Audio layer

What can I do with the audio layer?

With the audio layer you can play audio files.

How do I add an audio layer?

Choose LAYER > Add layer > Add audio layer... to add a new audio layer.

The new audio layer can be selected from the layers dropdown to make it the active layer.

Start position

Audio files start playing at the beginning of the show and are mixed with all other layers containing audio.


If BluffTitler fails to play your audio file, you are probably missing an audio codec. Learn more about codecs.

Audio layer properties


The volume.

VJ dialog

Choose LAYER > VJ... to display the VJ dialog.

With the VJ dialog you can connect layer properties to an oscillator or to the audio volume.

When connecting to an oscillator, the property is adjusted with a fixed beat. Since all modern dance music uses a fixed BPM, it can be used as a beat detection system.

When connecting to the audio, the property is adjusted to the volume of all audio streams (audio, video layers).


This lists all properties of the active layer. Use the dropdown to select the property you want to connect to.

Up to 10 properties can be connected per layer. Use the vertical scrollbar to the right to add another property.


The 3 sensitivity textboxes correspond to the 3 sliders of the selected property. The sensitivity value is added to the property.

For example, when the Text position property is selected, a value of (0,100,0) means that at most 100 is added to the vertical position. Use a lower value to make the text jump less high.

When a colour property is selected, a value of (255,0,0) means that the audio can turn blue (0,0,255) into purple (255,0,255).

The default value of (0,0,0) does nothing.


This sets the Beats Per Minute.

Time offset in milliseconds

This can be used to correct audio streams that do not start at the beginning.


This sets the shape of the waveform.







The BPM is used as the number of samples per minute

Random, linear interpolation

The BPM is used as the number of samples per minute

Random, spline interpolation

The BPM is used as the number of samples per minute

Frequency range

The layer property can be connected to a limited audio frequency range. From very low (20 Hz) to very high (8000 Hz).

For example, to make your layer listen to the bass drum, select the low frequencies.

The default range of (20 Hz, 8000 Hz) makes your layer listen to all frequencies.


Audio with a volume below this value is ignored. This value must be between 0 (silence) and 1 (maximum volume).

For example, a value of 0.5 means that the layer only begins to respond to the music when the volume is medium high.


Audio with a volume higher than this value is treated as maximum volume. This value must be between the threshold value and 1 (maximum volume).

VJ effects

Next to using the VJ dialog, you can also make your layers dance to the beat with the VJ effects.

How do I apply a VJ effect?

Click on the Change effect... button. You can find the VJ effects in the Effects/VJ folder. Learn more

Make your text dance to the beat

Apply VJ/VJ_Dancer to your text layer.

Make your speakers pound to the beat

Apply VJ/VJ_PoundingSpeaker to your picture layer.

Create 3D spectrum analyzers

Apply VJ/VJ_SpectrumAnalyzer_3D to your text layer.

Create 2D spectrum analyzers

Apply VJ/VJ_SpectrumAnalyzer_2D to your picture layer.

Create abstract music visualisations

Apply VJ/VJ_SpectrumAnalyzer_Circles to your picture layer.

Create VU meters

Apply VJ/VJ_VUMeter to your picture layer.

Make your 3D models jump to the beat

Apply VJ/VJ_Dancer to your model layer.

Make your particles dance to the beat

Apply VJ/VJ_Particles_Additive to your particle layer.

Audio issues

Silent videos

A popular AC3 filter claims that it can handle MP3 files, but in fact it can't, resulting in silent videos. To prevent BluffTitler from using this filter, open the AC3 filter config tool system tab and disable MPEG Audio under Use AC3 filter for.

Synchronization issues in realtime/editing mode

BluffTitler uses DirectShow to play video and audio files. This means that you require a DirectShow decoder filter for the format you want to play. Unfortunately not all filters behave as they should.

A popular MP3 decoder filter adds a delay of almost a second to songs encoded with a bitrate of 320 kbps. Luckily the exported video file plays fine, but if realtime performance is important this bug can be worked around by re-encoding to a bitrate of 256 kbps or by converting it to a WAV or WMA file.

Synchronization issues in exported videos

A video with audio contains 2 streams: a video and an audio stream. Sync problems can occur when your video is too big for your system to load both streams in time. This can be fixed by using compression.

Audio stock sites

There are many sites where you can download music and sound samples.

Music for video offers great music and sound effects produced by BluffTitler fans for BluffTitler fans!

Audiojungle offers great samples for a fair price.

Partners in rhyme offers great music packs.

Getty images offers great music.

Epic stock media offers awesome sound packs.

Audio network offers monetisation codes with their professional licenses to remove YouTube ads.

ContiVerse offers unlimited access for its members

Incompetech offers free audio files when you make an attribution