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FFmpeg/tests/ref/seek/acodec-pcm-f32le
Gyan Doshi c1340f3439 avformat/riffenc: don't force WAVEFORMATEXTENSIBLE for flt/dbl LPCM
2c2a167ca7 forced WAVEFORMATEXTENSIBLE for all LPCM streams with greater
than 16 bits per sample. However, WAVEFORMATEX allows IEEE Float samples
or any depth where raw depth == coded depth, see Remarks section at
https://learn.microsoft.com/en-us/windows/win32/api/mmreg/ns-mmreg-waveformatex
and samples M1F1-float32-AFsp, M1F1-float64-AFsp at
https://www.mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Samples.html

There are hardware devices and likely software players requiring float samples
that fail to qualify files with WAVEFORMATEXTENSIBLE headers.
2023-12-28 11:11:33 +05:30

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ret: 0 st:-1 flags:0 ts:-1.000000
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ret: 0 st:-1 flags:1 ts: 1.894167
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ret: 0 st: 0 flags:0 ts: 0.788345
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ret: 0 st: 0 flags:1 ts:-0.317506
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 58 size: 4096
ret: 0 st:-1 flags:0 ts: 2.576668
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ret: 0 st:-1 flags:1 ts: 1.470835
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ret: 0 st: 0 flags:0 ts: 0.365011
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ret: 0 st: 0 flags:1 ts:-0.740839
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ret: 0 st:-1 flags:0 ts: 2.153336
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ret: 0 st:-1 flags:1 ts: 1.047503
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ret: 0 st: 0 flags:0 ts:-0.058322
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ret: 0 st: 0 flags:1 ts: 2.835828
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ret: 0 st:-1 flags:0 ts: 1.730004
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ret: 0 st:-1 flags:1 ts: 0.624171
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ret: 0 st: 0 flags:0 ts:-0.481655
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ret: 0 st: 0 flags:1 ts: 2.412494
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ret: 0 st:-1 flags:0 ts: 1.306672
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ret: 0 st:-1 flags:1 ts: 0.200839
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ret: 0 st: 0 flags:0 ts:-0.904989
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ret: 0 st: 0 flags:1 ts: 1.989184
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ret: 0 st:-1 flags:0 ts: 0.883340
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ret: 0 st:-1 flags:1 ts:-0.222493
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ret: 0 st: 0 flags:0 ts: 2.671678
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ret: 0 st: 0 flags:1 ts: 1.565850
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ret: 0 st:-1 flags:0 ts: 0.460008
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ret: 0 st:-1 flags:1 ts:-0.645825
ret: 0 st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos: 58 size: 4096