Janne Grunau <[email protected]> writes:
> the raw audio muxer have separate names for the sample formats.
>
> -f f32le $FILE at the end of the command will output little endian float
> samples.
Nice, -f s24le seems to work too. But if I also want a proper .au (or
.wav) header, I'll have to add that myself (e.g, using sox should work,
I guess)?
> Or you could add an upsample to 96kHz filter, avconv should be smart enough
> not to use it when the sampling rate changes to 96kHz.
Is that -filter 'aformat=sample_rates=96000' ? Gives me an interesting
error, though...
$ ./avconv -i Master\ Audio\ 5.0\ 96khz.dts -y -filter
'aformat=sample_rates=96000' out.wav
avconv version v10_alpha2-146-g274f5c9, Copyright (c) 2000-2014 the Libav
developers
built on Apr 24 2014 10:16:35 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu9)
[dca @ 0x23aa0c0] DCA XLL: number of xll samples (1024) != number of core
samples (512)
resampling required.
[dts @ 0x2399080] max_analyze_duration reached
[dts @ 0x2399080] Estimating duration from bitrate, this may be inaccurate
Input #0, dts, from '/data/nisse/libav-dev-shared/Master Audio 5.0 96khz.dts':
Duration: 00:00:27.30, start: 0.000000, bitrate: 1535 kb/s
Stream #0.0: Audio: dca (DTS-HD MA), 48000 Hz, 5.0, fltp, 1536 kb/s
Output #0, wav, to 'out.wav':
Metadata:
ISFT : Lavf55.12.0
Stream #0.0: Audio: pcm_s16le, 96000 Hz, 5.0, s16, 7680 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (dca -> pcm_s16le)
Press ctrl-c to stop encoding
[dca @ 0x23aa0c0] DCA XLL: number of xll samples (1024) != number of core
samples (512)
resampling required.
Input stream #0:0 frame changed from rate:48000 fmt:fltp ch:5 chl:5.0 to
rate:96000 fmt:fltp ch:5 chl:5.0
*** Error in `./avconv': corrupted double-linked list: 0x00000000023ad2e0 ***
^C
BTW, what would it take to enable wav output in other sample formats,
configured via -sample_fmt or -filter aformat=sample_fmts=...? I notice
that ff_codec_wav_tags (definied in libavformat/riff.c) includes a tag
for, e.g, AV_CODEC_ID_PCM_S24LE, but I don't understand how it fits
together.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
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