[FFmpeg-user] Post problem: export long wav files (incorrect/limited length)

Paul B Mahol onemda at gmail.com
Tue Jan 1 13:10:28 CET 2013

On 11/19/12, Stas Fomin <stas-fomin at yandex.ru> wrote:
> 19.11.2012, 17:42, "Paul B Mahol" <onemda at gmail.com>:
>> On 11/19/12, Stas Fomin <stas-fomin at yandex.ru> wrote:
>>>  And some facts:
>>>  * Audacity support long WAVs (import/export), 9hours -- OK.
>> And ffmpeg reports such files as w64 and not wav?
> Thank you very much, the mistery solved!
> Yes, they are in W64 format.
>> Do you need w64 muxer?
> Yes, this will be usefull, to automatically export long lossless audio
> for further processing (from videos or AVISynth scripts/projects).

The w64 muxer is in git and will be in next release.
Please test it and report you findings: like do you need extra chunks like bext
or metadata supported too.

There is also rf64 extension for wav, do you want it too?

> Now I mux w64 with video with AVISynth/RaWavSource,
> and export w64 as:
>   AVS/AVI -> FFMPEG | SOX -> W64
> but I will be glad to forgot forever about 'oldschool 2GB wav' in my
> toolchain and move to limitless w64.

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