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  "path": "/t/having-trouble-getting-transparent-backgrounds-in-chatgpt-images/1380143?page=3#post_49",
  "publishedAt": "2026-05-10T20:21:19.000Z",
  "site": "https://community.openai.com",
  "tags": [
    "https://developer.apple.com/documentation/avfoundation/using-hevc-video-with-alpha",
    "https://developer.chrome.com/blog/alpha-transparency-in-chrome-video",
    "MDN Web Docs",
    "Web video codec guide - Media | MDN"
  ],
  "textContent": "I don’t have video/MP4 samples to share. My testing here was only for still-image transparency.\n\nFor video, transparency depends on the codec/container workflow supporting an alpha channel, so I wouldn’t assume ordinary MP4 output has the same behavior.\n\nRelevant docs/context that you can check:\n\nhttps://developer.apple.com/documentation/avfoundation/using-hevc-video-with-alpha\n\nhttps://developer.chrome.com/blog/alpha-transparency-in-chrome-video\n\nMDN Web Docs\n\n### Web video codec guide - Media | MDN\n\nThis guide introduces the video codecs you're most likely to encounter or consider using on the web, summaries of their capabilities and any compatibility and utility concerns, and advice to help you choose the right codec for your project's video.",
  "title": "Having trouble getting transparent backgrounds in ChatGPT images"
}