Can you clarify the conditions in which it won't work, and what will go wrong?


> On Dec 20, 2017, at 2:15 AM, Troy Sobotka <[email protected]> wrote:
> 
> The 
> 
> On Wed, Dec 20, 2017, 2:09 AM Daniel Flehner Heen <[email protected] 
> <mailto:[email protected]>> wrote:
> Hi!
> I'm a bit out of my league here, but frames for video are stored as subimages 
> in an ImageBuf for instance. One way of iterating over the frames may be by 
> resetting the ImageBuf passing a "frame number" as subimage.
> 
> I would add that the current PTS FFMPEG code in OIIO suffers on many codecs 
> and won't grab a frame if the codec is using B frames, and even will fail 
> occasionally with certain P frame formats.
> 
> I had a patch that worked reasonably well on B frame codecs, but I am sure 
> there would have been some existing implementations that it would have failed 
> on.
> 
> With respect,
> TJS

--
Larry Gritz
[email protected]




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