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LSDRT6 Migrate mp3 to wav
Collection:
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Issue:
| Title |
IS21 Migration of mp3 to wav |
| Detailed description | A large collection of mp3-files (20 Tbytes - 175.000 files) needs to be migrated to wav. Because of the large amount of data we need automatic QA algorithms to ensure that migration went well. |
| Scalability Challenge |
Large amounts of data (20 Tbytes - 175.000 files) - requires both much I/O and CPU for the migration part as well as I/O and CPU for the QA part. Must be carried out on a distributed platform to be realistic. |
| Issue champion | Bjarne Andersen (SB) |
| Other interested parties |
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| Possible Solution approaches |
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| Context | |
| Lessons Learned | |
| Training Needs | |
| Datasets | mp3 (128kbit) with Danish Radio broadcasts |
| Solutions | SO2 xcorrSound QA audio comparison tool SO4 Audio mp3 to wav Migration and QA Workflow |
Evaluation
| Objectives | This is about scaleability and robustness. 175.000 files need to be migrated and automatically checked content-wise and format-wise |
| Success criteria | We will have a workflow that converts from mp3 to wav. Checks the migrated files for wav-conformance and checks the actual content by comparing the content of the mp3s and the corresponding wavs to ensure that nothing went wrong |
| Automatic measures | 1. Process 20 files per hour per node |
| Manual assessment | 1. If any of the migrated files does not pass the QA-test they should actually have failed the migration. |
| Actual evaluations | links to acutual evaluations of this Issue/Scenario |