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 a source asset from a native format to a particular destination format in a video transport stream that conforms to a prescribed video coding protocol for encoding a plurality of frames of video, the method comprising:
identifying a plurality of source assets that are each to be processed by a respective pool of video product generators that create sequential video frames of video products in a video transport stream from source video frames of the source assets, each respective pool capable of converting a source asset from its native format to the particular destination format;
for each of the content assets, selecting one of the plurality pools for processing a respective one of the source assets based at least in part on at least one format-independent image attribute of the respective source asset and at least one characteristic of the selected video product generator pool; and
for each of the source assets, requesting the selected video product generator pool to generate the respective video transport streams.
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 best matches the content type of the respective source asset.
5. The method of claim 1 , wherein the at least one characteristic of the selected video product generator includes a processing capability of the selected video product generator.
6. 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.
7. 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.
8. The method of claim 7 , further comprising scheduling the pre-fetching and caching of selected source assets at specified periodic intervals to thereby regularly update the selected source assets.
9. The method of claim 8 , wherein the specified periodic intervals are different for different selected source assets.
10. 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.
11. The method of claim 1 , further comprising assigning expiration times and time-to-live values to selected video products.
12. The method of claim 1 , further comprising prioritizing processing by the video product generator pools of selected source assets over other source assets.
13. The method of claim 1 , wherein the video transport stream is an MPEG video transport stream.
14. An apparatus comprising:
at least one processor;
at least one memory operatively coupled to the at least one processor;
computer program code resident in storage and loadable into said memory, so as to cause said at least one processor to:
receive a request to receive a first VOD product in a video transport stream in a particular output video format;
select a video product generator pool from among a plurality of different video product generator pools, each differently configured relative to one another for processing a first source asset from which the first VOD product is to be transcoded from a particular source format into the particular output video format comprising an encoded plurality of frames of video conforming to a prescribed video coding protocol, wherein the selection is based at least in part on at least one format-independent attribute of the first source asset and at least one characteristic of the selected video product generator pool; and
request that the selected video product generator pool process the first source asset to create the first VOD product.
15. The apparatus of claim 14 , wherein the computer program code, when loaded into said memory, causes said at least one processor to:
receive a request to receive a second VOD product in a video transport stream;
select a second video product generator pool from among one of the plurality of video product generator pools for processing a second source asset from which the second VOD product is to be created, wherein the selection is based at least in part on at least one attribute of the second source asset and at least one characteristic of the selected video product generator pool; and
request that the second video product generator pool process the second source asset to create the second VOD product.
16. The apparatus of claim 14 , wherein the computer program code, when loaded into said memory, causes said at least one processor to classify first source asset by content type, wherein the at least one attribute of the source assets corresponds to the content type, the content type being defined by a nature and complexity of the process that will be needed to transform the first source assets into a video transport stream.
17. The apparatus of claim 16 , wherein the at least one characteristic of the selected video product generator includes a processing capability of the selected video product generator.
18. The apparatus of claim 16 , wherein the computer program code, when loaded into said memory, causes said at least one processor to select a video product generator pool based on the content type of the first source asset.
19. The apparatus of claim 18 , wherein the computer program code, when loaded into said memory, causes said at least one processor select a video product generator pool that has a processing capability that best matches the content type of the first source asset.
20. The method of claim 14 , wherein the computer program code, when loaded into said memory, causes said at least one processor to cause pre-established values for global and source asset specific parameters to be applied during processing of the first source asset by the selected video product generator pool.