Audio from tiktok is not downloading. 0 bytes error

[bandicuttt]

problem description

I'm using the latest version of cobalt. When I try to download a tiktok consisting of pictures + audio, I get pictures, but I can't download audio. Surprisingly, if I try to download with the parameter “”downloadMode“: ‘audio’”, the audio is downloaded normally. The same behavior I observe on the main.

Pictures separately -- ok
Audio separately -- ok
Audio + pictures -- not ok

your instance configuration

cobalt-api    |
cobalt-api    | cobalt API ^ω⁠^
cobalt-api    | ~~~~~~
cobalt-api    | version: 10.4.4
cobalt-api    | commit: 5973d70053a6d5642ca2eb242e61813478ec0b6b
cobalt-api    | branch: main
cobalt-api    | remote: imputnet/cobalt
cobalt-api    | start time: Thu, 12 Dec 2024 20:49:55 GMT
cobalt-api    | ~~~~~~
cobalt-api    | url: http://localhost:9000/
cobalt-api    | port: 9000
cobalt-api    |

[lostdusty]

any links to help replicate the issue?

[bandicuttt]

any links to help replicate the issue?

https://vm.tiktok.com/ZMkLHUYHq/

None of the links where the tiktok contains a swiper are working

[sertraline]

Can confirm this is an issue even on the main instance. Debugging this is painful because for some reason there is zero debug logging and helpful information on what's happening, so I gave up. But from what I found out the tiktok URLs are working perfectly fine, requests to tiktok complete successfully and the streamInfo gets cached just fine. But accessing the external tunnel will simply give you 0 bytes output.

[sertraline]

These are ffmpeg args that I receive on my instance. Note the undefinedk.

[
  '-loglevel',
  '-8',
  '-headers',
  'user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36\r\n',
  '-i',
  'http://127.0.0.1:9000/itunnel?id=4mYNHNyKIyPHyQm755y-w',
  '-vn',
  '-b:a',
  'undefinedk'
]

cobalt/api/src/stream/types.js

Line 254 in 0f65165

args.push("-b:a", `${streamInfo.audioBitrate}k`)