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Messages - kuga0509

#1
I know that Clean HDMI has been a hot topic for all of the canon cameras over the last several years - especially the 6D.  While I have been a programmer for 16 years, I have never gotten into firmware development - so I apologize in advance if what I am about to say has been discussed.  But here it goes...

In the playback section of the 6D, Canon pushes HD video to fullscreen NATIVELY while the video playback overlay remains in 3:2. For pictures, it black bars the sides and scales them into 3:2 WITHIN a 1080i frame.  This is unlike the HDMI out LiveView as it sends a 1080i image with video WITHIN black bars. So my question is, could the secret to Clean HDMI out be hidden in the settings for playback?  I mean, if this has to do with finding the appropriate register settings (apologies if my terminology is incorrect for assembly), then wouldn't the appropriate setting be revealed within that portion of the firmware?

And if so, then enabling/hijacking that setting for LiveView would give external recorders uncompressed 1080p at 16x9... :)
#2
Reverse Engineering / Re: UHS-I / SD cards investigation
February 05, 2015, 06:37:45 AM
Any luck on this?  Before I even read this thread, the only logical limiting factor I could find seemed to be that the software was limiting the hardware.  Since the hardware should support the SDR104 standard, and since the voltage and all of the other requirements would remain the same, it really seems that simple.  I hope this works out.  :)

The only other solution would be to load a different h264 profile to change the color space.  I know that isn't raw, but it may at least get the desired bit depth.  However, that would still require this same issue to be resolved since it would likely require a higher bus speed...
#3
Archived porting threads / Re: Canon 6D
February 05, 2015, 06:28:04 AM
Quote from: javapop on February 05, 2015, 02:01:04 AM
I have used ML off and on since getting a 6D last summer. I have been using PNY 90MB/s 64GB cards for shooting regular 1080 footage with no problems over the past year. I have mainly used ML for the enhancements to audio and overlays.

I tried shooting RAW a few weeks back, and found I was getting what appears to be buffer errors. The recording stops after just a few seconds.

Is there a list of confirmed cards that handle RAW and the highest setting you can shoot RAW at on the 6D

Thanks!

For the last several weeks I've been scouring the forums looking for anything I could find on the 6D raw capabilities.  I decided to go ahead and join the board today so I could help contribute since I have just added a 6D to my gear bag.  So to answer your question, it looks like the bus speed of the SD slot is the limiting factor.  It looks like most people are only achieving about 40MB/s regardless of video format. 

However, what I am most interested in is the post where a person is looking into changing the bus configuration to the fastest UHS-I standard.  This could mean that the 6D may one day be capable of up to 104MB/s.  According to the standards for UHS-I, the hardware supports this speed if the software controller tells it to go that fast.  Right now, it is limited to 50MB/s theoretical performance. 

So, at most, 104MB/s is the fastest that will ever be achieved and likely the 90MB/s cards will be able to handle the fastest real-world speeds possible if someone ever figures out how to open up the fast lane of the SD bus.  Hope that helps you decide on a card, javapoop! :P