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From: "\"zhilizhao(赵志立)\"" <quinkblack@foxmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] libavformat/movenc: Is packets being more than INT_MAX apart always an error?
Date: Wed, 20 Jul 2022 20:41:31 +0800
Message-ID: <tencent_E4E0AB734EF470F32D899A18403E9A009F08@qq.com> (raw)
In-Reply-To: <CAOxBKoQT+OE+SPUuDYAhNpS-_XH3hy+ZNk4MHLsxtZxY-BOw7A@mail.gmail.com>



> On Jul 20, 2022, at 8:18 PM, facefunk <facefunk@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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  reply	other threads:[~2022-07-20 12:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-20 12:18 facefunk
2022-07-20 12:41 ` "zhilizhao(赵志立)" [this message]
2022-07-21 12:31   ` facefunk

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