[x264-devel] h264 header size

Loren Merritt lorenm at u.washington.edu
Wed Oct 17 22:11:11 CEST 2007


On Wed, 17 Oct 2007, Emanuele Fumagalli wrote:

> I'm using the x264 library to encode a video for then stream it using a kind of progressive download.
> I noticed that when opening the file the decoder requires a large amount of data, up to 1.5 Mb when the file is 1h 30min, and that is proportional to the lenght of the video.
> Is there a way to avoid this preload, or is it something necessary for the play of the video?
> Or do you know if there's a way to compress it to enable a fast start when streaming?
> I think that's because the sample table box is preloaded during the opening of the video, is that necessary for the seeking?
> I also noticed that using a High Profile instead of Baseline increases this header around two times.

Sample table box is a mp4 header, it has nothing to do with h264.

--Loren Merritt



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