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Transcoding adaptive stream results in unwatchable low quality

Posted: 15 Jan 2021 07:51
by troykelly
Hi,

When transcoding an adaptive logic stream, the transcoded "copy" is at the lowest possible quality (images below).

I am clearly missing something in the configuration.

Starting VLC with

Code: Select all

VLC_ADAPTIVE_WIDTH=1280 VLC_ADAPTIVE_HEIGHT=720 VLC_ADAPTIVE_BITRATE=2048 VLC_ADAPTIVE_LOGIC=highest PASSWORD=supersecure PORT=9999 /usr/bin/vlc -I telnet --telnet-password=${PASSWORD} --telnet-port=${PORT} --drop-late-frames --skip-frames --play-and-exit --no-daemon --adaptive-logic=${VLC_ADAPTIVE_LOGIC} --adaptive-maxwidth=${VLC_ADAPTIVE_WIDTH} --adaptive-maxheight=${VLC_ADAPTIVE_HEIGHT} --adaptive-bw=${VLC_ADAPTIVE_BITRATE} --vlm-conf=/vlc/stream.vlm

Code: Select all

del all new stream broadcast enabled setup stream option network-caching=1000 setup stream input "https://example.com/stream" loop setup stream output #transcode{venc=x264{preset=ultrafast},vcodec=h264,threads=4,vb=1000}:duplicate{dst='rtp{access=udp,mux=ts,ttl=15,dst=234.0.1.1,port=1234,sdp=sap://,group="News",name="Interesting News"}'} control stream play
The transcoded output
Image

The source
Image

Re: Transcoding adaptive stream results in unwatchable low quality

Posted: 15 Jan 2021 10:46
by InTheWings
VLC_ADAPTIVE_WIDTH=1280
VLC_ADAPTIVE_HEIGHT=720
VLC_ADAPTIVE_BITRATE=2048
VLC_ADAPTIVE_LOGIC=highest

without seeing the ladder, we can't tell

Re: Transcoding adaptive stream results in unwatchable low quality

Posted: 15 Jan 2021 12:41
by troykelly
I'm lost apologies @inthewings - what additional information can I provide to help?

Re: Transcoding adaptive stream results in unwatchable low quality

Posted: 18 Jan 2021 10:18
by InTheWings