[FFmpeg-user] converting broadcast wavs strips xml metadata

Dave Rice dave at dericed.com
Sun Apr 19 21:18:59 CEST 2015

Hi Pete,

> On Apr 19, 2015, at 11:34 AM, Pete Coward <pete at byta.fm> wrote:
> ffmpeg supports decoding and encoding of broadcast wavs (bwf format)
> but in my tests it strips the bext chunk from the input broadcast wav
> when copying it, so not outputting a valid bwf file. is this a bug or
> is it a configuration issue? i would be grateful for any advice.
> input file has a bext chunk in aXML format
> output file has no bext chunk

The aXML chunk is intended to contain any valid XML document. The bext chunk is a rigid list of fixed length strings and dates. Having a bext chunk within an aXML chunk would be very unusual.

The ffmpeg wav muxer supports bext but does not (yet) support the aXML chunk.

> i am using bwfmetaedit (http://bwfmetaedit.sourceforge.net) to verify bext data.

wooo, someone uses that.
Dave Rice

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