VideoHelp Forum - DVB / IPTV https://forum.videohelp.com/ Everything about IPTV, Digital Video Broadcasting(DVB), ATSC, High Definition TV(HDTV) and other Digital TV standards. DVB, HDTV computer cards. Capturing and processing digital video broadcasts. Also TV, LCD, Plasma discussions. en Wed, 15 Jul 2026 17:14:45 GMT vBulletin 60 https://forum.videohelp.com/images/misc/rss.png VideoHelp Forum - DVB / IPTV https://forum.videohelp.com/ .ts file multiplexing: practical uses when having multiple A/V tracks https://forum.videohelp.com/threads/420734-ts-file-multiplexing-practical-uses-when-having-multiple-A-V-tracks?goto=newpost Sun, 21 Jun 2026 05:44:11 GMT Hello, world! I’ve been playing with .ts video files. It turns out, through FFmpeg (https://www.videohelp.com/software/ffmpeg), you can multiplex many A/V tracks into a single file. I consider it can be used not only for audio tracks (American English, español mexicano, français du France, and so... Hello, world! I’ve been playing with .ts video files. It turns out, through FFmpeg, you can multiplex many A/V tracks into a single file.
I consider it can be used not only for audio tracks (American English, español mexicano, français du France, and so on) but also for Adaptive Bitrate initiative and maybe for channel multiplexing. I’ll attach herein precisely the files whose A/V tracks are muxed to one file.

IMG_8999-SDTV-ldish.ts: This file represents the possibility of muxing many video tracks (that represent different NTSC SDTV resolutions), not just multiple audio tracks that represent different languages.
TRANSPONDER5023824842-SDTV-ldish.ts: This file proves multiplexing —in this case 4 A/V streams— is also possible. Please notice video track #2 (or #1 if track count begins with 0) actually has video, however it doesn’t show anything, just pure black, because it’s technically audio only (which is referred as audio track 2 or 1 [if your player also displays it starting with 0]).
TRANSPONDER5023824843-SDTV-ldish.ts: This file also shows stream scrambling is possible. That scrambling accounts for running the “tsp” command (from TSDuck) that scrambles the stream likely at AES-128 standard with certain key. The only one video stream that remains perfectly clear is the video stream #5 (or video stream #4 if your player starts the track counting from 0), which tells the users to insert a smartcard (notice I actually made the warning image, which isn’t related to professional TV providers).

Also, is it true that DISH Network (DIRECTV and other pay TV providers) effectively mux many master streams into one transponder (which likely translates to .ts files if downloaded to another server)?

If you consider this thread contains “facts” that aren’t proved yet or seem reckless to the forum, I gladly welcome any comments to this thread.
Warm greetings.
Attached Files
]]> DVB / IPTV Cedr00m4kv1x https://forum.videohelp.com/threads/420734-ts-file-multiplexing-practical-uses-when-having-multiple-A-V-tracks