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Please see the documentation: https://xiph.org/ogg/doc/framing.html I would encourage you to use random serial numbers, as intended, also, as any downstream consumers of your files will face limitations similar to the ones you are facing if they want to do anything more with them. But before you go too far down the route of changing the serial numbers, can you tell us what software is

On 2018-11-15 11:01 a.m., Vitaly Zdanevich wrote: > Maybe you know some existing code snippet or library for Javascript for altering serial and crc? I don't, sorry. > Just now I compiled your quick script to wasm but the size is 28K, > I think about simple correct solution for that case. If you strip out the fprintf()s for progress and error reporting, it might get smaller. More

I found how to build CRC32 table for Ogg in JS, if anyone interested: function _makeCRC32Table() { // From https://stackoverflow.com/questions/53438815/hot-to-build-crc32-table-for-ogg const polynomial = 79764919; const mask = 2147483648; const CRCTable = new Uint32Array(256); for (let i = 256; i--;) { let char = i << 24; for (let j = 8; j--;) {

Thank you again for your help, now I am thinking about much simpler solution - because all my Oggs comes from the the one source looks like I can alter serial and crc32 at their hardcoded positions. Please see this screenshot https://giphy.com/gifs/9AIe7ksYBwiYQoLVv9/fullscreen with serials 11111111 and 22222222- it will be correct approach? And can you please say me from what region I need to

AWS Polly produces Oggs with hardcoded serial numbers as zeros. 16.11.2018, 17:57, "Timothy B. Terriberry" <tterribe at xiph.org>: > Please see the documentation: https://xiph.org/ogg/doc/framing.html > > I would encourage you to use random serial numbers, as intended, also, > as any downstream consumers of your files will face limitations similar > to the ones you

I faced with problem about CRC32 calculation, I see that lookup table is different here https://github.com/rillian/rogg/blob/master/rogg.c#L196 end for example here https://stackoverflow.com/a/18639975/1879101 - JS code on this page for building the table produces the same result. I think that generating the table is better than having hardcoded one - for security against the case when somebody