Media transcoding pipeline

Design a media-transcoding + storage pipeline for a VOD platform. Constraints: creators upload large master files (multi-GB, hours long), each must be transcoded into an adaptive-bitrate ladder (several resolutions/bitrates) and packaged (HLS/DASH segments), transcoding is CPU/GPU-heavy and bursty, a long video must not block others, and finished renditions are stored cheaply and served via CDN. Cover ingest, the transcode pipeline, and packaging/storage.