#873 SMPlayer File Properties lies about channels on mono mp3 file

[Martin Zahradník]

SMPlayer File Properties lies about channels on mono mp3 file - it states "Channels: 2", while it is certainly a mono mp3 file. Have a look:

❱ file final_mono.mp3 
final_mono.mp3: MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, Monaural

❱ file final_stereo.mp3 
final_stereo.mp3: MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, Stereo

The screenshot from SMPlayer is attached.

Using SMPlayer Version: 17.7.0 (revision 8599) on Xubuntu 17.10

[Ricardo Villalba]

Can you provide a sample file?

[Martin Zahradník]

yes, here you go.

And info via exiftool:

❱ exiftool test_*.mp3 | grep -iE "\.mp3|stereo|channel"
======== test_mono.mp3
File Name                       : test_mono.mp3
Channel Mode                    : Single Channel
MS Stereo                       : Off
Intensity Stereo                : Off
Lame Stereo Mode                : Mono
======== test_stereo.mp3
File Name                       : test_stereo.mp3
Channel Mode                    : Stereo
MS Stereo                       : Off
Intensity Stereo                : Off
Lame Stereo Mode                : Stereo

[Ricardo Villalba]

When using mpv as multimedia engine, it correctly reports 1 audio channel. However mplayer reports 2 channels. So I guess it's a bug of mplayer.