On Fri, Oct 6, 2023 at 10:02 AM Derek Buitenhuis
wrote:
> On 10/5/2023 6:32 PM, Lynne wrote:
> > I counted 2048 with af-convert. Are you referring to qaac?
>
> Referring to Apple's own documents, which have 2112 plastered everywhere.
>
And another Fraunhofer implementation is padding 1600 sample
On 10/5/2023 6:32 PM, Lynne wrote:
> I counted 2048 with af-convert. Are you referring to qaac?
Referring to Apple's own documents, which have 2112 plastered everywhere.
- Derek
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Oct 5, 2023, 14:24 by derek.buitenh...@gmail.com:
> On 10/3/2023 5:07 AM, Lynne wrote:
>
>> Despite this being a standard MDCT-based codec with a frame size of 1024,
>> hence a delay of 1024 samples at the start, all major encoders, excluding
>> faac and FFmpeg, use 2048 samples of padding.
>>
>
>
> On Oct 4, 2023, at 7:37 PM, Lynne wrote:
>
> 2048 is just more widely encountered. I'm posting these patches
> to get an opinion:
> - do we cut nothing at all (currently)
> - do we cut 1024 (required by the standard/algorithm, and currently what our
> AAC ENcoder outputs)
> - do we cut 2
On 10/3/2023 5:07 AM, Lynne wrote:
> Despite this being a standard MDCT-based codec with a frame size of 1024,
> hence a delay of 1024 samples at the start, all major encoders, excluding
> faac and FFmpeg, use 2048 samples of padding.
Apple's uses 2112.
- Derek
___
Oct 3, 2023, 18:39 by andreas.rheinha...@outlook.com:
> Lynne:
>
>> The FFmpeg encoder will be modified to also output 2048 samples of
>> padding at the start, to make it in line with other encoders.
>>
>
> Once again: What is the advantage? Doing what lots of other codecs do is
> not a real advan
Lynne:
> The FFmpeg encoder will be modified to also output 2048 samples of
> padding at the start, to make it in line with other encoders.
Once again: What is the advantage? Doing what lots of other codecs do is
not a real advantage.
>
> +{ "padding", "Override the padding at the start of a
For some reason, this was never set, which meant all **raw** AAC in ADTS
streams, except faac, had extra samples at the start.
Despite this being a standard MDCT-based codec with a frame size of 1024,
hence a delay of 1024 samples at the start, all major encoders, excluding
faac and FFmpeg, use 20
