[vlc-devel] Re: Trick mode support for MPEG2 TS

[Måns Rullgård]

yj <yunjnz at yahoo.com> writes:

f> As a simple implementation, I think Fast Forward can
> be implemented by only decode I-Frame(if we need
> faster forward, we may discard some I-Frames...),
> But in this mode, how can we implement Slow Play?

You can insert null P frames to make it slower.

> and how to determine which frame is I-Frame? I didn't
> find any flags for frame type in the MPEG2 TS frame
> structure, can you help me?

You need to demux and parse the elementary stream.

> Also, how to determine the whole length of the TS
> stream?

The only reliable way is to scan the entire stream and examine the
PCR.

-- 
Måns Rullgård
mru at inprovide.com

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