Re: [FFmpeg-user] Mpeg PID vs. program id?
On 1/7/16, Andy Furniss 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 :) ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mpeg PID vs. program id?
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 It works, just wondering. Also as a follow up, is it possible to select by service_name (7TWO in this instance)? Thanks! -roger- ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
