Playing a Transport Stream file with stubs segments messes up whole duration and can't seek

mpv Information

mpv --version
mpv v0.40.0 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
libplacebo version: v7.349.0
FFmpeg version: 7.1.1
FFmpeg library versions:
   libavcodec      61.19.101
   libavdevice     61.3.100
   libavfilter     10.4.100
   libavformat     61.7.100
   libavutil       59.39.100
   libswresample   5.3.100
   libswscale      8.3.100

Other Information

- macOS version: macOS 15.4 (24E248)
- Source of mpv: brew.sh
- Latest known working version: unknown
- Issue started after the following happened: create ts file with stubs

Reproduction Steps

Create a sample Transport Stream file where one of the segments is a stub like this:

byte[] transportStreamStub =
            {
    0x47, 0x40, 0x00, 0x1A, 0x00, 0x00, 0xB0, 0x0D, 0x00, 0x01, 0xC1, 0x00, 0x00, 0x00, 0x01, 0xF0, 0x00, 0x2A, 0xB1, 0x04, 0xB2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0x47, 0x41, 0x00, 0x30, 0x72, 0x40, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0xC0, 0x00, 0x3F, 0x84, 0x80, 0x05, 0x21, 0x06, 0xC3, 0xCF, 0x45, 0xFF, 0xF1, 0x4C, 0x40, 0x01, 0x7F, 0xFC, 0x00, 0xD0, 0x00, 0x07,
    0xFF, 0xF1, 0x4C, 0x40, 0x01, 0x7F, 0xFC, 0x00, 0xD0, 0x00, 0x07, 0xFF, 0xF1, 0x4C, 0x40, 0x01, 0x7F, 0xFC, 0x00, 0xD0, 0x00, 0x07, 0xFF, 0xF1, 0x4C, 0x40, 0x01, 0x7F, 0xFC, 0x00, 0xD0, 0x00, 0x07, 0xFF, 0xF1, 0x4C,
    0x40, 0x01, 0x7F, 0xFC, 0x00, 0xD0, 0x00, 0x07
};

And place it in the middle of a Twitch stream, like this:

$ cat 598.ts stub.ts 600.ts > sample.ts

The size of each of those files is.

7874756 bytes
376 bytes
7991128 bytes

sample.ts has 15866260 bytes in it.

The original issue is discussed here: https://github.com/lay295/TwitchDownloader/issues/1344

Expected Behavior

display correctly file duration and playback correctly all the way through.

Actual Behavior

Each segment is 10 seconds. The first one play correctly, but when reached the third, audio and video get out of sync. Also the duration of sample.ts changes from 00:00:30 to -24:55:08. Also trying to seek in the middle of the stub just ends the playback.

Log File

output.txt.zip

Sample Files

sample.ts.zip

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

Reproduce sample.ts by concatenating 598.ts, stub.ts, and 600.ts, then run mpv with the attached sample and output log. Investigate Transport Stream handling for duration, timestamp synchronization, and seeking. Done means the file reports the correct duration, remains synchronized through the stub, and seeking across it continues playback.