Intel® Integrated Performance Primitives
Community support and discussions relating to developing high-performance vision, signal, security, and storage applications.
Announcements
Welcome to the Intel Community. If you get an answer you like, please mark it as an Accepted Solution to help others. Thank you!

H264 Reverse Playback with IPP h264 decoder?

manca1
Beginner
226 Views

 Hi there,

I am using IPP v7.0 H264 Decoder. I would like to decode video in reverse and play it back backwards. Is this possible with IPP h264 decoder, ie. can it decode frames properly if they come in a reverse order? Generally I am interested in your experiences with this problem? I already have some ideas of how it could be done, but first I'd like to hear what do you think?

Thanks.

 
0 Kudos
1 Reply
franknatoli
New Contributor I
226 Views

You need to backup to the previous I-frame, decode it, then all P-frames to the next I-frame, then playback the bitmaps in reverse. If interlaced, and I-frames alternate even/odd, you must backup to previous even I-frame, then decode forward across two I-frame/P-frames groups.

Reply