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000
>> Hz, stereo, s16p, 192 kb/s
>>      Stream #0:8[0x424](eng): Subtitle: dvb_teletext ([6][0][0][0] /
>> 0x0006), 492x250
>>      Stream #0:4[0x499]: Unknown: none ([11][0][0][0] / 0x000B)
>>
>> I know I can "map out" streams by using
>>
>> ffmpeg -i INPUT -map 0:p:1346 #  both inputs from program 1344
>>
>> or to select a single stream
>>
>> ffmpeg -i INPUT -map i:0x40
>>
>> Question:
>> in this documentation:
>>
>> https://ffmpeg.org/ffmpeg.html#Stream-specifiers-1
>>
>> It refers to the first example as selecting by "program id"
>> and the second example as selecting
>> "by stream id (e.g. PID in MPEG-TS container)."
>>
>> What is the difference between "program id" and "PID" in this
>> verbiage? Does PID stand for program id here?
>
> https://en.wikipedia.org/wiki/MPEG_transport_stream
>
> PID = Packet Identifier

Perfect, thank you, wiki page has been updated :)