[FFmpeg-devel] [RFC] Exporting virtual timelines as stream side data

Dave Rice dave at dericed.com
Wed Mar 28 20:26:18 EEST 2018

> On Mar 27, 2018, at 5:16 PM, wm4 <nfxjfg at googlemail.com> wrote:
> On Tue, 27 Mar 2018 16:45:23 -0400
> Dave Rice <dave at dericed.com <mailto:dave at dericed.com>> wrote:
>>> On Mar 27, 2018, at 4:33 PM, wm4 <nfxjfg at googlemail.com> wrote:
>>> On Tue, 27 Mar 2018 16:11:11 -0400
>>> Dave Rice <dave at dericed.com> wrote:
>>>>> On Mar 27, 2018, at 4:01 PM, Derek Buitenhuis <derek.buitenhuis at gmail.com> wrote:
>>>>> On 3/27/2018 8:52 PM, Rostislav Pehlivanov wrote:    
>>>>>> I think we should drop the internal crap if the tools and the API support
>>>>>> it. Would also solve a lot of issues like ffmpeg.c not trimming the start
>>>>>> frame (so people complain all the time about longer files).    
>>>>> I personally agree, but I thought I'd be diplomatic about it, since it would
>>>>> technically be losing a 'feature', since it would no longer Just Work(ish)
>>>>> and require user applications to apply timelines themselves - and I figured
>>>>> some would argue that point.    
>>>> +1 I’m willing to contribute what information or samples would be needed to help with Matroska support with virtual timelines. IMO, this would be a valuable feature to have in ffmpeg.
>>>> Dave Rice  
>>> Some explanations how this interacts with editions would be good.  
>> I put an example with two editions at https://archive.org/download/chapters_test/chapters_test.mkv which mimics a digitized video 
> Also this file lacks a chapter end time in the second edition. How is
> that valid?

You’re right. I moved this discussion to cellar, but when the Edition is Ordered then ChapterTimeEnd is required.
Dave Rice

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