Audio does not work for videos that were recently uploaded to RedGifs

[jdemph1971]

Describe the bug
Audio does work for videos that were uploaded to RedGifs a long time ago. Audio does not work for videos that were recently uploaded to RedGifs. Note that it is the date that it was uploaded to (and encoded by) RedGifs that is important, not the date that it was posted to Reddit. In other words, you can have a video that was uploaded to RedGifs a long time ago but was recently (re-)posted to Reddit and that video will successfully play the audio. According to https://www.reddit.com/r/help/comments/18hl9n2/audio_in_redgifs_videos_is_no_longer_supported_on/ this is because RedGifs updated the encoding they use. This same issue happens in the official Reddit app. This issue does not happen in Narwhal, and did not happen in Apollo.

To Reproduce
Steps to reproduce the behavior:

1. Go to a post that has a video (that has audio) from RedGifs that was uploaded to RedGifs recently. There are many in the various NSFW subreddits. I did not want to post a specific link here since the content would be NSFW. If you want me to post example NSFW links that have this issue and I will do so.
2. Play the video.
3. The video will be silent.

Expected behavior
The video should successfully play the audio even for the new encoding that RedGifs now apparently uses.

Winston (please complete the following information):

• Version Beta v1.1.5
• Build 392

Device (please complete the following information):

• Device: iPhone Xs Max
• OS: iOS 17.5.1

[linear]

WIN-161 Audio does not work for videos that were recently uploaded to RedGifs

[robigan]

The reason for why RedGifs works on Narwhal and used to work on Apollo is/was because they properly interact with the RedGifs API to get the source video. Right now, the video returned by redgifs is the "video thumbnail" returned by the web page's metadata, apps properly wishing to embed RedGifs should either embed their own token, or request a temporary token at runtime. See https://api.redgifs.com/docs/index.html