Playback stops when AES-128 MPEG-TS and AES-128 fMP4 assets are mixed within variant media playlists

### What version of HLS.js are you using?

hls.js version 1.5.11

### What browser (including version) are you using?

Firefox Mac (Intel) 154.0

### What OS (including version) are you using?

MacOS (Intel) Sequoia 15.7.9

### Test stream

I may not be able to provide a publicly accessible test stream because the media and encryption keys cannot be shared publicly.  I can provide representative working and non-working multivariant and media playlists. If needed, I can also provide additional packaging details required to reproduce the streams.

### Configuration

```JavaScript
{
  "autoStartLoad": true,
  "startPosition": -1,
  "debug": false,
  "capLevelOnFPSDrop": false,
  "capLevelToPlayerSize": false,
  "ignoreDevicePixelRatio": false,
  "preferManagedMediaSource": true,
  "initialLiveManifestSize": 1,
  "maxBufferLength": 30,
  "backBufferLength": null,
  "frontBufferFlushThreshold": null,
  "maxBufferSize": 60000000,
  "maxBufferHole": 0.1,
  "highBufferWatchdogPeriod": 2,
  "nudgeOffset": 0.1,
  "nudgeMaxRetry": 3,
  "maxFragLookUpTolerance": 0.25,
  "liveSyncDurationCount": 3,
  "liveMaxLatencyDurationCount": null,
  "maxLiveSyncPlaybackRate": 1,
  "liveDurationInfinity": false,
  "liveBackBufferLength": null,
  "maxMaxBufferLength": 600,
  "enableWorker": true,
  "workerPath": null,
  "enableSoftwareAES": true,
  "startFragPrefetch": false,
  "fpsDroppedMonitoringPeriod": 5000,
  "fpsDroppedMonitoringThreshold": 0.2,
  "appendErrorMaxRetry": 3,
  "stretchShortVideoTrack": false,
  "maxAudioFramesDrift": 1,
  "forceKeyFrameOnDiscontinuity": true,
  "abrEwmaFastLive": 3,
  "abrEwmaSlowLive": 9,
  "abrEwmaFastVoD": 3,
  "abrEwmaSlowVoD": 9,
  "abrEwmaDefaultEstimate": 500000,
  "abrEwmaDefaultEstimateMax": 5000000,
  "abrBandWidthFactor": 0.95,
  "abrBandWidthUpFactor": 0.7,
  "abrMaxWithRealBitrate": false,
  "maxStarvationDelay": 4,
  "maxLoadingDelay": 4,
  "minAutoBitrate": 0,
  "emeEnabled": false,
  "drmSystems": {},
  "drmSystemOptions": {},
  "testBandwidth": true,
  "progressive": false,
  "lowLatencyMode": true,
  "enableDateRangeMetadataCues": true,
  "enableEmsgMetadataCues": true,
  "enableID3MetadataCues": true,
  "useMediaCapabilities": true,
  "certLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": 8000,
      "maxLoadTimeMs": 20000,
      "timeoutRetry": null,
      "errorRetry": null
    }
  },
  "keyLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": 8000,
      "maxLoadTimeMs": 20000,
      "timeoutRetry": {
        "maxNumRetry": 1,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 20000,
        "backoff": "linear"
      },
      "errorRetry": {
        "maxNumRetry": 8,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 20000,
        "backoff": "linear"
      }
    }
  },
  "manifestLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": null,
      "maxLoadTimeMs": 20000,
      "timeoutRetry": {
        "maxNumRetry": 2,
        "retryDelayMs": 0,
        "maxRetryDelayMs": 0
      },
      "errorRetry": {
        "maxNumRetry": 1,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 8000
      }
    }
  },
  "playlistLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": 10000,
      "maxLoadTimeMs": 20000,
      "timeoutRetry": {
        "maxNumRetry": 2,
        "retryDelayMs": 0,
        "maxRetryDelayMs": 0
      },
      "errorRetry": {
        "maxNumRetry": 2,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 8000
      }
    }
  },
  "fragLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": 10000,
      "maxLoadTimeMs": 120000,
      "timeoutRetry": {
        "maxNumRetry": 4,
        "retryDelayMs": 0,
        "maxRetryDelayMs": 0
      },
      "errorRetry": {
        "maxNumRetry": 6,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 8000
      }
    }
  },
  "steeringManifestLoadPolicy": {
    "default": {
      "maxTimeToFirstByteMs": 10000,
      "maxLoadTimeMs": 20000,
      "timeoutRetry": {
        "maxNumRetry": 2,
        "retryDelayMs": 0,
        "maxRetryDelayMs": 0
      },
      "errorRetry": {
        "maxNumRetry": 1,
        "retryDelayMs": 1000,
        "maxRetryDelayMs": 8000
      }
    }
  },
  "manifestLoadingTimeOut": 10000,
  "manifestLoadingMaxRetry": 1,
  "manifestLoadingRetryDelay": 1000,
  "manifestLoadingMaxRetryTimeout": 64000,
  "levelLoadingTimeOut": 10000,
  "levelLoadingMaxRetry": 4,
  "levelLoadingRetryDelay": 1000,
  "levelLoadingMaxRetryTimeout": 64000,
  "fragLoadingTimeOut": 20000,
  "fragLoadingMaxRetry": 6,
  "fragLoadingRetryDelay": 1000,
  "fragLoadingMaxRetryTimeout": 64000,
  "cueHandler": {},
  "enableWebVTT": true,
  "enableIMSC1": true,
  "enableCEA708Captions": true,
  "captionsTextTrack1Label": "English",
  "captionsTextTrack1LanguageCode": "en",
  "captionsTextTrack2Label": "Spanish",
  "captionsTextTrack2LanguageCode": "es",
  "captionsTextTrack3Label": "Unknown CC",
  "captionsTextTrack3LanguageCode": "",
  "captionsTextTrack4Label": "Unknown CC",
  "captionsTextTrack4LanguageCode": "",
  "renderTextTracksNatively": true
}
```

### Additional player setup steps

The presentation is VOD and has a multivariant playlist containing five bitrate variants.

Each variant media playlist contains a chronological sequence of VOD assets. Every variant uses the same asset order and changes container format at the same asset boundaries.

The affected media playlists combine:

* MPEG-TS media segments encrypted using `METHOD=AES-128`
* fMP4 media segments encrypted using `METHOD=AES-128`
* An encrypted fMP4 initialization section referenced by `EXT-X-MAP`
* `EXT-X-KEY` placed before the applicable encrypted `EXT-X-MAP`
* `EXT-X-DISCONTINUITY` at each asset/container boundary

The following configurations work:

1. All assets in every variant media playlist are AES-128-encrypted MPEG-TS.
2. All assets in every variant media playlist are AES-128-encrypted fMP4.

For the all-fMP4 configuration, both the fMP4 media segments and the initialization section referenced by `EXT-X-MAP` are AES-128 encrypted. The applicable `EXT-X-KEY` appears before `EXT-X-MAP`. This configuration plays correctly in HLS.js.

Playback fails only when the variant media playlists contain both AES-128 MPEG-TS and AES-128 fMP4 assets. The failure occurs regardless of which container format appears first.

### Checklist

- [x] The issue observed is not already reported by searching on Github under https://github.com/video-dev/hls.js/issues
- [x] The issue occurs in the stable client (latest release) on https://hlsjs.video-dev.org/demo and not just on my page
- [x] The issue occurs in the latest client (main branch) on https://hlsjs-dev.video-dev.org/demo and not just on my page
- [x] The stream has correct Access-Control-Allow-Origin headers (CORS)
- [x] There are no network errors such as 404s in the browser console when trying to play the stream

### Steps to reproduce

I found related issues, but none appears to cover this exact case:

* #1510 — MPEG-TS and muxed fMP4 in the same HLS presentation
* #5195 — freezing when a multivariant presentation contains fMP4 and TS variants
* #2259 — AES-128 support for fMP4/ISOBMFF
* #4933 — AES-128-encrypted fMP4 playback and encrypted initialization-section handling

Unlike #5195, the container transition in this case occurs chronologically inside each variant media playlist. It is not caused by switching from a TS variant to an fMP4 variant.

### Steps to reproduce

1. Create a VOD multivariant playlist containing five bitrate variants.
2. For each bitrate, create a media playlist containing at least two sequential VOD assets.
3. Package one asset as MPEG-TS and encrypt its complete media segments using HLS `METHOD=AES-128`.
4. Package the other asset as fMP4 and encrypt both its initialization section and media segments using HLS `METHOD=AES-128`.
5. In each variant media playlist, place the applicable `EXT-X-KEY` before the encrypted `EXT-X-MAP`.
6. Mark the asset/container transition with `EXT-X-DISCONTINUITY`.
7. Load the multivariant playlist in HLS.js and begin playback.
8. Repeat with the fMP4 asset first and the MPEG-TS asset second.

Control tests:

1. Create the same presentation using only AES-128 MPEG-TS assets. Playback completes normally.
2. Create the same presentation using only AES-128 fMP4 assets. Playback completes normally.
3. Create the presentation using both containers. Playback stops after the first asset.

### Expected behaviour

Playback should continue across an `EXT-X-DISCONTINUITY` when the next asset changes from AES-128 MPEG-TS to AES-128 fMP4, or from AES-128 fMP4 to AES-128 MPEG-TS.

HLS.js should reset or replace any container-specific demuxer, transmuxer, initialization-segment, decryption, timestamp, and buffering state required for the next asset.

### What actually happened?

Only the first VOD asset in the mixed-container media playlist plays.

When playback reaches the first transition between MPEG-TS and fMP4, it does not continue into the second asset. The result is the same in both directions:

* AES-128 MPEG-TS followed by AES-128 fMP4
* AES-128 fMP4 followed by AES-128 MPEG-TS

The same underlying assets play successfully when the complete presentation contains only MPEG-TS or only fMP4.

### Representative playlists

#### Multivariant playlist

```m3u8
#EXTM3U
#EXT-X-VERSION:6
#EXT-X-STREAM-INF:BANDWIDTH=2592576,RESOLUTION=1280x720,CODECS="avc1.4d001f,mp4a.40.2"
http://192.168.118.129/appapi/v1/vodmedia/5e2b0220-7abf-11ef-a8a7-239b4eabb0df/1280x/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1667968,RESOLUTION=960x540,CODECS="avc1.4d001f,mp4a.40.2"
http://192.168.118.129/appapi/v1/vodmedia/5e2b0220-7abf-11ef-a8a7-239b4eabb0df/960x/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=976168,RESOLUTION=640x360,CODECS="avc1.4d001f,mp4a.40.2"
http://192.168.118.129/appapi/v1/vodmedia/5e2b0220-7abf-11ef-a8a7-239b4eabb0df/640x/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=621848,RESOLUTION=480x270,CODECS="avc1.4d001f,mp4a.40.2"
http://192.168.118.129/appapi/v1/vodmedia/5e2b0220-7abf-11ef-a8a7-239b4eabb0df/480x/index.m3u8
```

#### Working media playlist: AES-128 fMP4 only

```m3u8
#EXTM3U
#EXT-X-VERSION:6
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-TARGETDURATION:11
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-DISCONTINUITY-SEQUENCE:0
#EXT-X-CUE-OUT:30.000
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/811ed060-40da-11f1-91e4-4d5d1500a384",IV=0x338ceefb449abaf629b367d3cf7d1292
#EXT-X-MAP:URI="http://192.168.118.129/appapi/v1/segment/1280x811ed06040da11f191e44d5d1500a384x/1280x811ed06040da11f191e44d5d1500a384x.m4s"
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:11.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:11.000+00:00"
#EXTINF:10.010,
http://192.168.118.129/appapi/v1/segment/1280x811ed06040da11f191e44d5d1500a384x/1280x811ed06040da11f191e44d5d1500a384x0000.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:22.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:22.000+00:00"
#EXTINF:10.010,
http://192.168.118.129/appapi/v1/segment/1280x811ed06040da11f191e44d5d1500a384x/1280x811ed06040da11f191e44d5d1500a384x0001.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:33.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:33.000+00:00"
#EXTINF:10.010,
http://192.168.118.129/appapi/v1/segment/1280x811ed06040da11f191e44d5d1500a384x/1280x811ed06040da11f191e44d5d1500a384x0002.m4s
#EXT-X-CUE-IN
#EXT-X-DISCONTINUITY
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/5e2b0220-7abf-11ef-a8a7-239b4eabb0df",IV=0x800b820bf3624a3fb7aa25f7a7b38bc7
#EXT-X-MAP:URI="http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx.m4s"
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:43.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:00:43.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0000.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:53.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:00:53.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0001.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:03.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:03.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0002.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:13.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:13.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0003.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:23.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:23.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0004.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:33.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:33.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0005.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:43.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:43.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0006.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:44.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:44.000+00:00"
#EXTINF:0.830,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0007.m4s
#EXT-X-CUE-OUT:30.000
#EXT-X-DISCONTINUITY
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/7bef40e0-40da-11f1-83bf-87e1ba602778",IV=0x9e0029e8132de414ca3341d25bb9f9ed
#EXT-X-MAP:URI="http://192.168.118.129/appapi/v1/segment/1280x7bef40e040da11f183bf87e1ba602778x/1280x7bef40e040da11f183bf87e1ba602778x.m4s"
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:54.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:01:54.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x7bef40e040da11f183bf87e1ba602778x/1280x7bef40e040da11f183bf87e1ba602778x0000.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:02:04.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:02:04.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x7bef40e040da11f183bf87e1ba602778x/1280x7bef40e040da11f183bf87e1ba602778x0001.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:02:14.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:02:14.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x7bef40e040da11f183bf87e1ba602778x/1280x7bef40e040da11f183bf87e1ba602778x0002.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:02:15.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:02:15.000+00:00"
#EXTINF:0.040,
http://192.168.118.129/appapi/v1/segment/1280x7bef40e040da11f183bf87e1ba602778x/1280x7bef40e040da11f183bf87e1ba602778x0003.m4s
#EXT-X-CUE-IN
#EXT-X-ENDLIST
```

#### Failing media playlist: MPEG-TS followed by fMP4

```m3u8
#EXTM3U
#EXT-X-VERSION:6
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-TARGETDURATION:11
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-DISCONTINUITY-SEQUENCE:0
#EXT-X-CUE-OUT:30.000
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/ba886e00-e7f3-11eb-a656-e7f5b1035698",IV=0x8dc3182970979e3e6b8a05009b4d45ac
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:11.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:11.000+00:00"
#EXTINF:10.800,
http://192.168.118.129/appapi/v1/segment/1280xba886e00e7f311eba656e7f5b1035698x/1280xba886e00e7f311eba656e7f5b1035698x0.ts
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:21.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:21.000+00:00"
#EXTINF:9.600,
http://192.168.118.129/appapi/v1/segment/1280xba886e00e7f311eba656e7f5b1035698x/1280xba886e00e7f311eba656e7f5b1035698x1.ts
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:31.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:31.000+00:00"
#EXTINF:9.600,
http://192.168.118.129/appapi/v1/segment/1280xba886e00e7f311eba656e7f5b1035698x/1280xba886e00e7f311eba656e7f5b1035698x2.ts
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:31.000+00:00
#EXT-X-DATERANGE:START-DATE="2026-08-22T20:00:31.000+00:00"
#EXTINF:0.000,
http://192.168.118.129/appapi/v1/segment/1280xba886e00e7f311eba656e7f5b1035698x/1280xba886e00e7f311eba656e7f5b1035698x3.ts
#EXT-X-CUE-IN
#EXT-X-DISCONTINUITY
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/5e2b0220-7abf-11ef-a8a7-239b4eabb0df",IV=0x800b820bf3624a3fb7aa25f7a7b38bc7
#EXT-X-MAP:URI="http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx.m4s"
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:41.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:00:41.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0000.m4s?
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:00:51.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:00:51.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0001.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:01.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:01.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0002.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:11.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:11.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0003.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:21.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:21.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0004.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:31.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:31.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0005.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:41.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:41.000+00:00"
#EXTINF:10.000,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0006.m4s
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:42.000+00:00
#EXT-X-DATERANGE:ID="10000",START-DATE="2026-08-22T20:01:42.000+00:00"
#EXTINF:0.830,
http://192.168.118.129/appapi/v1/segment/1280x5e2b02207abf11efa8a7239b4eabb0dfx/1280x5e2b02207abf11efa8a7239b4eabb0dfx0007.m4s
#EXT-X-CUE-OUT:30.000
#EXT-X-DISCONTINUITY
#EXT-X-KEY:METHOD=AES-128,URI="http://192.168.118.129/appapi/v1/hlskeypayload/5540b1f0-2cd2-11ee-a71d-fd02cbc1ae8b",IV=0x1a140acbcabb4807be0674326efd5c57
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:01:53.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:01:53.000+00:00"
#EXTINF:10.010,
http://192.168.118.129/appapi/v1/segment/1280x5540b1f02cd211eea71dfd02cbc1ae8bx/1280x5540b1f02cd211eea71dfd02cbc1ae8bx0.ts
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:02:04.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:02:04.000+00:00"
#EXTINF:10.010,
http://192.168.118.129/appapi/v1/segment/1280x5540b1f02cd211eea71dfd02cbc1ae8bx/1280x5540b1f02cd211eea71dfd02cbc1ae8bx1.ts
#EXT-X-PROGRAM-DATE-TIME:2026-08-22T20:02:14.000+00:00
#EXT-X-DATERANGE:ID="20000",START-DATE="2026-08-22T20:02:14.000+00:00"
#EXTINF:9.980,
http://192.168.118.129/appapi/v1/segment/1280x5540b1f02cd211eea71dfd02cbc1ae8bx/1280x5540b1f02cd211eea71dfd02cbc1ae8bx2.ts
#EXT-X-CUE-IN
#EXT-X-ENDLIST
```

Sensitive hostnames, tokens, and key URIs have been replaced consistently where necessary. Tag ordering and playlist structure are unchanged.


### Console output

```shell
[HTTP/1 204 No Content 22ms]
[warn] > Ignoring invalid DATERANGE tag: "START-DATE="2026-08-22T20:00:11.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "START-DATE="2026-08-22T20:00:21.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "START-DATE="2026-08-22T20:00:31.000+00:00"" 2 [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:00:51.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:01.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:11.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:21.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:31.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:41.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "10000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="10000",START-DATE="2026-08-22T20:01:42.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "20000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="20000",START-DATE="2026-08-22T20:02:04.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[warn] > DATERANGE tag attribute: "START-DATE" does not match for tags with ID: "20000" [app.js:30561:18](http://192.168.118.129:8443/js/app.js)
[warn] > Ignoring invalid DATERANGE tag: "ID="20000",START-DATE="2026-08-22T20:02:14.000+00:00"" [app.js:33468:24](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Level 1 loaded [0,14][part-14--1], cc [0, 2] duration:130.83 [app.js:57091:10](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: WAITING_LEVEL->IDLE [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Loading key for initSegment of [0-14], level 1 [app.js:39575:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: IDLE->KEY_LOADING [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Loading fragment initSegment cc: 0 of [0-14] level: 1, target: 30 [app.js:39635:10](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: KEY_LOADING->FRAG_LOADING [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
XHR 
GET
http://192.168.118.129/appapi/v1/segment/640x5e2b02207abf11efa8a7239b4eabb0dfx/640x5e2b02207abf11efa8a7239b4eabb0dfx.m4s
[HTTP/1.1 200 OK 12ms]
XHR 
OPTIONS
http://192.168.118.129/appapi/v1/segment/640x5e2b02207abf11efa8a7239b4eabb0dfx/640x5e2b02207abf11efa8a7239b4eabb0dfx.m4s
[HTTP/1 204 No Content 10ms]
[log] > [stream-controller]: FRAG_LOADING->IDLE [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Loading fragment 4 cc: 1 of [0-14] level: 1, target: 30.023 [app.js:39635:10](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: IDLE->FRAG_LOADING [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
XHR 
GET
http://192.168.118.129/appapi/v1/segment/640x5e2b02207abf11efa8a7239b4eabb0dfx/640x5e2b02207abf11efa8a7239b4eabb0dfx0000.m4s
[HTTP/1.1 200 OK 14ms]
XHR 
OPTIONS
http://192.168.118.129/appapi/v1/segment/640x5e2b02207abf11efa8a7239b4eabb0dfx/640x5e2b02207abf11efa8a7239b4eabb0dfx0000.m4s
[HTTP/1 204 No Content 10ms]
[log] > [transmuxer-interface, main]: Starting new transmux session for sn: 4 p: -1 level: 1 id: 1
        discontinuity: false
        trackSwitch: true
        contiguous: false
        accurateTimeOffset: true
        timeOffset: 30
        initSegmentChange: true [app.js:45531:14](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: FRAG_LOADING->PARSING [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Loaded fragment 4 of level 1 [app.js:39369:14](http://192.168.118.129:8443/js/app.js)
[log] > [transmuxer.ts]: Flushed fragment 4 of level 1 [app.js:44865:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: Init audiovideo buffer, container:video/mp4, codecs[level/parsed]=[avc1.4d001f,mp4a.40.2/mp4a.40.2,avc1.4D481F] [app.js:57641:12](http://192.168.118.129:8443/js/app.js)
[warn] > [buffer-operation-queue]: Exception executing "audiovideo" SourceBuffer operation: Error: Attempting to append to the audiovideo SourceBuffer, but it does not exist [app.js:47705:16](http://192.168.118.129:8443/js/app.js)
[warn] > [buffer-controller] Failed 3/3 times to append segment in "audiovideo" sourceBuffer [app.js:48199:16](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: PARSING->ERROR [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [audio-stream-controller]: STOPPED->ERROR [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > stopLoad [app.js:58060:12](http://192.168.118.129:8443/js/app.js)
[log] > [stream-controller]: ERROR->STOPPED [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [audio-stream-controller]: ERROR->STOPPED [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
[log] > [subtitle-stream-controller]: IDLE->STOPPED [app.js:40398:12](http://192.168.118.129:8443/js/app.js)
```

### Chrome media internals output

```shell
Not available
```

Navigation Menu

Uh oh!

Playback stops when AES-128 MPEG-TS and AES-128 fMP4 assets are mixed within variant media playlists #8002

What version of HLS.js are you using?

What browser (including version) are you using?

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Checklist

Steps to reproduce

Steps to reproduce

Expected behaviour

What actually happened?

Representative playlists

Multivariant playlist

Working media playlist: AES-128 fMP4 only

Failing media playlist: MPEG-TS followed by fMP4

Console output

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Uh oh!

Playback stops when AES-128 MPEG-TS and AES-128 fMP4 assets are mixed within variant media playlists #8002

Description

What version of HLS.js are you using?

What browser (including version) are you using?

What OS (including version) are you using?

Test stream

Configuration

Additional player setup steps

Checklist

Steps to reproduce

Steps to reproduce

Expected behaviour

What actually happened?

Representative playlists

Multivariant playlist

Working media playlist: AES-128 fMP4 only

Failing media playlist: MPEG-TS followed by fMP4

Console output

Chrome media internals output

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions