[FFmpeg-devel] [PATCH] AAC: type puns for 16 bit floating point rounding

Robert Swain robert.swain
Tue Dec 9 23:58:20 CET 2008

2008/12/9 Guillaume POIRIER <poirierg at gmail.com>:
> Hello,
> On Tue, Dec 9, 2008 at 7:27 PM, Robert Swain <robert.swain at gmail.com> wrote:
>> 2008/12/9 Guillaume POIRIER <poirierg at gmail.com>:
>> Grab:
>> http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_IEC_14496-4_2004_Conformance_Testing/audio_conformance/mpeg4audio-conformance/compressedMp4/am01_48.mp4
>> or some other am* file from there, though not am02* as there's a known
>> bug with those at the moment.
> These samples are too short, so I'm afraid that I'm measuring ffmpeg's
> startup time rather than AAC decoding (it takes about .2 seconds to
> decode the file, from launch of FFmpeg to exit).
> Would it work with any iTunes-encoded AAC file? If not, maybe you
> should direct me to a bigger sample from Mplayer's samples
> collections...

It needs to be an AAC Main profile file. iTunes files are LC AAC as
are most other AAC streams in the wild. If I find a longer sample,
I'll let you know. In the mean time, thanks for trying. :)


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