VOD product rendering controller
A product rendering controller (PRC) manages the overall process of creating video-on-demand (VOD) assets or products from source assets that are obtained from a wide variety of different content sources (e.g., web-based sources) and which are in a wide variety of different native media formats. The source assets are converted to video transport streams such as an MPEG transport stream and transcoded as necessary to create the VOD products. The PRC determines the VOD products that need to be generated, pre-caches data that is to be incorporated into VOD products, and selects the pool of video product generators that is to be used to convert the source assets to VOD products.
1 . A method of managing a process for converting source assets from a native format to a video transport stream that conforms to a prescribed protocol, comprising:
identifying a plurality of source assets that are each to be processed by a respective one of a plurality of pools of video product generators that create sequential frames of video products in said video transport stream from source video frames of the source assets, each pool capable of converting a source asset from its native format to said video transport stream;
for each of the source assets, selecting one of the plurality of pools for processing a respective one of the source assets based at least in part on at least one attribute of the respective source asset and at least one characteristic of the selected pool; and
for each of the source assets, requesting the selected pool to generate the respective video transport streams;
wherein the at least one characteristic of the selected pool includes a processing capability of the selected pool that is independent of the format type of said video transport stream; and
wherein the at least one characteristic of the selected pool is different than a processing capability characteristic of a different pool.
2 . The method of claim 1 , further comprising classifying each of the source assets by a content type, wherein the at least one attribute of each of the source assets corresponds to the content type, the content types being defined by a nature and complexity of the process that will be needed to transform the source assets into video transport streams.
3 . The method of claim 2 , wherein selecting one of the plurality of video product generator pools includes, for each of the source assets, selecting a video product generator pool based on the content type of the respective source asset.
4 . The method of claim 3 , wherein selecting a video product generator pool based on the content type of the respective source asset includes selecting a video product generator pool that has a processing capability that is better suited to the content type of the respective source asset than the processing capability characteristic of the different pool.
5 . The method of claim 1 , further comprising causing pre-established values for global and source asset specific parameters to be applied during processing of the source assets by the video product generators.
6 . The method of claim 1 , further comprising pre-fetching and caching selected source assets and communicating the selected source assets to the video product generator pools that are to respectively process the selected source assets when the selected source assets are to be processed so that processing delays are avoided.
7 . The method of claim 6 , further comprising scheduling the pre-fetching and caching of selected source assets at specified periodic intervals to thereby regularly update the selected source assets.
8 . The method of claim 7 , wherein the specified periodic intervals are different for different selected source assets.
9 . The method of claim 1 , wherein identifying the plurality of source assets to be processed includes receiving a prioritized on-demand request for generating one or more video products from a system that delivers personalized channels to client devices.
10 . The method of claim 1 , further comprising assigning expiration times and time-to-live values to selected video products.
11 . The method of claim 1 , further comprising prioritizing processing by the video product generator pools of selected source assets over other source assets.
12 . The method of claim 1 , wherein the video transport stream is an MPEG video transport stream.