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Messages - Yoshiyuki Blade

#51
I was messing around with the audio + video recording and had trouble syncing it up. After a quick search, I found that this was a general issue with ML's audio recorder ever since it was introduced, and that 1% investigated it for a bit. I wonder what's going on here. Even if I adjust the sample rate to some arbitrary value to sync it up perfectly, I don't think it'll guarantee sync at other parts of the clip. Testing the video frame rate with a stopwatch showed that it stays smooth and steady. Is there some kind of syncing process that happens in real time for normal recording? That might be why recording with audio on cost such a huge amount of overhead versus recording it separately lol.
#52
Raw Video / Re: Raw video on 5DMK2
May 18, 2013, 09:56:23 PM
Quote from: pholler on May 18, 2013, 09:44:20 PM
@Hazer: You are doing 1920x on the 5D2? 1880 is the maximum width on the 5D2. Are you using a 5D3?

Crop mode goes to 1920 and even higher. You can zoom in with the AF point selection button to record in that mode (at the upper right-hand corner, within thumb's reach). Also note that its stuck at ~30 fps unless you change it with FPS override.
#53
Raw Video / Re: Raw video on 5DMK2
May 18, 2013, 06:20:32 PM
Quote from: pholler on May 18, 2013, 04:56:36 PM
I just managed to get the screenshot. Here is the benchmark for the Lexar 1000x, 5D2, LV on, GD off:

Indeed, it's kind of unfortunate that this seems to be our limit. But at the very least we can manage something close to a 2.35:1 ratio.

When I inquired a1ex about this limit, he says it's not safe to assume anything, but that was a few days ago: http://www.magiclantern.fm/forum/index.php?topic=5247.msg34263#msg34263

I'm not sure if all signs point to a hardware bottleneck just yet, but I haven't heard any good news about this as of yet.
#54
Raw Video / Re: Raw video on 5DMK2
May 18, 2013, 04:30:48 PM
Quote from: pholler on May 18, 2013, 04:08:51 PM
I thought it's gonna be more on the 5D2. The CF-Benchmark gives me 79 MB/s with 2048k-Buffer. The RAW-files are quite big, so these 79 MB/s should be realistic during RAW Video, shouldn't they?

You did the benchmark in playback mode, which makes it read/write faster than it actually does. Try again with the liveview open and global draw off. Turn off any auto power off functions if it shuts off before the benchmark finishes.

This will actually be useful to know since we haven't seen too many benchmarks of the 5D2 with a 1000x card, but the results I've seen so far have been low and I'd expect similar results.
#55
Raw Video / Re: Raw video on 5DMK2
May 18, 2013, 03:52:52 PM
Quote from: pholler on May 18, 2013, 03:47:26 PM
Hey guys,

i just received the Lexar 1000x for RAW video. I am a bit disappointed. I thought i could get 1880x1250 with the best card on the market. Well i made some tests now with global draw off. The best resolution possible with the best card on the 5D2 seems to be 1880x840 with 63 MB/s writing speed for continuos filming.
The card should do better. Shouldn't it? Could anyone achieve a better resolution than that?

I used the May 17th build.

As far as I can tell, that's pretty much within expectations for me. Some tests on the 5D2 showed about 65 MB/s, which is probably the limit of the camera. 1880x1250 requires over 90 MB/s which is pushing it even for the 5D3.
#56
Raw Video / Re: Raw video on 5DMK2
May 17, 2013, 04:40:09 PM
Quote from: avasarin on May 17, 2013, 03:36:38 PM
So we have to hope for a stable 1880x1250 or 1:1 RAW recording?

Depending on the 5D2's hardware limits, full frame recording may not be feasible no matter how fast the CF card is. I've only seen a couple benchmarks of a 1000x card on a 5D2, but they've only reached about 65 MB/s which can get us up to 1880x840.
#57
Raw Video / Re: Raw video on 5DMK2
May 17, 2013, 03:27:21 PM
Moire and aliasing are core artifacts caused by line skipping and there's probably no way around it besides recording in 1:1 crop mode. The artifacts are probably more pronounced at 1280x720 due to the fact that it's magnifying a portion of the 1880x1250 full frame.

It's not unlike compression artifacts when encoding. High resolution video can still look better than low resolution video even both are blocky because the blocks of the high res video are smaller.
#58
Quote from: kgv5 on May 17, 2013, 06:51:47 AM
Yoshiyuki Blade, nice try, did you use twixtor to make frame blending (I assume you had 12 light and 12 dark frames)? Could you please briefly describe your twixtor workflow? I am using it with normal clips with no problem but somehow I cannot blend DNG's.

No frameblending was used. I just threw together a bunch of nonsensical settings in Raw Therapee until it looked cool and applied the settings to all the frames in a batch. I'm uploading a compressed-but-way-better-than-Youtube clip atm and will edit my post with the link.
#59
An attempt to do hdr, but I'm not very good with PP:



It's kinda surreal being able to capture clouds in the sky without underexposing the shadowy areas too much!

Though it doesn't show on Youtube for obvious reasons, most of the things my brain instinctively looks out for doesn't exist anymore! Blocky, muddy or clipped shadows and blotchy textures are now very, very clear and detailed.

edit: The video compressed to BD specs: https://mega.co.nz/#!zQVCQQCS!czx6vEM2zxZqcNH-OE9dQTgbyUBeqG6sFXfulxQlUBo
#60
Quote from: ajay on May 15, 2013, 03:29:02 PM
I'm not seeing those options (1880 x 1080 or 1880x1152). Is there something I need to set? I also have no idea how to use crop mode. Can you explain?

Those are the limits of the 5D2 (well, it can go up to 1880x1250 in normal mode) so those exact resolutions probably won't show up on the 5D3.

I'm not sure if my vocabulary is correct, but by crop mode I mean the zoom mode. You press the AF point selection button, which is the upper-right-most button on the 5D2 (next to the star). I don't know where it is on the 5D3. These buttons also double as a zoom in/out feature.

At the moment, the zoom mode is stuck at ~30 fps, but can be changed with FPS override. Once you're zoomed in and have the desired FPS set, you can record RAW from there.
#61
Quote from: ted ramasola on May 15, 2013, 03:06:52 PM
Yoshiyuki,

What brand and specs of CF card are you using? You shot that on a 5d2 right?

Yeah, its with a 5D2. I used a Sandisk Extreme Pro 16GB 90 MB/s (600x). The benchmark gave me 54-55 MB/s write so it's just enough to do 1880x720 in normal mode, 1920x720 in crop mode.
#62
Quote from: ajay on May 15, 2013, 02:27:15 PM
For those who are interested in the performance of the Transcend 32GB, 1000x. I reran the test with global draw off and in liveview:

AJ

Interesting. So it can do 86 MB/s, but still can't quite do full 1080p? What does the raw recorder say when you set it that high? For the 5D2, it says it needs 81.2 MB/s for 1880x1080 and 86.6 MB/s for 1880x1152.
#63
Did a couple tests. Nothing particularly special here, I just splashed some water on tree leaves and shook them around a bit:


As expected, the quality is still butchered a bit in this low motion video. The first clip is in crop mode and the second one in normal mode. You may notice that the video "judders" a couple times near the end of each clip. Not sure what's causing it.

Testing out Mega for file hosting. Never tried it before, but let's see if it works. This one was arbitrarily encoded to BD specs and looks much, much better.
https://mega.co.nz/#!eJsWWARR!T_0A3AH4IW7Ec71kncXg5x1dV2ZenFu2o1OkXJ-hN-8

I'm not gonna post the lossless RGB source because this video isn't particularly interesting and that it's nearly 5 GB lol.
#64
Quote from: ajay on May 15, 2013, 06:25:56 AM
In practice I have found 1920 x 840 seems to work flawlessly, greater than that eventually skips frames.

AJ

You gotta be in liveview video mode for a more realistic benchmark. It appears you tested this in playback mode (and as mentioned, turn off global draw to maximize your card's performance in liveview). At the rate resolution you stated, you're getting more than 64-65 MB/s, but less than 80ish.
#65
Quote from: olik on May 14, 2013, 10:23:20 PM
well I can record 1880x720 on my mk2 with 600x cards without problems, so this indicates that the bottle-neck is not the card. :-/

Yeah, I think it depends on whether or not he had global draw on. Like a1ex mentioned earlier, the benchmarks will tell you the truth. Another user benched about 65 MB/s on his 5D2 with a 1000x card, so it should be able to handle at least a step higher than 720. Though it's not a huge improvement it's still an improvement!
#66
Quote from: ajay on May 14, 2013, 05:33:17 PM
Tried some tests this morning with the 5DM3. I am noticing vertical banding in blurred backgrounds. They appear on the dng files. Anyone else seeing this?

V2.3.NEXT.2013May14.5D3113, Build:2013-0514 00:26:08

AJ

I've noticed this a few times on the 5D2. I've always assumed that it was an artifact from line skipping. Now that it's no longer smeared to death by the default video modes, it becomes clearer.
#67
Quote from: olik on May 14, 2013, 02:45:18 PM
I did my first tests with the http://bit.ly/10TBM7a 5dmk2 double buffer from coutts version. I have 90mbit/sec sandisc cards (about 600x). Only with 1880x720/25fps and global draw off can I record without dropped frames. Is the limitation the CF card or the 5dmk2 hardware (buffer?).

Great work folks!

My card's the same brand/speed and my limits are the same, which tops out at approx 55 MB/s. Another user posted a benchmark with a 1000x CF card but it topped out only around 65 MB/s. Overall, I'm not sure what the 5D2 is still capable of and would like to see if anyone else managed to get higher rates somehow.
#68
Quote from: g3gg0 on May 14, 2013, 01:22:59 PM
yet audio recording is not scope of this module, i (and i bet alex too) didnt try too much.

Ah indeed. I understand that audio is not the focus your efforts atm so it's not a big issue for me either. I was curious to see how much "overhead" the audio recorder would add while recording RAW and it turns out to be virtually negligible. The syncing issues might've existed before RAW recording too, but I never explored it. After fooling around a little more, I needed to adjust it to about 46.8KHz to look reasonably synced in the ~1.2 mins my card does in RAW.
#69
Regarding audio recording with the raw footage, is there some kind of nonstandard sample rate that the audio recorder goes by? I could not properly sync the audio with the video no matter what at 48KHz or 44.1KHz, but if I set it to something weird like 46.6KHz, it was kinda close to sync. The footage in general is kinda jumpy and has weird stutters (not frameskipping, the module reported no dropped frames and the buffer was never exceeded) so idk if the weird jumps could cause a problem with the audio sync or if the audio is messed up too.
#71
Quote from: NtiT on May 14, 2013, 07:49:34 AM
I feel like an idiot, but can you run me through the entire process like I'm 5?

Click and hold the mouse button on the raw file (ex. M0000000.RAW), move it on the top of the raw2dng.exe icon and release the mouse button. It should start making .dng files immediately. Make sure you have both the program and raw video file in a folder and not your desktop since it'll produce hundreds of files.
#72
Quote from: NtiT on May 14, 2013, 07:40:26 AM
Anyone succeeded with raw2dng on 64bit Windows? Windows 8, if it makes a difference.
I get an "Unsupported 16-bit application error" message.

Works fine here. I also have win8 64-bit. It works by a simple drag-and-drop as people mentioned.
#73
After playing around with raw recording on the 5D2 for a bit, it's great! The crop selections predict the resolutions the camera/CF card can handle pretty much perfectly. I can record 1880x720@24p continuously with my 600x sandisk card, which gave me 54-55 MB/s from the benchmark. Raising the resolution a tad would eventually cause the buffer to fill up and frameskipping to occur.

I'm still a little hesitant on getting a bigger and faster card since I don't know how well it will scale with this camera. We need something like 80+ MB/s to do 1880x1080 which is quite a ways away from 55. Anyway, just when I thought I couldn't be any more amazed by what ML enabled for our cameras, this beast of a feature goes out to the wild! Thank you everyone for making this happen!
#74
Quote from: coutts on May 14, 2013, 12:49:27 AM
This should work for 5d2, double buffering enabled:
http://bit.ly/10TBM7a

extract the MODULES directory into /ML/ on your card

Aw yeah, thanks coutts! I'm testing the waters atm but if all goes well, I'm going to find something with a lot of detail to share with everyone. Today isn't breezy so no swaying tree leaves. I'll probably record sprinkler droplets or something.
#75
Quote from: a1ex on May 13, 2013, 11:51:40 AM
Did some small adjustments and seems to work very well on 5D2.

Theoretical figures for the 1000x card, at 24fps, based on Coutts' benchmark (64MB/s):

- 1880x840 in full-frame mode (with line skipping)
- 1920x840 or 2152x720 in 1:1 crop mode (zero moire)

With my 266x card, I get 21-22MB/s, so... 720x720 :)

Is it safe to assume that the 5D2 has some kind of bottleneck before reaching 1000x speeds, considering that other cameras seem to allow much higher rates at that speed? I have a 600x sandisk card and the benchmark topped out somewhere around 50 MB/s for writing. I'll probably edit this post with the benchmark.

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