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Netflix / photon

Photon is a Java implementation of the Interoperable Master Format (IMF) standard. IMF is a SMPTE standard whose core constraints are defined in the specification st2067-2:2013
Apache License 2.0
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EssenceDescriptors check. #169

Closed SuperFish2016 closed 7 years ago

SuperFish2016 commented 7 years ago

Hello, There was a error happened when I use photon to check the CPL file. "ERROR-This Composition represented by the ID b08d310d-25c1-486e-8dd8-25088fe15bd3 is invalid since the VirtualTrack represented by ID df1b8c5b-4353-4957-ae8d-82e0e94e6ebb is not homogeneous based on a comparison of the EssenceDescriptors referenced by its resources in the Essence Descriptor List, the EssenceDescriptors corresponding to this VirtualTrack in the EssenceDescriptorList are as follows... "

The ID df1b8c5b-4353-4957-ae8d-82e0e94e6ebb is \<TrackId> in MainAudioSequence. If there were two Resources in the MainAudioSequence, The ERRORs are always appearing and one audio resource always is OK.

SuperFish2016 commented 7 years ago

Is it better to use "SourceEncoding" or "TrackFileId" to check the EssenceDescriptor as all "Resources" in the MianAudioSequence have same TrackId.

svenkatrav commented 7 years ago

Based on the error description it looks like the two audio resources in the track are failing homogeneity check i.e. essence descriptors of these two resources do not match. Homogeniety check happens only when there are more than one resource in a track. Could you please attach complete error description and also if possible provide CPL with the issue.

SuperFish2016 commented 7 years ago

@svenkatrav Thank you for your explanation. It is the second resouce issue.