How to download yt-dpl acc+ sound

[Grzesiek]

Hi,
I have a problem with downloading the sound:

I have mpd file:
https://r.dcs.redcdn.pl/dash/o2/tvnplayer/vod/21_444_27454_0125/LIBCODER_SMOOTH_4K_H26...ile&indexMode=

I try this command:
yt-dlp --external-downloader aria2c --allow-unplayable-formats "https://r.dcs.redcdn.pl/dash/o2/tvnplayer/vod/21_444_27454_0125/LIBCODER_SMOOTH_4K_H264/6ef95ad2-bb41-4b03-83c1-2344a2e2a22a/playlist.ism/playlist.mpd?dummyfile&indexMode=" -F

and result is:

ID EXT RESOLUTION | TBR PROTO | VCODEC VBR ACODEC ABR ASR MORE INFO
-- --- ---------- - ------ ----- - ----------- ------ --------- ---- ------- ---------------------------
3 m4a audio only | 256k dash | mp4a.40.2 256k 48000Hz [pol], DASH audio, m4a_dash
2 mp4 3840x2160 | 16000k dash | avc1.640033 16000k DASH video, mp4_dash
1 mp4 3840x2160 | 25000k dash | avc1.640033 25000k DASH video, mp4_dash

then i run command:

yt-dlp --external-downloader aria2c --allow-unplayable-formats "https://r.dcs.redcdn.pl/dash/o2/tvnplayer/vod/21_444_27454_0125/LIBCODER_SMOOTH_4K_H264/6ef95ad2-bb41-4b03-83c1-2344a2e2a22a/playlist.ism/playlist.mpd?dummyfile&indexMode=" -f3

but result is 107k mono m4a file - probably file is AAC+ SBR.

Does anyone have any idea to download this file in stereo?

[codehound]

yt-dlp -f 3 --external-downloader aria2c --allow-unplayable-formats "https://r.dcs.redcdn.pl/dash/o2/tvnplayer/vod/21_444_27454_0125/LIBCODER_SMOOTH_4K_H264/6ef95ad2-bb41-4b03-83c1-2344a2e2a22a/playlist.ism/playlist.mpd?dummyfile&indexMode="

I didnt DL in full but you can still see the stats, its 256 kb/s nominal


[Attachment 61468 - Click to enlarge]

[Grzesiek]

But there is one channel (mono not stereo)

[codehound]

If it aint there you cant download it

[Grzesiek]

I think it is stereo file, but yt-dlp cannot recognize the correct format.
When I download this video in 720p from another mpd link sound is 128kb stereo, so in 4K should be also stereo in 256kb (maybe multi-channel)

[LZAA]

ffprobe:

Input #0, dash, from 'https://r.dcs.redcdn.pl/dash/o2/tvnplayer/vod/21_444_27454_0125/LIBCODER_SMOOTH_4K_H264/6ef95ad2-bb41-4b03-83c1-2344a2e2a22a/playlist.ism/playlist.mpd?dummyfile&indexMode=':
Duration: 00:21:59.00, start: 0.160000, bitrate: N/A
Program 0
Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 3840x2160 [SAR 1:1 DAR 16:9], 46 kb/s, 25 tbr, 10000k tbn, 50 tbc (default)
Metadata:
variant_bitrate : 25000000
id : 1
Side data:
unknown side data type 24 (914 bytes)
Stream #0:1: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 3840x2160 [SAR 1:1 DAR 16:9], 30 kb/s, 25 tbr, 10000k tbn, 50 tbc (default)
Metadata:
variant_bitrate : 16000000
id : 2
Side data:
unknown side data type 24 (914 bytes)
Stream #0:2(pol): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 0 kb/s (default)
Metadata:
variant_bitrate : 256000
id : 3
Side data:
unknown side data type 24 (917 bytes)

[Grzesiek]

Thanks LZAA, I am very surprised this is a mono file