12-bit (and 10-bit) RAW video development discussion

[a1ex]

Has there been any further looking into how the losses cr2 raw compression is applied ?

Yes.

[AWPStar]

I just tried to decode 10 and 12 bit's raw files.
http://www.magiclantern.fm/forum/index.php?topic=15271.msg176632#msg176632

I think i can implement it in several days.

[ilia3101]

I don't know if what I have achieved counts as successful, but I think I've got closest to working 12 bit on the 5D2. As we all know raw_rec produces split frames all the time, and I haven't had any success with it, but mlv_rec produces no split frames and only a small bar of noise at the top in 12 bit, or a large one in 10 bit, so I tried to move it down using digital dolly, and it actually got rid of the bar of noise! Clean, 12 bit, 1856x1044, continuous... AND MLV... on the 5D2... with potential to have audio!!! but of course tilt shifted down.

Proof:

If mlv_rec has something that is more functional it could be transferred to raw_rec right? Also there must be a work around to get it in the middle, maybe by adding blank space at the top of the video and making it so that digital dollying all the way down is now the middle? I'm sure this is progress, isn't it?

[dfort]

Posted a new set of test builds of the raw_video_10bit_12bit branch now with the new and improved raw_twk module.

https://bitbucket.org/daniel_fort/magic-lantern/downloads

[dfort]

eos m mlv_lite
1 - All is working but no overlay buttons. Can,t delete etc.

Found the same EOSM issue here. Turn off raw_twk and the overlay buttons are back but of course it doesn't playback 10bit files.

Works fine on the 700D.

[g3gg0]

mlv_rec got a fix for the alternating frame errors with lower bit depths, along with some other stuff that was outdated or simply odd.

[Danne]

Found the same EOSM issue here. Turn off raw_twk and the overlay buttons are back but of course it doesn't playback 10bit files

?
My tests was done around raw_twk module with eos m and other cameras here.
http://www.magiclantern.fm/forum/index.php?topic=5601.msg176617#msg176617
There were never any issues with mlv_play alone on eos m.

mlv_rec got a fix for the alternating frame errors

Great! More than welcome.

[dfort]

mlv_rec got a fix for the alternating frame errors with lower bit depths, along with some other stuff that was outdated or simply odd.

Alternating frame errors with mlv_rec at 10bit are still present on the EOSM and 700D. It seems to be better but I haven't done a regression test.

[EDIT] Oops missed that last commit -- yes, the alternating frame errors with lower bit depths is fixed. Thanks! Now we can record audio with 10/12bit raw video.

Making a new set of test builds.

[Danne]

In already? That is brilliant.

[Teamsleepkid]

Yay for audio

[Markus]

Super awsome! 

[Danne]

5D mark III
Just tested mlv_rec with audio on 5D mark III and both 10bit and 12bit works really good. Very nice. Crop_rec module is also working with audio and all frames looked great. I didn't,t test this very much so more testing.

Eos m
I keep bugging about this cam but its a great little cam that needs all the love it can get.
Records mlv_rec 10/12bit fine. If raw_twk.mo is added and you try to record sound will make the camera crash kind of. There is a faulty message saying 'threads failed to start' I think and then the camera needs to be restarted. If disabling raw_twk everything works, except for previewing 10/12bit files of course.(Yeah, and button overlays still missing with raw_twk enabled)

[g3gg0]

the EOS M has too few thread ids. so this is kind of a known issue we cannot do much about
less modules that use threads would help.
(also reworking modules that they only start/end threads when needed would help)

[Danne]

I see, all in all great working cam delivering continuous 10bit recordings on highest resolution.
Any thoughts on mlv_play buttons? They seem vanished into oblivion once raw_twk starts running?

[g3gg0]

mlv_play issues -> http://www.magiclantern.fm/forum/index.php?topic=9062.0

[andy kh]

Eager to test 10bit mlv on 70D

[Danne]

@g3gg0
Thanks a lot for taking the time on this.
Just to be sure here. Mlv_play buttons(delete, play, pause, scroll etc) If not going through raw_twk. Link you are posting tells me I have to go through file manager instead? Conclusion is that raw_twk can,t maintain the otherwise working buttons?

*Updated more info here
http://www.magiclantern.fm/forum/index.php?topic=9062.msg176677#msg176677

[CITY-U1001]

50D 10bit
last build 10bit_12bit.2016Dec18.50D109
view with MLVProducer

[AWPStar]

@CITY-U1001

I just tried to decode 10 and 12 bit's raw files.
http://www.magiclantern.fm/forum/index.php?topic=15271.msg176632#msg176632

I think i can implement it in several days.

[VanGogh7]

5D mark III
Just tested mlv_rec with audio on 5D mark III and both 10bit and 12bit works really good. Very nice. Crop_rec module is also working with audio and all frames looked great. I didn't,t test this very much so more testing.

Eos m
I keep bugging about this cam but its a great little cam that needs all the love it can get.
Records mlv_rec 10/12bit fine. If raw_twk.mo is added and you try to record sound will make the camera crash kind of. There is a faulty message saying 'threads failed to start' I think and then the camera needs to be restarted. If disabling raw_twk everything works, except for previewing 10/12bit files of course.(Yeah, and button overlays still missing with raw_twk enabled)

Hi Danne, how is the workflow to convert 10bit including the soundfile?  for the MLV I use MLVFS..and for the soundfile named ?? MLV_REC.TMP ??

thanks

[MAG]

New build "magiclantern-raw_video_10bit_12bit.2016Dec18.5D3113"

Tested one 5D mark III 1.1.3 with mlv_rec and raw_twk

Work on 10, 12 bit also in crop mode in high res really nicely ! Also work in slowmo 50p with stretch mode.
Could it be possible to do somethings and record slowmo without stretch in full frame mode ?

dfort, I have no idea how you did it but you are dat king ! Huge deep thanks and respect

[arrinkiiii]

Having the same problems that @Ilia3101 have but with the 7D

Going trie the new version of @dfort

[Danne]

@VanGogh7
Audio is included and revealed automagically when opening the file in mlvfs. Mlv_dump will build a solid wav file as well upon converting to dng files.

@MAG
With the crop_rec module I think it,s posible to record unstretched mv720 mode(not mv1920)

Also if previewing the MLV files with raw_twk enabled please test to go back a few files then forward a few files. Do this a couple of times and see if screen turns black?

[arrinkiiii]

@dfort

With your last version for the 7D it got the same problems... maybe is needed to merge/compile the new update from the mlv_rec that got a fix for the alternating frame errors in lower bit depths.

Thanks=))

[VanGogh7]

@Danne

Thanks, strange, first on my half-full Card ( Komputerbay 64GB ) MLFVS was not able to create a .wav file from the MLV_REC.TMP. After formatting the card now all works fine!