[FFmpeg-user] Video transcoding of the streamed data.

Anil J anilj.mailing at gmail.com
Thu May 16 16:08:33 CEST 2013

Hello List,

Can someone please provide the comments on the below use case? How does
FFmpeg handles the streamed video AFA conversion is concerned? Can I use
the plain simple command line or FFmpeg provides some different tool set to
process the live stream video?


On Wed, May 15, 2013 at 6:35 PM, Anil J <anilj.mailing at gmail.com> wrote:

> Hi,
> In HTTP streaming case (e.g. watching youtube), in my use case, I want to
> adapt the video stream to suite my client requirement (e.g. codec
> conversion). I am using a proxy server to tap the HTTP response messages
> and in position to buffer the chunked video data.
> I am however want to understand how I can send this data to FFmpeg. I want
> to understand below:
> 1. How much of data (HTTP based video chunks) I need to buffer before I
> can invoke the FFmpeg?
> 2. I am not sure how the content server (youtube) chunks the video? Are
> these chunks logically independent of each other i.e. sliced at each
> I-Frame? OR they are just sliced to fit the IP packet size without getting
> into the video stream semantics.
> 3. In the case if they are just binary slices, how does FFmpeg would react
> to a data which may not be complete. Note that, even if I buffer the
> certain amount of chunks, I am not sure the validity of it, and whether
> FFmpeg will like it.
> Thanks,
> /anil.

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