Change the preview pic of videos.

i Think automatic when the upload video finish the dophin save the preview in 0 ..is better in 6 sec for garanty something in the pic and no the black pic...also why dont put this opction in the admin panel....like this....When you want the program make the preview pic of any movie? _  and then the admin change the seconds for make the preview pic....also..is good the oportunity to change the preview pic manual every video if you want...like dolphin 6 ...when you take pic from any part of video...i think is good for admin deside change how look videos..but user can see like youtube 3 diferent opcion of preview pic..this is good to.

also...i like the oportunity to change the site of mb limited for videos....i see en dolphin 6 was arond 50 mb ....i thnk the admin need how change this in the admin panel...to 100 mb for videos or more 200 if the admin want..also....the cuanty of videos for user ..is 30 videos..we need the oportuninty of change this for more from admin....like 200 videos for user if i want or 50 videos..admin need more control of this all stuff in the admin panel.

thank you dophin ,good job.