It turns out that the media mochitests' indexed ogg file has an invalid index. This was caused by a bug in OggIndex's decoder. I'd previously found the bug in Firefox's decoder, which is very similar to OggIndex's, but I must have forgotten to make the same fix to OggIndex. Firefox's index-decoding code would detect that the index was corrupt, and discard the index, so we weren't actually testing the index decoding. I've fixed the file's index and pushed it to TryServer, and our tests still pass, while exercising the index decoding.
Created attachment 479290 [details] [diff] [review] Patch: Fix index in bug516323.indexed.ogv
Assignee: nobody → chris
Status: NEW → RESOLVED
Last Resolved: 8 years ago
Resolution: --- → FIXED
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