[Live-devel] Questions about project to dump Images frames from H264 stream using live555 and ffmpeg

[David Scravaglieri]

Thank you Barry I will try.

David.

Le 2 mars 2012 à 18:05, Barry Stump a écrit :

> At a minimum, you will probably need to add the MPEG start code 0x00000001 to each frame before passing it to your decoder.  See H264VideoFileSink::afterGettingFrame1() for an example of this.
> 
> You may or may not need to deal with parsing the SProp string depending on whether your H.264 stream contains SPS/PPS NAL units.  The mailing list has past discussions on this topic.
> 
> While configuring and using FFmpeg is outside the scope of this list, your primary decode function will probably be avcodec_decode_video2() from libavcodec.
> 
> -Barry
> 
> On Fri, Mar 2, 2012 at 2:10 AM, David Scravaglieri <ds at viddiga.com> wrote:
> Hi,
> 
> Well I am really stuck.
> 
> My project is to dump Images from a live H264 stream using live555 and ffmpeg.
> 
> I started with the testRTSPClient prog and in the afterGettingFrame method I want to send the fReceiveBuffer to a class that will decode each frames with ffmpeg and dump all images to a directory. But I can't find any clear sample code or clear HowTo method in order to do that.
> 
> I have read some posts in the mailinglist. But it's not clear.
> How to create a suitable ffmpeg codec context for consuming the fReceiveBuffer ?
> What about using parseSPropParameterSets ?
> Do I have to use ffmpeg av_parser_parse2 method ?
> 
> Any help would be appreciated.
> 
> Thanks in advance,
> David.
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
> 
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.live555.com/pipermail/live-devel/attachments/20120302/75e3794c/attachment-0001.html>