Here's a summary of the audio and video specifications you need for the best results on YouTube. For further details, please read the information listed directly below this summary.
 

Video

Resolution

>Recommended: 1280 x 720 (16x9 HD) and 640 x 480 (4:3 SD)
There is no required minimum resolution - in general the higher resolution the better and HD resolution is preferred. For older content, lower resolution is unavoidable.

Bit rate

Because bit-rate is highly dependent on codec there is no recommended or minimum value. Videos should be optimized for resolution, aspect ratio and frame rate rather than bit rate.

Frame rate

The frame rate of the original video should be maintained without re-sampling. In particular pulldown and other frame rate re-sampling techniques are strongly discouraged.

Codec

H.264, MPEG-2 or MPEG-4 preferred.

Audio

Codec

MP3 or AAC preferred

Sampling rate

44.1kHz

Channels

2 (stereo)


 

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