Youtube

這應該 youtube 不支援你的 video 格式, 詳細情形見下文


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YouTube accepts video files from most digital cameras, camcorders, and cell phones in the .WMV, .AVI, .MOV, and .MPG file formats.

We've found that files converted from .wmv to one of the other formats our webpage accepts generally have a lower playback quality than other file formats. If you have your source video in a format other than a .wmv file, I'd recommend encoding directly to MPEG4 (DivX, Xvid, SQV3) at 320x240, with 64k Mono MP3 Audio. If you have a source .wmv in high bitrate and larger resolution I'd recommend converting to MPEG4 at full resolution and then resizing to 320x240 using a high quality resizing algorithm - this can help reduce the number of artifacts you end up with.