Use the drop-down list to choose GIF animation, BMP sequence, JPG sequence or TGA sequence format.
Click the Advanced 
button
to set image options depending upon your output format.
The export image sequence area is split into 4 sections: Format, Output Size, Render Quality, and Output Range.
Format
Use the drop-down list to choose GIF animation, BMP sequence, JPG sequence or TGA sequence format.
Click the Advanced button
to set image options depending upon your output format.
GIF animation
Select the number of colors and transparency options for a GIF output. When exporting GIF images with transparency, turning off the Anti-Aliased option will produce cleaner edges.
JPG sequence
Use the slider to assign the JPG quality.
TGA sequence
Select 32 or 24 bit TGA output. 32 bit TGA images containing Alpha channels are more suitable for image and video composition.
Output size
You can define the size of the exported image in the Output Size field. To define output size:
Select either a Standard Size or define a Custom Size using the spinner arrows.
Render quality
The render quality can be set to Preview or Final Render using the radio buttons. Check the Anti-Aliased check-box to export an anti-aliased image. An anti-aliased output will produce an image with less jagged edges and pixilated areas.
Output range
You can either export the entire video, or just a range of frames. Select the output range using the radio buttons in the Output Range field. You can also select the Frame Rate here using the slider bar. The output range can also be set using the 2 triangle markers below the play bar.
Click the Export 
button to export the video.