signalapp / signalapp/Signal-Android
Re-encoding video on send makes some (AV1) videos needlessly larger
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- Dominant language
- Kotlin
- Stars
- 29.4k
- Forks
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Description
Guidelines
- I have searched open and closed issues for duplicates
- I am submitting a bug report for existing functionality that does not work as intended
- This isn't a feature request or a discussion topic
Bug description
Previous issue https://github.com/signalapp/Signal-Android/issues/13511
I tried to send AV1 encoded 2MB 1080p video, but Signal re-encodes it into 22MB H264 720p. There's no way to get around that needless re-encoding? I tried "Send File" and "HD media toggle", it's all the same.
Screenshots
No response
Device
Samsung S24
Android version
16
Signal version
8.20.4
Link to debug log
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No file, test, or entry point is named. First reproduce the report with a 2MB 1080p AV1 video on Android, comparing normal send, Send File, and the HD media toggle. Done means identifying why the video becomes 22MB H264 720p and confirming that the unnecessary re-encoding is avoided.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, kotlin
- Domain
- audio-video-rtc, mobile-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100