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

[Anil J]

Hello List,

Can someone please comment on below scenario? How does FFmpeg handles the
transcoding of real streamed video data? Are there any specific
considerations. I am new to FFmpeg tool and do not know most of its
features.

/anil.


On Thu, May 16, 2013 at 10:08 AM, Anil J <anilj.mailing at gmail.com> wrote:

> 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?
>
> Thanks,
> /anil.
>
>
> 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.
>>
>>
>