[FFmpeg-devel] Demuxer libopenmpt doesn't show subsong duration

[Reino Wijnsma]

On 10-9-2017 21:05, Reino Wijnsma <rwijnsma at xs4all.nl> wrote:
> Hello,
>
> Today I've compiled FFmpeg with libopenmpt (N-87255-gcbe181c) for the
> first time and I must say I'm very pleased with it. Especially with
> the subsong option.
>
> ffmpeg -i "K_vision.umx"
> Input #0, libopenmpt, from 'K_vision.umx':
>   Metadata:
>     title           : Nightvision - Sandman/KFM
>     encoder         : Impulse Tracker 2.14p2
>     [...]
>   Duration: 00:02:53.98, bitrate: 31 kb/s
>     Stream #0:0: Audio: pcm_f32le, 48000 Hz, 2 channels, flt, 3072 kb/s
>
> 02:53.98 is the duration of the 1st subsong (of 3).
>
> ffmpeg -subsong 1 -i "K_vision.umx"
> Input #0, libopenmpt, from 'K_vision.umx':
>   Metadata:
>     title           : Nightvision - Sandman/KFM
>     encoder         : Impulse Tracker 2.14p2
>     [...]
>     track           : 2
>   Duration: 00:02:53.98, bitrate: 31 kb/s
>     Stream #0:0: Audio: pcm_f32le, 48000 Hz, 2 channels, flt, 3072 kb/s
>
> With -subsong 1 I expected to see Duration: 00:00:48.05, but it still
> shows the 1st subsong's duration.
> Is this a bug?
>
> ffplay -subsong 1 -i "K_vision.umx" -autoexit
> Input #0, libopenmpt, from 'K_vision.umx':
>   Metadata:
>     title           : Nightvision - Sandman/KFM
>     encoder         : Impulse Tracker 2.14p2
>     [...]
>     track           : 2
>   Duration: 00:02:53.98, bitrate: 31 kb/s
>     Stream #0:0: Audio: pcm_f32le, 48000 Hz, 2 channels, flt, 3072 kb/s
>   *48.05* M-A:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
>
> FFplay does show me the actual duration if I let it play track 2 till
> the end.
>
> -- Reino
>
*ping*

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