[FFmpeg-devel] [PATCH] lavf/movenc.c: Set sgpd and sbgp atoms to represent decoder delay for AAC.

[Derek Buitenhuis]

On 8/4/2017 7:46 PM, Sasi Inguva wrote:
> According to https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFAppenG/QTFFAppenG.html
> 
> Signed-off-by: Sasi Inguva <isasi at google.com>
> ---
>  libavformat/movenc.c                | 70 +++++++++++++++++++++----------------
>  tests/ref/fate/adtstoasc_ticket3715 |  4 +--
>  tests/ref/fate/copy-psp             |  4 +--
>  tests/ref/fate/movenc               | 12 +++----
>  4 files changed, 49 insertions(+), 41 deletions(-)

Is there a reference for ISOBMFF too? Because this changes mp4 output as well mov.

> diff --git a/tests/ref/fate/movenc b/tests/ref/fate/movenc
> index 09e603aeb7..47bcf9d515 100644
> --- a/tests/ref/fate/movenc
> +++ b/tests/ref/fate/movenc
> @@ -1,18 +1,18 @@
>  write_data len 36, time nopts, type header atom ftyp
> -write_data len 2335, time nopts, type header atom -
> +write_data len 2389, time nopts, type header atom -
>  write_data len 788, time 1000000, type sync atom moof
>  write_data len 110, time nopts, type trailer atom -
> -214242e9c7c93171d2f47f5b47776559 3269 non-empty-moov
> +17a37691eba8b858cf15e60aa9a7dbf7 3323 non-empty-moov
>  write_data len 36, time nopts, type header atom ftyp
> -write_data len 2667, time nopts, type header atom -
> +write_data len 2721, time nopts, type header atom -
>  write_data len 908, time 966667, type sync atom moof
>  write_data len 110, time nopts, type trailer atom -
> -44467d568a3cc38d414fd8ed4b2a968f 3721 non-empty-moov-elst
> +0026ffe059c06c592021f972bf2c5e79 3775 non-empty-moov-elst
>  write_data len 36, time nopts, type header atom ftyp
> -write_data len 2575, time nopts, type header atom -
> +write_data len 2629, time nopts, type header atom -
>  write_data len 908, time 1000000, type sync atom moof
>  write_data len 110, time nopts, type trailer atom -
> -de22b98a3885f9b4b83cdd48ff46aeb9 3629 non-empty-moov-no-elst
> +c184e168ac1e5bb3d9c70e580ab6179c 3683 non-empty-moov-no-elst
>  write_data len 20, time nopts, type header atom ftyp
>  write_data len 1171, time nopts, type header atom -
>  write_data len 728, time 0, type sync atom moof
> 

Can you confirm what exactly changes in these fragmented MP4 API tests?

- Derek