I guess this could be used to remux the broken files that are spitted by the MediaRecorder API, which have missing metadata that prevents from seeking and thus

I guess this could be used to remux the broken files that are spitted by the MediaRecorder API, which have missing metadata that prevents from seeking and thus far has been ignored / sweeped away in Chrome [1], Firefox [2], and even the standard itself [3], which ignored in its design the basic fact that encoding any file should include a "closing" stage (where metadata is written) before yielding it as a finished file. [1]: https://bugs.chromium.org/p/chromium/issues/detail?id=642012 https://bugs.chromium.org/p/chromium/issues/detail?id=642012 [2]: https://bugzilla.mozilla.org/show_bug.cgi?id=1283464 https://bugzilla.mozilla.org/show_bug.cgi?id=1283464 [3]: https://github.com/w3c/mediacapture-record/issues/119 https://github.com/w3c/mediacapture-record/issues/119