Getting MEDIA_SOURCE_OPERATION_THREW Error

[bhargavnaidu22]

Have you read the FAQ and checked for duplicate open issues?
✔ Yes

If the problem is related to FairPlay, have you read the tutorial?
N/A

What version of Shaka Player are you using?
📌 "shaka-player": "4.11.0"

Can you reproduce the issue with our latest release version?
✔ Yes

Can you reproduce the issue with the latest code from main?
✔ Yes

Are you using the demo app or your own custom app?
🛠️ Custom App

If custom app, can you reproduce the issue using our demo app?
Yes

What browser and OS are you using?
🖥 Browser: Chrome 132.0.0.0
🖥 OS: WebOS

For embedded devices (smart TVs, etc.), what model and firmware version are you using?
📺 Device: LG WebOS TV
📜 Firmware Version: Varies

What are the manifest and license server URIs?
🎥 Manifest URI:

https://stream-us-east-1.getpublica.com/playlist.m3u8?network_id=4608&live=0&avod=1
(Let me know if you prefer to share this privately.)

📜 License Server URI: (If applicable)

What configuration are you using? What is the output of player.getNonDefaultConfiguration()?
📌 Configuration:

{
"streaming": {
"bufferBehind": 30,
"retryParameters": {
"maxAttempts": 5,
"baseDelay": 1000
}
}
}
(Provide the actual configuration output from your console if different.)

What did you do?

Loaded an HLS stream with Shaka Player 4.11.0
Tried playing on LG WebOS / Vizio Smart TV
Encountered the following error:
Shaka Error MEDIA.MEDIA_SOURCE_OPERATION_THREW
(NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource':
The type provided ('binary/octet-stream; codecs="avc1.64001f"') is unsupported.,
The mediaSource_ status was open expected 'open')
What did you expect to happen?
✅ The video should play without issues.

What actually happened?
❌ Playback fails with the error:
MEDIA.MEDIA_SOURCE_OPERATION_THREW (NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource')

Are you planning to send a PR to fix it?
🤔 Not at the moment.

Possible Causes & Fixes
🔹 Codec Issue:

avc1.64001f may not be supported on your device.
Try changing the codec to a more compatible one (avc1.4d001e or avc1.42E01E).
Run MediaSource.isTypeSupported('video/mp4; codecs="avc1.64001f"') in the browser console to check compatibility.
🔹 Incorrect mediaSource_ State:

The MediaSource might not be in the correct open state when adding a buffer.
Ensure MediaSource.readyState === "open" before calling addSourceBuffer().
🔹 HLS Playlist Issue:

Check if the .m3u8 file provides alternate codec options.
Test the stream in Shaka Player Demo App to confirm if it's a player-specific issue.
🔹 Workarounds to Try:

Use the hls.js library instead of Shaka for testing.
Transcode the content using FFmpeg to a more widely supported codec.
Upgrade to the latest Shaka Player version if available.

[avelad]

Loaded an HLS stream with Shaka Player 4.11.0
Tried playing on LG WebOS / Vizio Smart TV
Encountered the following error:
Shaka Error MEDIA.MEDIA_SOURCE_OPERATION_THREW
(NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource':
The type provided ('binary/octet-stream; codecs="avc1.64001f"') is unsupported.,
The mediaSource_ status was open expected 'open')

binary/octet-stream; codecs="avc1.64001f"?? binary/octet-stream? sure? It should be video/mp4 for example....

[bhargavnaidu22]

This is the URL that we put in the player
https://stream-us-east-1.getpublica.com/playlist.m3u8?network_id=11090&live=0&avod=1&cb=[CACHEBUSTER]&u=https://ssai.gumgum.com/gs/stream/master/invincible/content.m3u8?stream_url=https%3A%2F%2Fcontent.uplynk.com%2F2ec6135d52a84a10ba125982da509d2f.m3u8& &did=[DID]&app_bundle=[APP_BUNDLE]&app_name=[APP_NAME]&app_domain=[APP_DOMAIN]&app_category=[APP_CATEGORY]&app_store_url=[APP_STORE_URL]&preroll=1&preroll_duration=120&ad_breaks=00:00:00,00:01:00,00:04:00&pod_duration=[POD_DURATION]&content_genre=[CONTENT_GENRE]&content_language=[CONTENT_LANGUAGE]&content_title=[CONTENT_TITLE]&ua=[%UA%]&ip=[IP]&device_type=[DEVICE_TYPE]&gdpr=[GDPR]&ifa_type=[IFA_TYPE]&is_lat=[LIMITED_AD_TRACKING]&player_height=[HEIGHT]&player_width=[WIDTH]&content_keywords=[CONTENT_KEYWORDS]&min_ad_duration=6&max_ad_duration=120&content_rating=[CONTENT_RATING]
The above URL is the from Publica after stiching SSAI ads when pass our HLS stream to Publica.
We get the error mentioned in this thread when we use this ad inserted URL. Please suggest what we need to look into and what needs to be done to resolve this issue

[bhargavnaidu22]

Hey @avelad, Can you please look into the above-mentioned Issue at the earliest.

[avelad]

Sorry I don't have WebOS to test :(

[bhargavnaidu22]

It can be verified on normal browsers as well