Video to jpeg: embedding timecode into the jpegs

[Thiago Santos]

On 08/15/2015 08:13 PM, Graham Leggett wrote:
> On 05 Aug 2015, at 1:08 AM, Thiago Santos <thiagoss at osg.samsung.com> wrote:
>
>> The jifmux element can write exif tags to jpeg streams.
>>
>> frame. ! videorate ! video/x-raw,framerate=1/1 ! jpegenc ! jifmux ! queue ! multifilesink location=frame%d.jpg
> Some more reverse engineering later, and I’m confused - it seems that jifmux is able to write both EXIF data and XMP data, based on the code attempting to write EXIF then directly afterwards XMP.
>
> I am stuck on the syntax you would use to target XMP.
>
> Ideally, I would like to write “datetime” using XMP instead of EXIF, as the current implementation of EXIF gives resolution down to the second, while it appears that XMP gives you full millisecond resolution.
>
> I am struggling to work out the XMP syntax for doing so that targets XMP and not EXIF, is it possible to confirm what it is?
If you push tags to jifmux it should write both EXIF and XMP tags for 
the ones it recognizes.

Regards,

>
> Regards,
> Graham
> —
>
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-- 
Thiago Sousa Santos
Senior Multimedia Engineer, Open Source Group
Samsung Research America - Silicon Valley