[FFmpeg-devel] [PATCH] lavdevice: Add VideoToolbox output device.
Thilo Borgmann
thilo.borgmann at mail.de
Mon Jun 8 02:24:02 EEST 2020
Am 08.06.20 um 00:35 schrieb Nicolas George:
> Thilo Borgmann (12020-06-08):
>> Not sure if you don't mix it with Video.... screw me...
>
> Oh, that's why you re-sent the patch. I could not spot the difference.
>
>> For Audio, I cannot find another device handling more than one format in one device.
>> I'd appreciate a better way to do it than having N-devices...
>
> alsa_enc.c, at least:
>
> Output #0, alsa, to 'default':
> Metadata:
> encoder : Lavf58.42.100
> Stream #0:0: Audio: pcm_u8, 44100 Hz, mono, u8, 352 kb/s (default)
>
> Output #0, alsa, to 'default':
> Metadata:
> encoder : Lavf58.42.100
> Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s (default)
>
> Output #0, alsa, to 'default':
> Metadata:
> encoder : Lavf58.42.100
> Stream #0:0: Audio: pcm_f32le, 44100 Hz, mono, flt, 1411 kb/s (default)
I guess I see how it does that.
How do you avoid the auto-scaler to be scaling to alsa's default format of pcm_s16 on the command line?
-Thilo
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