[FFmpeg-devel] libavformat/movenc: Is packets being more than INT_MAX apart always an error?

"zhilizhao(赵志立)" quinkblack at foxmail.com
Wed Jul 20 15:41:31 EEST 2022



> On Jul 20, 2022, at 8:18 PM, facefunk <facefunk at fcfnk.com> wrote:
> 
> It's commonly the case with forced subtitle tracks that samples are more
> than INT_MAX microseconds (35m47.48s) apart. This being the case, packet
> duration will be deemed out of range by check_pkt and the packet dts set to
> an incorrect value, even if pkt->duration is actually valid.
> 
> I had begun working out how to inject extra packets to satisfy this check
> but I thought I would ask. Is this check necessary for mov_text packets?

I think so, it’s still limited by the 32bits sample_delta in stts.

On the other hand, I have an idea that a timescale like 100 can be used in
that case, which is 2^31/100/3600 = 5965 hours.

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