#3729: FFMPEG should show warnings when FLAC encoder produce non-subset stream
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Reporter: Vika | Owner:
Apelsinova | Status: new
Type: enhancement | Component: avcodec
Priority: wish | Resolution:
Version: git-master | Blocked By:
Keywords: flac | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by Vika Apelsinova):
FLAC project specifies a subset of itself FLAC format as the Subset
format. The purpose of this is to ensure that any streams encoded
according to the Subset are truly "streamable", meaning that a decoder
that cannot seek within the stream can still pick up in the middle of the
stream and start decoding. It also makes hardware decoder implementations
more practical by limiting the encoding parameters such that decoder
buffer sizes and other resource requirements can be easily determined.
Reference FLAC encoder generates Subset streams by default unless the "--
lax" command-line option is used.
There are hardware decoders that can't decode non-subset stream
(especially streams with sample size in bits > 24). There are also
software players that can't decode non-subset stream (e.g. please see
https://code.google.com/p/android/issues/detail?id=35348).
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Ticket URL: <https://trac.ffmpeg.org/ticket/3729#comment:2>
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