Hello,
I am turning to this mailing list hoping for help because i could not
figure out by myself how to do this.
My situation is :
I have 3 video, only 2 of them have audio.
Video 1 starts with it's video and audio.
Video track 2 and 3 are added after Video 1 and mixed together with
multiple luma transitions.
Audio from video 2 is added after Video 1
I figured out how to create the video track with everything.
I thought about creating the following system to handle the audio.
- multitrack
- video (track 0)
playlist of video 1, 2 and 3 with all transitions.
- audio (track 1)
playlist of audio 1 and 2 (2 sec mixing between the 2)
Now first i would like to know if it make senses?
Secondly i have been unable to perform a very simple things, loading
only the video or audio track in a producer.
I've tried using video_index/audio_index to -1 but it leaves an empty
video or audio track.
For example :
mlt_profile profile = mlt_profile_init(NULL); /// AUDIO TRACK mlt_playlist playlist_a = mlt_playlist_init(); // Load
the base introduction AUDIO mlt_producer producer_intro_a = mlt_factory_producer( profile, NULL,
"../proj/intro-core.m4a" ); mlt_playlist_append( playlist_a, producer_intro_a );
mlt_producer_close(producer_intro_a); // Load the main body AUDIO mlt_producer producer_body_a = mlt_factory_producer(
profile, NULL, "../proj/truncated.m4a" ); mlt_playlist_append( playlist_a, producer_body_a );
mlt_producer_close( producer_body_a ); mlt_consumer consumer = mlt_factory_consumer( profile, "avformat",
"../medias/merged.m4a" ); mlt_consumer_connect( consumer, mlt_playlist_service(playlist_a));
This will create a file with my audio combined (ok) BUT there is a video
track with only white :/
I just want to combine the 2 audio track. (i left off the 2 sec mixing,
don't really know how to do it either)
This is my first time using MLT and there is almost no example of many
object and concepts so i have struggling a lot.
Thanks a lot for your help.
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