This enables metadata to be independently retrieved by eBay’s internal applications or be archived for analytics purposes. Metadata includes a video’s original dimensions, size, bitrate, durations and sorts, user-provided details and peripheral things like storage object IDs. We chunk the uploaded video and store the chunked bytes as individual objects in storage with corresponding metadata in a database store.
#How to compress pictures ebay drivers
The key drivers for choosing it wereresilience and high performance. It is a generic object store and is used for use cases other than images and videos as well. Uploaded bytes are stored in Binary Large Object (BLOB) Storage which was built in-house to run on low cost commodity hardware and provide random reads at very low latencies, with an extremely high durability (~10 - 24 probability for losing an object). Current upload SLAs are aligned with search indexing. The REEL API currently accepts seller-provided metadata, like tags and a short description, along with a link to previously uploaded video thumbnail images. They are only available for consumption by eBay applications.
Upload APIs require OAuthtokens for access and are not public yet. We currently use Kafka as our message bus, which carries Video IDs for videos once they are persisted in the backend. Service application is an orchestrator between storage and metadata services, and serves as a video “upload complete” event producer for the async transcoding of video. This can save sellers extra bandwidth and time to re-upload larger files from scratch again. If the video fails to upload due to network fault, resumable protocol lets sellers resume an incomplete upload at a future time, a feature that can be useful for large files.
HTTP servers are public-facing services that are responsible for receiving video uploads through resumable APIs. REEL relies on multiple levels of caching for faster delivery. Transcoded bytes are statically stored and retrieved during the video’s playback using DASH protocol.
This triggers an async processing pipeline, where the uploaded video is further transcoded into a smaller resolution but high perceptual quality. Once the whole video is received on the server end, it is broken into smaller chunks and stored into our backend storage. The app will internally use REEL APIs to upload the videos to our platform. Then, they upload the video stored on their local device to the app. To start the process of uploading a video, the seller signs into the eBay Motors App and starts to create an item listing for sale. Video Delivery pipeline to enable fast streaming on players running on heterogeneous devices across the world.Video Processing pipeline for producing smaller sized versions of the source video with similar perceived quality.Video Upload pipeline for ingesting large video files into the system using REEL’s resumable APIs.REEL’s architecture is comprised of the following in order of user/system interaction: REEL Architecture and In-House Technologies Building on a standard stack with existing tools for deployments and configurations makes it easier for development teams and operations to monitor and evolve. Efficient monitoring and visualization for a system’s state and performance.Smooth playback across multiple devices and unreliable networks.Appropriate Service Level Agreement (SLAs) for ecommerce specific use cases of short-duration (~1 minute) videos.Any loss of data or missing chunks for a big video file can spoil the experience. This will require transcoding the original video into smaller but perceptually good quality videos. Resilient video storage at a very low storage cost.
#How to compress pictures ebay download
High throughput with low latency for both upload and download services.Through video, sellers will have an easier time capturing the condition and usage of the car.īuilding a video platform that can scale across eBay’s 1.5 billion listings will provide the following: The feature allows sellers to upload one or more videos - in addition to adding photos of the car they are listing - which improves the shopping experience. Today, eBay announced a new video platform called REEL, which will integrate videos into the eBay Motors App. You only get one shot at a first impression – being able to show off your listing in an engaging video can improve buyer confidence.
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