3314 (FLVHeaderIntegrityFailed) when loading a video

Question

[ Problem ]
I’ve created my own packaging application based on the code in the ’packaging content’ documentation. The output from this packager is just the encrypted video (i.e. no .metadata file). I then modified the sample AIR client to read the metadata from the video asset:
//var urlRequest : URLRequest = new URLRequest(videoFile.text + ".metadata");
var urlRequest : URLRequest = new URLRequest(videoFile.text);
When i run the client i get the following error:
Starts to get video metadata at Tue Dec 15 08:59:17 GMT+0000 2009
ArgumentError: Error #3314: FLV header integrity check failed.
Which is raised in the handleMetadata function when the following line of code is executed:
metadata= new DRMContentData(results);
[ Solution ]
A DRMContentData object is a data structure that represents the Flash Access metadata of a protected content.  In the FLV/F4V spec, the Flash Access metadata is represented as an Additional Header of the file.
To answer your question about why you’re getting an FLV header integrity check failure, you’re seeing this because the blob of data you’re trying to read in as a Flash Access metadata is not really a Flash Access metadata.  You are in fact trying to shoe-horn an entire FLV/F4V into a DRMContentData object.  When an integrity check is done with the blob you pass in, it fails, since the data being passed in does not look like an Additional Header representing the Flash Access metadata.
To work around this, you have 2 options:
- Go the separate .metadata route (read my previous post)
- If you want to allow full downloads of your content, and are happy with using AIR, you can use the "preloadEmbeddedData()" API to create the DRMContentData object.  The input parameter to preloadEmbeddedDatat() is an entire FLV/F4V.

Answer 1

[ Problem ]
I’ve created my own packaging application based on the code in the ’packaging content’ documentation. The output from this packager is just the encrypted video (i.e. no .metadata file). I then modified the sample AIR client to read the metadata from the video asset:
//var urlRequest : URLRequest = new URLRequest(videoFile.text + ".metadata");
var urlRequest : URLRequest = new URLRequest(videoFile.text);
When i run the client i get the following error:
Starts to get video metadata at Tue Dec 15 08:59:17 GMT+0000 2009
ArgumentError: Error #3314: FLV header integrity check failed.
Which is raised in the handleMetadata function when the following line of code is executed:
metadata= new DRMContentData(results);
[ Solution ]
A DRMContentData object is a data structure that represents the Flash Access metadata of a protected content.  In the FLV/F4V spec, the Flash Access metadata is represented as an Additional Header of the file.
To answer your question about why you’re getting an FLV header integrity check failure, you’re seeing this because the blob of data you’re trying to read in as a Flash Access metadata is not really a Flash Access metadata.  You are in fact trying to shoe-horn an entire FLV/F4V into a DRMContentData object.  When an integrity check is done with the blob you pass in, it fails, since the data being passed in does not look like an Additional Header representing the Flash Access metadata.
To work around this, you have 2 options:
- Go the separate .metadata route (read my previous post)
- If you want to allow full downloads of your content, and are happy with using AIR, you can use the "preloadEmbeddedData()" API to create the DRMContentData object.  The input parameter to preloadEmbeddedDatat() is an entire FLV/F4V.