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AAC (MPEG-4) Low Complexity Object - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000233.shtml
Common name: AAC-LC. A specific type of AAC audio compression. The specification states that the MPEG-4 AAC Low Complexity object is the counterpart to the MPEG-2 AAC Low Complexity Profile, with some adjustments. The MPEG-2 low complexity profile forbids the use of prediction (predictors provide an estimate of the sample value or data …
#113 (AAC - Audio object type 23 is not supported) – …
https://ffmpeg.org/trac/ffmpeg/ticket/113
Description. ffmpeg AAC codec (decoder) doesn't seem to support AAC-LD and libfaad or libfaad2 (which is documented to support AAC-LD) is no longer an audio codec option. So there is no way to decode AAC-LD format audio track anymore. However, vlc on windows seems to play the file. ffmpeg build from git snapshot of a few days ago ( ffmpeg-HEAD ...
what does AAC object type.....mean?
https://hydrogenaud.io/index.php?topic=26413.0
what does AAC object type.....mean? Reply #2 – 2004-08-21 06:50:41. Some are mostly related to sound quality, but there are other, more specific profiles. LC - low complexity - became the "default" profile. It has high quality and is relatively easy on CPU consumption for both encoding and decoding.
Advanced Audio Coding (MPEG-4) - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000114.shtml
AAC_MP4 compression is a further refinement of AAC_MP2. AAC_MP4 is an object-based coding standard; decoders for AAC_MP2 may not be able to read AAC_MP4. The specification defines various object types and profiles; see Notes. Video-capable iPods and iPhones specify video files for which the audio appears to be audio-object-limited rather than ...
ffmpeg - Audio object type 3 is not supported - Stack …
https://stackoverflow.com/questions/19135719/audio-object-type-3-is-not-supported
First of, Object type 3 is AAC-SSR (It is defined in ISO 14496-3), And to the best of my knowledge it is not supported in the ffmpeg deocoder. As for the h.264 error, The 'unspecified size' message refers to the fact the decoder could not be configured with the video resolution.
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