[Libav-user] How to determine the largest best_effort_timestamp?

[Andy Shaules]

On 10/15/2013 7:34 AM, James Board wrote:
>
> >An AVI container should specify a frame rate, and the time stamp is 
> always 1/framerate * >total_frames_read  there abouts...
>
> That doesn't tell me the exact largest best_effort_timestamp.  Can I 
> determine the
> largest best_effort_timestamp exactly?  Would this be easier with a 
> file container other
> than AVI?
>
>
best_effort implies a guess. There is no guessing for an avi file. its 
uses a static frame rate whether or not there is actual video for that 
frame. The largest timestamp in the file would be total number of vid 
frames times the frame duration.


>
> On Sunday, October 13, 2013 2:20 PM, Andy Shaules 
> <bowljoman at gmail.com> wrote:
> On 10/12/2013 12:52 PM, James Board wrote:
>> In a C program with libav, how can I determine what is the largest 
>> best_effort_timestamp
>> for my input video file, which is AVI container and compressed with 
>> ffvhuff?
>>
>>
>>
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> An AVI container should specify a frame rate, and the time stamp is 
> always 1/framerate * total_frames_read  there abouts...
>
> If the length of the video payload is zero, then count that as a 
> dropped encoder frame, and increment the total_frames_read for it, 
> continue.
>
> Andy
>
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