the saved file lost audio track

[CharlesChou73]

the file info on stream

the file info downloaded

My operation:
continious mode, ctrl+Z to start dumping, and ctrl+X to end dumping

glad to provide more info if needed

[Sagnac]

Could you post the log?

[CharlesChou73]

Could you post the log?

mpv.log

[Sagnac]

I don't see a write request in that log; are you sure you dumped the cache while outputting the log file?

In any case, is the audio track included if instead of using the script you run

async dump-cache 0 no file.mp4

either through the console or with a keybind?

[CharlesChou73]

ctrl+Z to start dumping, ctrl+X to stop, maybe I shouldn't use ctrl+X to stop?
BTW，I noticed that if I don't stop the dumping, the file on disk is a bit smaller (9,699,372 vs 9,769,038), is that matters?

I don't see a write request in that log; are you sure you dumped the cache while outputting the log file?

I'm sure, here's what I did:
a. del the mpv log file
b. open a stream video via mpv
c. ctrl+Z to start dumping
d. ctrl+X to stop it
e. exit mpv
then I got a muted video file, and the log file.

In any case, is the audio track included if instead of using the script you run

async dump-cache 0 no file.mp4

either through the console or with a keybind?

ran the script in mpv console, it printed this:

and got the same muted file (the same size in byte).

[CharlesChou73]

I read the "dump-cache" part of mpv wiki, and tried to run the followed script in console:

dump-cache 0 10 f:/file.mp4

then I got a video file with no audio.

So, I think there's something wrong with the mpv "dump-cache" command?

[Sagnac]

This script wraps dump-cache so if this issue happens when not using streamsave and instead using dump-cache directly in mpv then yes it's potentially a problem with mpv. I still don't see the recorder being initialized in your log so if you report it on their issue tracker I would recommend you produce another log file while also running mpv with --no-config from the command line.