strange HDMI output HM100 at DVinfo.net

Ralph Mooijekind · August 22nd, 2011, 03:33 AM

i tried to make a time lapse with hm100 and nanoflash.
i made a connection between the two devices through a HDMI-cable.

at the end of the day i discovered that the captured image was green-ish and purple-ish. today i did some 'reverse ingeneering' ;-) and discovered that the strange hdmi-colours are related to the 'HDMI COLOR SETTING' of the hm100.

when the setting is set to 'automatic (A)' there's a chance that i get a strange colored image.
when the setting is set to 'RGB' most of the time (not 100% shure) i get a normal colored image.

does anybody knows what's going on?

http://www.dvinfo.net/forum/attachme...1&d=1314005539

Andy Mangrum · August 22nd, 2011, 10:28 AM

Hello Ralph,

Have you had more time to investigate if this only occurs with the Automatic setting?

Say for instance if you power up the nanoFlash with the camera set to RGB then switch to Automatic do you receive the same result?

We suspect this may be happening if the camera is outputting YUV when the Automatic setting is selected.

Also as stated in the JVC Manual on page 63 which I have attached.

Feel Free to contact us directly,

Support Contacts | Convergent Design

Best Regards

Ralph Mooijekind · August 23rd, 2011, 08:41 AM

hello andy,

you CD-guys are great in supporting your customers. thanks for that!

i do share your suggestion that the color inversion is caused by the hm100.

however during another test the image was okay (all devices were switched off in between), but the color setting was set on 'A' (Auto). this might suggest that the hm100 sometimes switches from yuv to rgb in a proper way.
this might not be a reliable way of making time lapses (without having the opportunity to get a real time image by looping through the hdmi-signal).

so i did another test today (powering on nanoFLASH first (HDMI-cable already connected), HM100 powered on next with HM100 color-setting @ RGB). This resulted in a crystal clear image.

http://www.dvinfo.net/forum/attachme...1&d=1314110236

BTW: in time lapse mode: does the nanoFLASH automatically select the iFrame-setting? if not, does it explain the pixelated picture (seen in background) like this: http://www.dvinfo.net/forum/attachme...1&d=1314110236

best regards,
ralph

August 22nd, 2011, 03:33 AM	#1
Ralph Mooijekind New Boot Join Date: Oct 2007 Location: Haarlem, Netherlands Posts: 10	strange HDMI output HM100 i tried to make a time lapse with hm100 and nanoflash. i made a connection between the two devices through a HDMI-cable. at the end of the day i discovered that the captured image was green-ish and purple-ish. today i did some 'reverse ingeneering' ;-) and discovered that the strange hdmi-colours are related to the 'HDMI COLOR SETTING' of the hm100. when the setting is set to 'automatic (A)' there's a chance that i get a strange colored image. when the setting is set to 'RGB' most of the time (not 100% shure) i get a normal colored image. does anybody knows what's going on? http://www.dvinfo.net/forum/attachme...1&d=1314005539 Attached Thumbnails

August 22nd, 2011, 10:28 AM	#2
Andy Mangrum Sponsor: Convergent Design Join Date: Jul 2010 Location: Colorado Springs Colorado Posts: 166	Re: strange HDMI output HM100 Hello Ralph, Have you had more time to investigate if this only occurs with the Automatic setting? Say for instance if you power up the nanoFlash with the camera set to RGB then switch to Automatic do you receive the same result? We suspect this may be happening if the camera is outputting YUV when the Automatic setting is selected. Also as stated in the JVC Manual on page 63 which I have attached. Feel Free to contact us directly, Support Contacts \| Convergent Design Best Regards Attached Thumbnails __________________ Andy Mangrum, Tech Support Convergent Design, Inc Last edited by Andy Mangrum; August 22nd, 2011 at 01:26 PM.

August 23rd, 2011, 08:41 AM	#3
Ralph Mooijekind New Boot Join Date: Oct 2007 Location: Haarlem, Netherlands Posts: 10	Re: strange HDMI output HM100 hello andy, you CD-guys are great in supporting your customers. thanks for that! i do share your suggestion that the color inversion is caused by the hm100. however during another test the image was okay (all devices were switched off in between), but the color setting was set on 'A' (Auto). this might suggest that the hm100 sometimes switches from yuv to rgb in a proper way. this might not be a reliable way of making time lapses (without having the opportunity to get a real time image by looping through the hdmi-signal). so i did another test today (powering on nanoFLASH first (HDMI-cable already connected), HM100 powered on next with HM100 color-setting @ RGB). This resulted in a crystal clear image. http://www.dvinfo.net/forum/attachme...1&d=1314110236 BTW: in time lapse mode: does the nanoFLASH automatically select the iFrame-setting? if not, does it explain the pixelated picture (seen in background) like this: http://www.dvinfo.net/forum/attachme...1&d=1314110236 best regards, ralph Attached Thumbnails Last edited by Ralph Mooijekind; August 23rd, 2011 at 08:55 AM. Reason: ordering cause and result in a better readable way