Messages

I've wrote a tutorial about processing RAW files with After Effects and Camera RAW, you can find it here :
http://www.gna-productions.com/tutos/how-to-process-magic-lantern-raw-videos

I've also done some comparisons between RAW and H264 with different picture styles this week, if you're interested here is the video :

Great tutorial, and a nice video too, thanks

I think you have lost rationality.

=) maybe so, perhaps you can explain why it is called a lossy compression then if there is no loss?. All I was saying (and this would not have made his/your workflow anymore complex) is save to tiff or png instead, its absolutely no harder but gives you zero loss.

For the record an 8 bit jpeg has by definition less information than the raw file. Still a lot more than H264 though, so you are both right....
On a side note, 650D will support proper dual iso. Say hi to as much DR as our friends at nikon :-)

Awesome news!

It is still not visible. You have to do it 50 times and more to see a difference.

Visibility it would show up waaay before recompressing 50 times. plus If you are not worried about the compression, then why on earth would you bother shooting in raw in the first place? a big benefit of raw is that there are no compression artifacts. (especially for me as i mainly use raw for greenscreen) let me make it clear that I understand that lack of compression is not the only advantage to raw but my original point is why waste such an advantage by using jpg as a middle man?

If you are shooting in raw it is because you want the footage in the very best condition possible. jpg WILL deteriorate the quality.

But there is no visible quality loss.

maybe not visible this compression round, but next compression, and subsequent compression it will be more and more visible. lossy compression should only be applied at final rendering stage.

what i did:
1) i used raw2dng first to get dng files.
2) used pink remover tool to clear em.
3) opened dng's with PS6 and did some adjustment
4) extracted jpg files (which is downed to 8bit)
5) renamed the jpgs' with "bulk rename utility" (google it)
6) files are joined and mp3 added to auido with virtualdub. now i got a 1600x600 non-comp avi. sized almost 5gb.
7) avi file impoted  into after effects.
file interpolated to 1920x1080 (1920x720 actually)
9) extracted again non-comp avi. 13.7gb - ~195mb/s bitrate

That seems a lot of work, here's what I do.

1) PDR raw file
2) raw2dng
3) import dng into after effects (making colour adjustments here)
4) render out uncompressed into clips.
5) join clips in video editor and render out in h264.

You should never at any point in the process save to lossy compression (jpg) and I am not sure of the benefits of interpolating to 1080p, most players upscale nowadays anyway.

I'm also not sure of the advantages of uploading raw video to youtube, I'm pretty sure that if you (final)render in h264 , in one of the correct sizes/bitrates for youtube it doesn't re-encode anyway.

But you are right its much more work that h264, and unless you have a specific reason to shoot in raw, do not bother. if you really really need the extra dynamic range etc then its worth the extra workflow. otherwise h264 is 100% fine.

here's an example of my raw processed that way.

[standard canon menu]

Would it be possible for you (or anyone)  to outline your settings for doing this.  As you might see above 1280x720 does not appear for me.  So maybe I have some setting incorrect.

I see from many searches that people like your self have gotten 1280x720.

I assume for starters that the 24fps is set in the fps override.

thanks in advance & sorry to be a pest.

dave

All I did was made sure that my video mode was set to 1080p 24fps in the standard canon menu.  then it allowed the higher resolutions.  The raw mode overrides the res but the FPS has to be set in the canon menu.

I found the comment below in another forum.  It implies only 560.  So are you guys really getting 1080 x 720?

I can get 1280*720 out of my Sandisk UHS1 card, but only at 24fps, thats a big factor, if you are shooting even at 25fps you'll get dropped frames or recording will stop.

RAW video is only for advanced color correction and grading, nothing more nothing less, not increasing quality and dynamic range that cheapest camera.

I recently used the RAW mode to shoot some 720p greenscreen footage, as no (lossy) compression is being applied it results in a MUCH better keying. I was shooting an actor in portrait mode and rotating into landscape so I actually had in excess of 1080p res vertically (1280p effectively) . which was perfect for my needs. please don't assume because YOU don't need it, that it isn't useful.

You've got to use the PinkDotRemover Tool (http://www.magiclantern.fm/forum/index.php?topic=6658) to remove the dots. It's a bug with the T4i and EOS-M (as well as the t5i I'm assuming) due to the new autofocus tracking point system.

Thanks but I was referring to the fact that minlite13 specifically said he didn't use that tool, upon further inspection of his video (ie in 1080p ) you can still see the pink dots too.

I don't get what are you trying to say by "Absolutely Useless feature".  If it's a feature then it's not useless. Despite the fact that, the whole of us have agreed that it's a great feature and Magic Lantern team is including it in their builds.

I just posted this early test video here to sum up what is done until here on the development of the feature, because all the test videos were recorded using the old 1.0.1 version.

And I assume this is nearly a dev topic. So please don't spam by saying thing like "This feature is useless", "What is it? What is that?" ,..

I agree RAW is a useful feature, I only have a very few uses for it but I'm glad its there when I do. I saw on the description of your vid that the pinkdots are gone, is this true? this will be great if it is!.

I plan on testing asap.

I see the ML team have now got duel-iso working on the 6d and others, I wonder if we'll get it on the 650d too?

EDIT: Just tested and I still get the pink dots =(

Nice!, I was still on 1.0.1 so didn't need to update but thought I'd test it anyway.

Upgrade went fine following the simple steps above, and then for my second card I just formatted and copied over all the file apart from the .fir file

this has the raw viewer module too which I didn't have before, so got a nice surprise!

great work guys and thanks again!

Thank you so much to all the devs, crop video mode is simply the best, what a simple and yet massive addition to the cameras abilities.

I managed to catch a cloudy full moon with it using just a 135mm lens. (remember to watch in HD)

I've Just had a quick play with crop video mode.

very nice indeed, I have a single hot pixel whenever using it though, is this a known issue? its certainly a tiny problem.

Anyway I've knocked up a quick video, can the more knowledgeable among us tell me if my theory/numbers are correct or if I'm talking nonsense  apologies for the poor quality and subject matter, it was getting dark at home but I still really wanted to test it.

thanks

It's not really a problem, just thought I'd share to you sir/siress:
In ML go to "Prefs" (the monkey wrench icon) > "Image review settings" > "Quick Zoom" it should say "SinglePress -> 100" set it to what your heart desire.

Aaaah, thank you so much. so not a bug but a genuine feature!, this firmware is amazing. Guess I need to wade through more of the options. Thanks again.

I've noticed a tiny bug, not sure if it effects anyone else.

The "+" zoom button is "sticky" when using ML.

if I click it to zoom in on a picture it zooms all the way in, as if I'm holding it down. but it only does this when using ML.

I used the same card, but formatted and removed ML and the bug was gone. I then reinstalled it an back came the bug =)

It's not really a problem, just thought I'd share.

Huge thanks to all the people involved in this project, I've played with a couple of builds and am loving some of the extra features. (especially sokoban  )

Can I ask a question about raw and its benefits when shooting greenscreen?

I want to do some green screen shooting soon, I'm assuming raw would be ideal for this. but at the lower resolution (<720p instead of 1080p) will it still be noticeably better to hang on for raw?

I imagine that increasing the bitrate to 1.3X and then scaling the compressed 1080p video down to 720p will reduce a lot of the problems introduced by the compression.

or does the h.264 compression on the 650d do more than just reduce pixels, does it lower bit count for each channel too etc?

Sorry if this is slightly off-topic!