Workaround for broken(?) m4a files from ffmpeg, was Re: [PATCH] Output AAC as M4A for iTunes with metadata tags

richard richard at
Mon Apr 11 16:13:25 EDT 2011

On Mon Apr 11 12:24 Simon Nash wrote:

> In the DecoderConfigDescriptor within the esds atom, there's
> a field named avgBitrate (average bit rate).  In the file that doesn't
> play, this field is set to zero.  In the file that does play, this 
> field is set to a non-zero value.

That ties in with what EasyTag was reporting. It gave an incorrect
bitrate. I referred to it earlier. See last paragraph here:

> I have sent Richard a .mp4 file created in this way for him to try.

That won't play in the Marantz as its a video file. I need a m4a file to

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