ffplay with Havision Makito X video encoder, H.264 stream, and "intra refresh" option enabled

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ffplay with Havision Makito X video encoder, H.264 stream, and "intra refresh" option enabled

Kevin Hise
I'm looking for some ideas about decoding an H.264 video stream
encoded by a Haivision Makito-X encoder and using its "intra refresh"
option.

When the option is enabled (e.g. turning intra refresh "on") the video
decode is delayed by several minutes...perhaps 30 to 45 minutes...I
assume because at some point the encoder randomly ends up sending out
a key frame (?) which allows the decode process to begin decoding.

Up until that point however there is no video. I've tried this in
FFMPEG 4.2, 4.3 and also using VLC....all have the same behavior.

I see lots of comments about ffmpeg supporting intra refresh but
nothing specific to anyone using it with other encoders, so I don't
know if intra refresh is encoder specific.

My question eventually ties into some ffmpeg software that I maintain
that implements a "video wall"...but I don't think is directly
programming related here.

Thank you.

--kev
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Re: ffplay with Havision Makito X video encoder, H.264 stream, and "intra refresh" option enabled

Carl Eugen Hoyos-2


> Am 10.10.2020 um 01:13 schrieb Kevin Hise <[hidden email]>:
>
> I'm looking for some ideas about decoding an H.264 video stream
> encoded by a Haivision Makito-X encoder and using its "intra refresh"
> option.
>
> When the option is enabled (e.g. turning intra refresh "on") the video
> decode is delayed by several minutes

Please provide a sample file.

Carl Eugen
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Re: ffplay with Havision Makito X video encoder, H.264 stream, and "intra refresh" option enabled

Kevin Hise
Err...sample file of what? It's an encoder...a piece of hardware. I've
not tried writing the TS to a file and seeing if that also exhibits
the same behavior...either played back directly from the file or as a
file that's streamed back over the network as UDP to be decoded and
displayed by a player.

Guessing that it's likely 1MB / sec or so...so maybe a few seconds can
be attached as an email. I'll see what I can come up with. Thanks.

--kev

On Fri, Oct 9, 2020 at 4:17 PM Carl Eugen Hoyos <[hidden email]> wrote:

>
>
>
> > Am 10.10.2020 um 01:13 schrieb Kevin Hise <[hidden email]>:
> >
> > I'm looking for some ideas about decoding an H.264 video stream
> > encoded by a Haivision Makito-X encoder and using its "intra refresh"
> > option.
> >
> > When the option is enabled (e.g. turning intra refresh "on") the video
> > decode is delayed by several minutes
>
> Please provide a sample file.
>
> Carl Eugen
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".
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Re: ffplay with Havision Makito X video encoder, H.264 stream, and "intra refresh" option enabled

Reto Kromer-2
Kevin Hise wrote:

>Err...sample file of what?

Of the file generated.

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