Fixed video recording problem on desktop. #30114
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23rd
reviewed
Dec 16, 2025
| if (s.empty()) { | ||
| // empty means "default" — keep it as the first option if nothing else | ||
| // but avoid duplicate empties | ||
| if (std::find(candidates.begin(), candidates.end(), std::string()) == candidates.end()) |
23rd
reviewed
Dec 16, 2025
| // Build candidate device IDs: original first, then simple heuristics to | ||
| // prefer non-IR / RGB variants (common naming pattern: "... I" vs "... R", | ||
| // or "IR" tokens). These heuristics are intentionally conservative. | ||
| const std::string base = startDeviceId.toStdString(); |
Contributor
Please report back when you test, most likely the code has to be moved to lib_webrtc, that's where the logic of creating the camera list resides |
Author
Sorry I am replying really late, I am not able to build the telegram on my machine because I am really confused about getting the API access to build and test the program! I tried to submit my application but there was an error which I don't know. can you please help me with that??? |
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Description
This PR improves webcam initialization on Linux when starting video message recording.
Some USB webcams (notably devices exposing both RGB and IR entries, e.g. Lenovo 510) take longer to initialize or expose multiple device names (… I / … R). Telegram Desktop may time out or select the IR entry first, causing “Could not start video recording. Please check your camera.” even though the camera works correctly.
Changes
Results:
NOT TESTED YET