TS is a video format: it stores data in the TS format. FLAC is a audio format that applies lossless compression to PCM audio, preserving the original waveform exactly while reducing file size by 40-60% versus WAV. This extracts the audio stream from the video container, discarding the video track. The audio track is decoded and re-encoded (or stream-copied if the codec matches) while the video frames are discarded. Converting between these two formats is common when the source application does not support FLAC natively or when the target platform only accepts FLAC. 1converter processes this conversion server-side using open-source tools. Files are transferred over HTTPS, converted on secure cloud servers, and automatically deleted after 24 hours.