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you made it! 

Version: Sept19.EOSM
Sandisk Extreme Pro 64GB 200MB/s
Benchmark: 85/85/85/85 MB/s

Actual Recording Speed: 3k 10-bit 2.35:1, E4.3, approx: 74.5MB/s on the yellow continuous, except brightest exposures, momentary peaks up to 77.2 MB/s

No performance gain with 64GB Sandisk Pro Extreme 200MB/s Made in China. Just as another 170MB/s user https://www.magiclantern.fm/forum/index.php?topic=25781.msg240289#msg240289 posted, 240MHz gives 20 MB/s and 190MHz gives 60.5 Mb/s actual recording speed, same as previous build.

No luck for me  SanDisk ExtremePro 170MBs 128Gb "made in China" card here... I hope we can find a fix for those
@192Mhz -> 60.5MB/s
@240Mhz -> 20MB/s

Exact same results by me with Sandisk ExtremePro 200MBs.

64GB one. According to specs is up to 90 MB/s write and 200 MB/s read speed. Write speed spec is the same in theory as the 170 MB/s one.

Is actual M crop_rec build tweaked to 'golden standard' 170MB/s card?

I did. it doesn't make any difference. It ramps to 61-62 Mb/s briefly only to stop recording after 2-3-4 seconds.
Both hacks enabled, 2.8k Bit depth off.

If I'm not mistaken, according to some reports people with Sandisk 170 MB/s get about 3MB/s faster than mine in both actual recording speed as benchmarks. So I'm not sure presets are restricted 60 MB/s, since as far as I know they get 63 MB/s.

[extra 10 MB/s]

@wyup

Try this, it should give you the extra 10 MB/s when using 192 MHz overclock:

crop_rec_4k_mlv_snd_raw_only_2022Jul31.EOSM202.zip

Enable the hacks from RAW video submenu, then report back.

I tried your build (overwrote files in card with yours) but I didn't notice improvement in actual recording speed. I get max around 60 MB/s with my 200MB/s Sandisk card.

[matches]

You don't get 72Mb/s in 192Mhz and 240Mhz don't work on eos m. Around 60 seems right.
If you do benchmark stay in photo mode and also push play button just before bench marking starts.

Anyway, now your result matches 100D/700D with (Sandisk 170MB/s) at the same settings. RAW video recording should get up to 70 MB/s too (at least this happens on 100D/700D).
And again, your SD card seems fine.

I don't know if this an issue related to what things Danne have changed in his custom build which prevent getting 70 MB/s write speed, it could be his implementation/changes to small/new hacks (hacks don't work in some cases while recording RAW video?), or maybe other things?.

Why do Danne and Bilal implementations differ so much with the same Digic5 chip to yield a ~10 MB/s actual recording speed difference between M and 100/700D, when we get the same Bilal's-modified benchmark speeds? Default benchmark speeds also differ a ~10-13 MB/s. Can we expect to equal out?

[worse]

BTW, I tried these on my Sandisk Extreme PRO 64GB UHS-I U3 170 MB/s and it performed worse when I ran benchmarks (using 240 MHz overclock on 700D):

Write speed:
1024 bytes: 82 MB/s
2048 bytes: 88 MB/s
4096 bytes: 89 MB/s
8192 bytes: 90 MB/s (matches 128 KB)

Read speed:
All was ~106 MB/s, no differences here.

Thanks Bilal. I don't know which bench.mo you're using and in which mode.

As for me, at 8192 bytes sector, recording speeds are the same as always: 58-59 Mb/s max sustained. I can't record in 2.8k mode at 10-bit.

I see it's the same Digic 5 chip your 700D and EOS M, and released about the same year (2012/13). Why are your benchmarks so high? 90 MB/s compared to max 76 MB/s with my 200 MB/s card, 70 MB/s in Liveview/Movie mode. Are there many differences between your build and Danne's that can affect card writing performance?

I'd like to know what recording speeds do people get with their cards, specially Extreme 170 MB/s, to know if my mine is underperforming.

Hello, thanks for long MLV work!

I'm a newbie here, can I substitute ffmpeg.exe file from MLV 11.13 win64 zip (n4.4-5-ge3fb0f0c88 version from 2021) to most recent BtbN gpl version (~121MB) expecting full functionality?

Guys, I've found the fastest way to record, I manage sustained 63-64-65 Mb/s (65.7 max) in yellow, 5k frtp 1360x1976 14-bit, almost continous, and 2.8k 10-bit continous.

The trick is to format externally with lowest possible sector size. I've found out physical sector size of SD card is 512 bytes. You find out with 'fsutil fsinfo sectorinfo volume:' in Windows. From there, manual format to minimum camera bootable, which I've found is 1024 bytes. I format with this command:

FORMAT /FS:EXFAT /A:1024 /Q  G:

and then copy your ML filesystem and install.
It takes some 15 seconds to boot. Also I've found that sometimes at first it stops recording, but next time it gets to full 63 MB/s.

The first sector size I tried was 4096 bytes, it booted normally and it seemed already faster. 1024 is stable enough for me and the fastest.

EDIT: This trick *seems* to freeze ML debug memory info submenu. At 1024, it takes +12 seconds to boot. At 2048, it takes some 8 seconds to boot. At 4096, the lowest selectable from windows format ui, it boots normally and speed sets to ~61 MB/s. With stock in-camera format (128k sector), recording speed drops again to 57-58 Mb/s.

I think there is something to look upon on ML software regarding low level card writing strategy, we're talking about 5-8 MB/s faster writing with smaller sector sizes.

EDIT 2: I think the improvement is with just formatted card. As long as I record, speeds seem to return to normal.

Run benchmarks in video mode, in LiveView with this bench.mo, not Play mode.

1st:  W: 70.3  R:71.5
2nd: W: 70.9  R:70.0

+malloc errors

Benchmark test with Bilal's 'bench.mo', from Photo mode + play button as Danne says, I get:

1st: W: 75.8 R:85.9
2nd:W: 76.0 R:86.0

Recording without modules, raw submenu> small hacks: af OFF, more hacks: lvface + aewb, Use SRM memory ON, kill global draw ON, aspect ratio: 1:1, resolution: 1360x1976, rest: 5k anamorphic frtp, sd overclock 192MHz, sound recording OFF,overlay global draw OFF, 14-bit

Average recording speed: 57-58-59 Mb/s, MF, ME, ISO 3200, bright exposure lasts for ~6 seconds.

Yes, I did low level format from Canon menu.

[only]

@wyup

I didn't ask to test other overclocking presets.

Are using 192 MHz or 160 MHz overclock here?

Just to make sure, are these speeds (59-60-61 MB/s) are coming from card benchmarks or RAW video?
These hacks will have an effect only while recording RAW 14-bit video, it won't have an effect while in Idle.

Check the write speed reported by RAW video while recording, like this image, take a picture for camera screen using smartphone and show me the picture.
If you can record a video showing what are you doing (your camera settings), that's would be better too.

~72 MB/s while recording at the same settings (192 MHz overclock).

These speeds (59-60-61 MB/s) are coming from RAW actual video scene shooting, at standard 192 MHz, (lvface + aewb) hack, and as I said, in practical recording, not benchmarking. Of course, it is the small corner screen reading, none otherwise.
I'm trying 5k frtp, raw ON 1440x1810 1:1, Kill global Draw ON, lvface +aewb ON, ratio 2.39:1, sound recording OFF, Global Draw OFF, rest defaults.
I'm using MF, Servo OFF, Manual Exposure, ISO 100, about 1/60, F8, exterior, white wall optimal exposure.

Is there any other max bitrate mode or best setting to test?
I'm still far from 72 MB/s.

 

Okay, your SD card performs as 170MB/s version in 192 MHz, which mean you reached the maximum possible write speed when using 192 MHz overclock (your card is fine).

Back to your question, why you only get ~57 MB/s during RAW video recording?

-Enable the new hacks (lvface + aewb) from RAW video submenu, see:

Code Select Expand

https://youtu.be/a8FM_nlA8R8?t=39

Report back.

You can also use lower bit-depths (this will reduce required write speed).

With (lvface + aewb) hack, benchmark speed results are the same. With 240 MHz, results drop to ~20 MB/s. With 160 MHz, results drop to 67/74 MB/s.

In practical recording, (lvface + aewb) hack enabled, 5k frtp 2.39:1 14-bit, I can't get past 59-60-61 MB/s, I can record up to ~10 secs. With 12-bit, I can get almost continous recording.

How much practical recording speed do you get with 170 MB/s Sandisk Extreme Pro?

Sandisk Extreme Pro 64GB SDXC UHS-I 3 V30 - 200 MB/s 90 MB/s
Canon EOS M, ML 2022 May 30

HD 1080p, RAW OFF, Sound OFF, Global Draw OFF, 192 MHz
In Play Mode:

PHOTO MODE:

1st test:  1st pass:  W: 76.1 MB/s   R: 85.9 MB/s
              2nd pass: W: 75.7 MB/s   R: 85.9 MB/s
2nd test: 1st  pass: W: 76.1 MB/s   R: 86.0 MB/s
              2nd pass: W: 75.0 MB/s   R: 86.0 MB/s

VIDEO MODE:

1st test:  1st pass:  W: 75.7 MB/s   R: 85.9 MB/s
              2nd pass: W: 75.7 MB/s   R: 85.9 MB/s
2nd test: 1st  pass: W: 75.2 MB/s   R: 85.9 MB/s
              2nd pass: W: 76.1 MB/s   R: 85.9 MB/s

Start benchmark in photo and video mode. Immediately after starting press "Play" button.

I can't enter ML menu from Playback mode in any photo or video mode. Even if I inmediately press "Play" button upon upon starting.

In practical recording I can't get past 57 MB/s.

I have no way to enter ML menu in PLAY mode. I can only enter ML menu by pressing down/trashcan in LiveView mode.

I've run two benchmarks as you say, in HD 1080p, Global Draw off, Raw video off and sound recording OFF.

1st test:  1st pass:  W: 59.7 MB/s   R: 64.3 MB/s
              2nd pass: W: 60.0 MB/s   R: 64.1 MB/s
2nd test: 1st  pass: W: 60.0 MB/s   R: 65.2 MB/s
              2nd pass: W: 60.4 MB/s   R: 65.6 MB/s   

Hello,

I've just bought a new recent 64GB Sandisk Extreme Pro SDXC UHS-I 200 Mb/s 90 Mb/s for my new EOS M/15-45 combo and I don't get more than 56-57 Mb/s (red and yellow) on live recording at 5k frtp 16:9, default 190 MHz, for a few seconds for dark scenes, two seconds for brighter ones. If I choose any other frequency, speed drops.
I tried manual pc format up to 512kb cluster size exfat, to no improvement.

I was expecting 70 Mb/s as I read somewhere with regular 170 Mb/s Extreme Pro. I don't know if this new card works well with ML.