[Libav-user] SMPTE 336m

[Ran Shalit]

On Wed, Sep 10, 2014 at 4:15 PM, Peter Ross <pross at xvid.org> wrote:
> On Wed, Sep 10, 2014 at 03:11:25PM +0300, Ran Shalit wrote:
>> On Wed, Sep 10, 2014 at 2:44 PM, Peter Ross <pross at xvid.org> wrote:
>> > On Tue, Sep 09, 2014 at 04:23:24PM +0300, Ran Shalit wrote:
>> >> >> Are these internal KLV packets sent only
>> >> >> once at the start of transcoding or can be sent during transcoding
>> >> >> more than once ?
>> >>
>> >> >In MXF each *video frame* is stored within an individual KLV packet.
>> >> >So yes, 'more than once'!
>> >>
>> >> Is it possible to retrieve or view the KLV metadata in ffplay ? i.e. I
>> >> want to do some validation check on KLV with XMF, is that possible ?
>> >
>> > Nothing like that is implemented in ffplay.
>> >
>> > -- Peter
>> > (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
>>
>> Hi Peter,
>>
>> Is there any way I can validate that the packets include KLV metadata ?
>
> Nothing like that is implemented in FFmpeg.
>
> You need find a proper MXF validation tool. I can't recommend any, but searching
> the web for 'MXF validator' or 'MXF analyser' returns a lot of hits.
>
>> Or is the only way to do it is by debugging/printing of ffmpeg MXF mux
>> with KLV ,and demux on MXF video with supposed KLV info.
>
> That approach might work. Good luck.
>
> -- Peter
> (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)

Ok, Thanks, I'll go on from this point.
I hope ffmpeg developers will add KLV capabilities to ffmpeg in the future.

Thanks a lot. Ran