[FFmpeg-user] amix filter hanging

[Paul B Mahol]

On 8/24/17, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 2017-08-24 15:38 GMT+02:00 Jonathan Girven <jonathan.girven at trickbook.com>:
>
>> $ ffmpeg -y -i BigBuckBunny_320x180_t10.mp4
>> -i full_dillon_in_pro_audio.mp3
>> -filter_complex "[1:a][0:a]amix=inputs=2[m]" -map 0:v -map [m] -c:v
>> libx264
>> -preset ultrafast -c:a aac output.mp4
>
> Is the issue also reproducible if you use the native mpeg4
> encoder instead of an external library?
> $ ffmpeg -i BigBuckBunny_320x180_t10.mp4
> -i full_dillon_in_pro_audio.mp3
> -filter_complex "[1:a][0:a]amix=inputs=2[m]" -map 0:v -map [m]
> -vcodec mpeg4 -qscale 2 out.mp4

Its not reproducible if one disables video with -vn.