[FFmpeg-devel] GXF Encoder Fixes and HD support

Peter Stevens pstevens at evertz.com
Mon May 5 23:49:09 CEST 2014

Hi Reuben,


If you are have access to/are able to post the patches for GXF HD
support it would be appreciated.





On Tuesday, April 15, 2014 11:09:34 AM Peter Stevens wrote:

> A patch set for supporting GXF HD support was posted a few years back


> ml


> ) but I don't think it made its way into ffmpeg. Does anybody know if

> this something still being worked on? or where I might find a copy of

> the mentioned patch


 I wrote those patches. The biggest issue making me hesitant to push
hard to 

get them merged is that there was no direct means to determine if the

was interlaced or not. The differences between frame and field rates

ambiguous. So 1080i at 29.94
<http://ffmpeg.org/mailman/listinfo/ffmpeg-devel>  frames per sec, would
return the same "rate" as 

1080p at 59.94 <http://ffmpeg.org/mailman/listinfo/ffmpeg-devel>  frames
per sec.


Perhaps that is not the case now, I'm not a regular dev for ffmpeg.
Mostly just 

an avid user. I created the patches to fix the horribly broken GXF 

implementation at the time in order to save myself hours of mind-numbing

importing large files into the old GrassValley Turbo playback machines.

company has since discarded those pieces of junk, so I have little

to do anything more with GXF. The format itself is rather arcane.

intended for utilizing FTP transport. yuck.) GrassValley is the only

I'm aware of that really promotes usage of that format. They wrote the

for it after all...


I probably still have the patches lying around. There were some updates 

somebody asked me to make for it about a year ago. Some of those updates

applied to the trunk. I might be able to find the HD parts that were not

if you really need them.



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