The best Flash video frame dimensions

What are the best Flash video frame dimensions?

Video codecs perform best when the frame width and height use multiples of 16. While you can use any width and height in your encoding settings, non-optimal dimensions can result in poor image quality and reduced frame rate. For the best image quality and playback, you should always use width and height dimensions that use a multiple of 16 (best), 8 (better), or 4 (good). We would recommend that you refrain from using 4 or 8 multiples unless it is absolutely necessary. 

Note: Both the native encoding dimensions and the playback dimensions should be a multiple of 16. For example, if you encode your FLV file to use a frame dimension of 320 x 240, you should scale to a size such as 512 x 384. 

Refer to the following tables to pick dimensions for your layout.

4:3 aspect ratio sizes: 

Best (16) Better (8) Good (4)
640 x 480 608 x 456 624 x 468
576 x 432 544 x 408 592 x 444
512 x 384 480 x 360 560 x 420
448 x 336 416 x 312 528 x 396
384 x 288 352 x 264 496 x 372
320 x 240 288 x 216 464 x 348
256 x 192 224 x 168 432 x 324
192 x 144 160 x 120 400 x 300
128 x 96   368 x 276
    336 x 252
    304 x 228
    272 x 204
    240 x 180
    208 x 156
    176 x 132
    144 x 108
    112 x 84

 

16:9 aspect ratio sizes:

Best (16) Better (8) Good (4)
1280 x 720 1152 x 648 1216 x 684
1024 x 576 896 x 504 1088 x 612
768 x 432 640 x 360 960 x 540
512 x 288 384 x 216 832 x 468
256 x 144 128 x 72 704 x 396
    576 x 324
    448 x 252
    320 x 180
    192 x 108

 

 

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