Guess Steam mp4 trailer url if not found

[supersmo]

I have verified that:

• These changes work, by building the extension and testing.
• That the changes comply with the rules indicated in the repository.
• Pull request is targeting master branch.

Pull request is not targeting the master branch since it is not the current working branch.
See: #706 (comment)

This changes the behavior for Steam trailer on demand streaming. Steam recently stopped returning the mp4 URL of trailers in the appdetails response.

• If the mp4 url is available in the cached appdetails file then that is used.
• Otherwise an attempt is made to guess the URL of the mp4.
• A simple test is made to see if the URL is available and if it is then that is used to display the trailer.

This is a temporary solution. A more robust solution would be to get a video player to play the m3u8 or mpd urls of the trailers.

See: #705

[justin-delano]

can you provide a .pext for testing? I've run into the same issue!

[joyrider3774]

i compiled and tried this, but when i right click on a game a choose to download video trailers it does not find any, however it does find the microtrailers it seems

edit:

it seems microtrailers could always be downloaded, i just patched a local version of mine to use yt-dlp.exe as well to download steam trailers based on youtube download and the dash h264 url and that seems to work fine but a lot slower for downloading the trailers

also my comment above is bogus steam micro trailers always still downloaded.

@supersmo it seems your branch is only adding guesses for streaming the videos but not for downloading them. the location where it downloads things is here https://github.com/darklinkpower/PlayniteExtensionsCollection/blob/emlCrashFix2025/source/Generic/ExtraMetadataLoader/Services/VideosDownloader.cs#L85C15-L85C30

[supersmo]

@justin-delano I've now published a .pext file here: https://github.com/supersmo/PlayniteExtensionsCollection/releases/tag/v1.82.1

@joyrider3774 True, I have never used the video download feature so I only looked into fixing the streaming part. I will try to find the time to look into it this weekend.

[justin-delano]

@supersmo thank you so much, this worked for me!

[darklinkpower]

Merged, thanks a lot for the contribution