Hi team
I'm having an issue where I'm unable to cast files with multichannel audio to my Google Chromecast (newest/Google TV version) or LG TV. If the downmix option is unchecked, multichannel audio files stop streaming abruptly after 13 seconds - the chromecast buffers then the stream stops. Starting a HLS stream does the same, which suggests to me it's an issue with the transcoding/audio and not the end device:
10:12:00.334: ===== Starting transcoding ======
10:12:00.334: Command line: C:\Program Files (x86)\SVP 4\mpv64\mpv.exe E:/Unwatched/New Amsterdam/New Amsterdam - 04x01 - More Joy.mkv --aid=1 --sid=no --no-sub-auto --no-ytdl --o=C:/Users/docto/AppData/Local/Temp/svpcast/stream/svp%04d.ts --input-ipc-server=mpvstreampipe --input-media-keys=no --no-msg-color --hwdec=auto-copy --vf=vapoursynth:[C:\Users\docto\AppData\Roaming\SVP4\scripts\fffe.py]:4:8 --ovc=h264_nvenc --ovcopts=b=14500000,rc=cbr,preset=slow,profile=high,g=60,keyint_min=60,time_base=1000/59940,threads=24 --oac=ac3 --audio-channels=auto --oacopts=ac=6,flags=+cgop-global_header,strict=-2 --of=ssegment --ofopts=segment_time=4,segment_format=mpegts,segment_list_size=25,segment_start_number=0,segment_list_flags=+live,segment_list=[C:\Users\docto\AppData\Local\Temp\svpcast\stream\svp.m3u8]
10:12:00.393: (+) Video --vid=1 (*) (h264 1920x1080 23.976fps)
10:12:00.393: (+) Audio --aid=1 --alang=eng (*) (eac3 6ch 48000Hz)
10:12:00.393: Subs --sid=1 --slang=eng 'English' (subrip)
10:12:00.585: Using hardware decoding (dxva2-copy).
10:12:00.585: [autoconvert] Converting nv12 -> yuv420p
10:12:00.841: VO: [lavc] 1920x1080 yuv420p
10:12:00.841: [vo/lavc] Opening encoder: NVIDIA NVENC H.264 encoder [h264_nvenc]
10:12:00.995: [ao/lavc] Opening encoder: ATSC A/52A (AC-3) [ac3]
10:12:00.995: [encode] Opening muxer: streaming segment muxer [stream_segment,ssegment]
10:12:00.995: AO: [lavc] 48000Hz 5.1(side) 6ch floatp
10:12:04.916: stopped by user
10:12:05.040: ===== mpv exited with code 62097 =====
If the downmix option is selected, the stream works - any suggestions on how I can get a multichannel audio stream working?