N_m3u8DL-RE select specific video and audio track automatically

[josephsamual]

Hi,

I'm trying to download a video and audio track from an HLS playlist using N_m3u8DL-RE, and I'm having some issues.

Here's what I need:

Video: 1920x1080 resolution
Audio: Stereo 2CH
This is the command I used:

However, instead of the stereo 2CH audio, it is downloading a 16/JOCCH audio track. I'm not sure what I'm doing wrong.

N_m3u8DL-RE https://xxxx/master.m3u8 -sv res='1920*' -sa codec='2CH*' -M format=mp4 --save-name=test --download-retry-count=10 --thread-count=12

Any help to get the correct audio track would be greatly appreciated.

N_m3u8DL-RE https://xxxx/master.m3u8 -sv res='1920*' -sa codec='2CH*' -M format=mp4 --save-name=test --download-retry-count=10 --thread-count=12
01:35:16.884 INFO : N_m3u8DL-RE (Beta version) 20230628
01:35:16.895 INFO : Loading URL: https://xxxx/master.m3u8
01:35:16.975 INFO : Content Matched: HTTP Live Streaming
01:35:16.975 INFO : Parsing streams...
01:35:16.975 WARN : Master List detected, try parse all streams
01:35:16.981 WARN : Writing meta json
01:35:16.981 INFO : Extracted, there are 10 streams, with 6 basic streams, 4 audio streams, 0 subtitle streams
01:35:16.981 INFO : Vid 3840x2160 | 5931 Kbps | 24 | avc1.64001f
01:35:16.981 INFO : Vid 1920x1080 | 2892 Kbps | 24 | avc1.64001f
01:35:16.981 INFO : Vid 1280x720 | 1625 Kbps | 24 | avc1.4d401f
01:35:16.981 INFO : Vid 853x480 | 919 Kbps | 24 | avc1.4d401f
01:35:16.982 INFO : Vid 640x360 | 535 Kbps | 24 | avc1.4d401f
01:35:16.982 INFO : Vid 426x240 | 359 Kbps | 24 | avc1.4d401f
01:35:16.982 INFO : Aud audio_EC3Atmos | 'ENGLISH' | 16/JOCCH
01:35:16.982 INFO : Aud audio_51 | 'ENGLISH' | 6CH
01:35:16.982 INFO : Aud audio | 'ENGLISH' | 2CH
01:35:16.982 INFO : Aud audio_AC4IMS | 'ENGLISH' | 2/IMSACH
01:35:16.982 INFO : Parsing streams...
01:35:17.003 INFO : Selected streams:
01:35:17.003 INFO : Vid 1920x1080 | 2892 Kbps | 24 | avc1.64001f | 855 Segments | ~02h22m21s
01:35:17.003 INFO : Aud audio_EC3Atmos | 'ENGLISH' | 16/JOCCH | 855 Segments | ~02h22m21s
01:35:17.003 WARN : Writing meta json
01:35:17.003 INFO : Save Name: test
01:35:17.003 WARN : MuxAfterDone is detected, binary merging is automatically enabled
01:35:17.004 INFO : Start downloading...Vid 1920x1080 | 2892 Kbps | 24 | avc1.64001f
01:35:17.007 WARN : Reading [url=https://www.videohelp.com/software/MediaInfo]media info[/url]...
01:35:17.053 INFO : NaN: Video, h264 (avc1), 1920x1080
01:35:19.504 WARN : Force Exit...

Vid 1920x1080 | 2892 Kbps | 24 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  15% 198.91MB/1.41GB 105.26MBps 00:00:13 ⣾
Aud 'ENGLISH' | 16/JOCCH       ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   0%               -     -      --:--:--  ^C
                                                                                                       

[white_snake]

I doubt that "2CH" corresponds to the audio codec. If you provided the actual m3u8 url, that would help us help you, or if it's not accessible, copy-paste its whole content here.

[josephsamual]

I doubt that "2CH" corresponds to the audio codec. If you provided the actual m3u8 url, that would help us help you, or if it's not accessible, copy-paste its whole content here.

Here is what I got from the playlist

#EXTM3U
## Generated with https://github.com/google/shaka-packager version v2.6.1-634af65-release

#EXT-X-INDEPENDENT-SEGMENTS

#EXT-X-MEDIA:TYPE=AUDIO,URI="audio/aac/stream.m3u8",GROUP-ID="audio",NAME="'ENGLISH'",AUTOSELECT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="audio/ec3/stream.m3u8",GROUP-ID="audio_51",NAME="'ENGLISH'",AUTOSELECT=YES,CHANNELS="6"
#EXT-X-MEDIA:TYPE=AUDIO,URI="audio/ac4/steam.m3u8",GROUP-ID="audio_AC4IMS",NAME="'ENGLISH'",AUTOSELECT=YES,CHANNELS="2/IMSA"
#EXT-X-MEDIA:TYPE=AUDIO,URI="audio/ec3joc/steam.m3u8",GROUP-ID="audio_EC3Atmos",NAME="'ENGLISH'",AUTOSELECT=YES,CHANNELS="16/JOC"

#EXT-X-STREAM-INF:BANDWIDTH=2106175,AVERAGE-BANDWIDTH=1625055,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=1280x720,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
720/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=3931655,AVERAGE-BANDWIDTH=2892428,CODECS="avc1.64001f,mp4a.40.2",RESOLUTION=1920x1080,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
1080/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=7673658,AVERAGE-BANDWIDTH=5931275,CODECS="avc1.64001f,mp4a.40.2",RESOLUTION=3840x2160,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
2160/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1140623,AVERAGE-BANDWIDTH=919157,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=853x480,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
480/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=647998,AVERAGE-BANDWIDTH=535819,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=640x360,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
360/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=409348,AVERAGE-BANDWIDTH=359268,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=426x240,FRAME-RATE=24.000,AUDIO="audio",CLOSED-CAPTIONS=NONE
240/stream.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=2151908,AVERAGE-BANDWIDTH=1684205,CODECS="avc1.4d401f,ec-3",RESOLUTION=1280x720,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
720/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=3977388,AVERAGE-BANDWIDTH=2951578,CODECS="avc1.64001f,ec-3",RESOLUTION=1920x1080,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
1080/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=7719391,AVERAGE-BANDWIDTH=5990425,CODECS="avc1.64001f,ec-3",RESOLUTION=3840x2160,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
2160/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1186356,AVERAGE-BANDWIDTH=978307,CODECS="avc1.4d401f,ec-3",RESOLUTION=853x480,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
480/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=693731,AVERAGE-BANDWIDTH=594969,CODECS="avc1.4d401f,ec-3",RESOLUTION=640x360,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
360/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=455081,AVERAGE-BANDWIDTH=418418,CODECS="avc1.4d401f,ec-3",RESOLUTION=426x240,FRAME-RATE=24.000,AUDIO="audio_51",CLOSED-CAPTIONS=NONE
240/stream.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=2034117,AVERAGE-BANDWIDTH=1565735,CODECS="avc1.4d401f,ac-4.02.02.00",RESOLUTION=1280x720,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
720/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=3859597,AVERAGE-BANDWIDTH=2833108,CODECS="avc1.64001f,ac-4.02.02.00",RESOLUTION=1920x1080,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
1080/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=7601600,AVERAGE-BANDWIDTH=5871955,CODECS="avc1.64001f,ac-4.02.02.00",RESOLUTION=3840x2160,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
2160/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1068565,AVERAGE-BANDWIDTH=859837,CODECS="avc1.4d401f,ac-4.02.02.00",RESOLUTION=853x480,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
480/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=575940,AVERAGE-BANDWIDTH=476499,CODECS="avc1.4d401f,ac-4.02.02.00",RESOLUTION=640x360,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
360/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=337290,AVERAGE-BANDWIDTH=299948,CODECS="avc1.4d401f,ac-4.02.02.00",RESOLUTION=426x240,FRAME-RATE=24.000,AUDIO="audio_AC4IMS",CLOSED-CAPTIONS=NONE
240/stream.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=2407908,AVERAGE-BANDWIDTH=1940205,CODECS="avc1.4d401f,ec-3",RESOLUTION=1280x720,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
720/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=4233388,AVERAGE-BANDWIDTH=3207578,CODECS="avc1.64001f,ec-3",RESOLUTION=1920x1080,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
1080/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=7975391,AVERAGE-BANDWIDTH=6246425,CODECS="avc1.64001f,ec-3",RESOLUTION=3840x2160,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
2160/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1442356,AVERAGE-BANDWIDTH=1234307,CODECS="avc1.4d401f,ec-3",RESOLUTION=853x480,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
480/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=949731,AVERAGE-BANDWIDTH=850969,CODECS="avc1.4d401f,ec-3",RESOLUTION=640x360,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
360/stream.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=711081,AVERAGE-BANDWIDTH=674418,CODECS="avc1.4d401f,ec-3",RESOLUTION=426x240,FRAME-RATE=24.000,AUDIO="audio_EC3Atmos",CLOSED-CAPTIONS=NONE
240/stream.m3u8

#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=184548,AVERAGE-BANDWIDTH=66011,CODECS="avc1.4d401f",RESOLUTION=1280x720,CLOSED-CAPTIONS=NONE,URI="720/iframe.m3u8"
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=292012,AVERAGE-BANDWIDTH=106698,CODECS="avc1.64001f",RESOLUTION=1920x1080,CLOSED-CAPTIONS=NONE,URI="1080/iframe.m3u8"
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=311242,AVERAGE-BANDWIDTH=168860,CODECS="avc1.64001f",RESOLUTION=3840x2160,CLOSED-CAPTIONS=NONE,URI="2160/iframe.m3u8"
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=92944,AVERAGE-BANDWIDTH=38457,CODECS="avc1.4d401f",RESOLUTION=853x480,CLOSED-CAPTIONS=NONE,URI="480/iframe.m3u8"
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=45172,AVERAGE-BANDWIDTH=22333,CODECS="avc1.4d401f",RESOLUTION=640x360,CLOSED-CAPTIONS=NONE,URI="360/iframe.m3u8"
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=27419,AVERAGE-BANDWIDTH=13461,CODECS="avc1.4d401f",RESOLUTION=426x240,CLOSED-CAPTIONS=NONE,URI="240/iframe.m3u8"

[white_snake]

I doubt that "2CH" corresponds to the audio codec. If you provided the actual m3u8 url, that would help us help you, or if it's not accessible, copy-paste its whole content here.

Here is what I got from the playlist

Actually without a proper url I can't test the selection, but this should work:

-sa channels=2

[aqzs]

Actually without a proper url I can't test the selection, but this should work:

-sa channels=2

[Attachment 79544 - Click to enlarge]
Still not working.. Since op didn't share the url I don't know if I can share it..