[vlc-devel] [PATCH] chromecast: transcode audio to MP3 320 kbps instead of 96 kbps
thomas at gllm.fr
Mon Aug 12 08:57:23 CEST 2019
On Sat, Aug 10, 2019, at 09:37, ValdikSS wrote:
> On 09.08.2019 10:07, Thomas Guillem wrote:
> > Yes, in the GetAcodecOption() method, you have access to the i_quality enum.
> > You shoud enable 320kbps only for CONVERSION_QUALITY_HIGH, and maybe 160 for MEDIUM.
> Francois, Thomas, note this is 320 kbit/s, not kbyte/s.
Then 320 for Medium and High, 96 or 120 for low.
> Chromecast is used only on LAN, it doesn't work over the Internet.
> Every wireless network is capable of streaming such relatively low
> bitrate, and I honestly see no point using lower bitrates since they
> have almost no effect on CPU load.
The quality settings is for CPU load and network bandwidth too. Lot of people have really shitty wifi.
> Are you sure lower bitrates are needed? I, as a user, expect audio to
> be the best quality possible.
> Also note that currently VLC transcodes MP3 to MP3 again, due to a bug
> #22650: https://trac.videolan.org/vlc/ticket/22650
> > On Fri, Aug 9, 2019, at 08:56, Francois Cartegnie wrote:
> >> Le 08/08/2019 à 21:33, ValdikSS via vlc-devel a écrit :
> >>> Chromecast transcoding code uses either Vorbis or MP3 for audio.
> >>> For Vorbis, quality=4 is used, but for MP3 no bitrate or quality
> >>> setting is set, which leads to default 96 kbps poor quality audio.
> >>> This patch explicitly sets 320 kbps bitrate for MP3, for much
> >>> better audio quality.
> >> Way too high for devices & wireless.
> >> --
> >> Francois Cartegnie
> >> VideoLAN - VLC Developer
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