Stable MJPEG and AVCHD settings

Vitaliy Kiselev

Vitaliy Kiselev

Carbonite Member
Only expirienced testers are allowed to post here.
All good settings will be accumulated to first post, and deleted later.

1) PappasArts settings (see his thread for more details)

Settings for achieving 1440X1080-30P Finale V.1 [ CLASS 10 HIGH QUALITY CARD NEEDED ]
MJPEG 1280p width - input 1440
MJPEG 1280p height - input 1080
MJPEG Encoder 1280m-1920m - checked
QUALITY SETTINGS [ 384, 330, 300, 276 ] TABLE SETTINGS [ 24, 24, 24, 24 ]

HOW TO SHOOT 720P/30 IN 80Mbits MODE

QUALITY SETTINGS [ 384, 330, 300, 276 ]
TABLE SETTINGS [ 24, 24, 24, 24 ]
This mode give you a glorious 720P at a very high bit rate.

2) Paul Shields Settings, 1280x720

I did also find settings that were giving me over 70Mbit/sec without issues.
E1 256, E1 table 8, E2 256, E2 table 8, E3 256, E3 table 8, E4 256, E4 table 8.
If you set the table values to 5,5,5,5 then as well as recording ok it also plays back nicely in camera. The footage I've shot shows bitrate around 34Mbit/sec.


P.S. Note lens used can affect maximum usable bitrate because camera perform geometric, CA and vingetting correction for many Panasonic lenses.
Best is to use manual lenses for tests.
 
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AVCHD STABLE SETTINGS FOR 1080P

C Settings:

-Video bitrate adjustment - c)50000000
-Overall bitrate adjustment - c)52000000
-Limiting bitrate adjustment - c)60000000

AVCHD STABLE SETTINGS FOR 720P
jobless said:
If you shoot in 720 60p mode, D settings probably won’t work with high detailed scenes and camera will interrupt recording after few seconds. For 720 MODE use the following settings that will work without problems:

Video bitrate adjustment - 38000000
Overall bitrate adjustment - 40000000
Limiting bitrate adjustment - 42000000

For these settings avg. bitrate in 1080 MODE is 34.4 Mbps and for 720 34.5 Mbps.
There are no problems with recording of any kind either with 1080 or 720.
No MUD with this setting also.
I should say that these are stable settings and I would recommend them for normal users that want to shoot with 1080 and 720.
Click to expand...
Jobless's thread on AVCHD Settings: http://www.dvxuser.com/V6/showthread.php?p=2012634#post2012634

OTHER AVCHD SETTINGS TESTED (YOUR MILEAGE MAY VARY)
http://www.dvxuser.com/V6/showpost.php?p=2014197&postcount=132
-Video bitrate adjustment - 60000000
-Overall bitrate adjustment - 56000000
-Limiting bitrate adjustment - 60000000

Originally posted here: http://www.dvxuser.com/V6/showpost.php?p=2015997&postcount=266
***WARNING***
Your results might be different and these settings might yield card errors.
The two cards yielding the fewest card errors seem to be the
Sandisk Class 10 and Panasonic Gold Class 10 cards.
​
 
The best, and most stable, AVCHD settings I have found so far are 50,52,60 (the "c" suggestions) with Native 24p not checked. I am using Transcend 16GB class 10 cards. With the Sandisk Ultra MCXXLV Sooper Dooper Card you probably could get away with the 60,62,70 settings.

The Transcend class 6 cards fail occassionally with a write error with the 50,52,60 settings. The 60,62,70 settings fail occassionaly with the Transcend class 10 cards.

Native 24p checked produces rogue frames (spikes) with all settings, even factory default settings.

Fast shutter speeds (e.g. 1/500) increase I frame size considerably, but not the overall data rate, so I assume the IQ suffers somewhat. High sharpening (which is a complete waste because it can be better done in post) and low noise reduction (setting the NR a little higher might actually be a good thing) settings do too, although not as much. OIS and autofocus appear to degrade the camera's ability to write to memory somewhat - probably because they stress the CPU.

So for me optimum settings are 50,52,60 - Native 24p not checked. These settings work no matter the subject, or how much I zoom the lens in and out, when OIS is on, autofocus is on, auto exposure is on, shutter speeds are high (1/500), NR -2, and Sharpening +2. That's as close to a worse case scenario as I can come up with.

Chris
 
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cbrandin said:
The best, and most stable, AVCHD settings I have found so far are 50,52,60 (the "c" suggestions) with Native 24p not checked. I am using Transcend 16GB class 10 cards. With the Sandisk Ultra MCXXLV Sooper Dooper Card you probably could get away with the 60,62,70 settings.

The Transcend class 6 cards fail occassionally with a write error with the 50,52,60 settings. The 60,62,70 settings fail occassionaly with the Transcend class 10 cards.

Native 24p checked produces pulses with all settings, even factory default settings.

Fast shutter speeds (e.g. 1/500) increase I frame size considerably, but not the overall data rate, so I assume the IQ suffers somewhat. High sharpening (which is a complete waste because it can be better done in post) and low noise reduction (setting the NR a little higher might actually be a good thing) settings do too, although not as much. OIS and autofocus appear to degrade the camera's ability to write to memory somewhat - probably because they stress the CPU.

So for me optimum settings are 50,52,60 - Native 24p not checked. These settings work no matter the subject, or how much I zoom the lens in and out, when OIS is on, autofocus is on, auto exposure is on, shutter speeds are high (1/500), NR -2, and Sharpening +2. That's as close to a worse case scenario as I can come up with.

Chris
Click to expand...


I can film normal real world stuff with 60,62,70- however the star chart causes the write error. 50-52-60 are good. In another thread moments ago it was posted that they did 50-52-60 settings with a GOP4 and preliminary results showed a jump in Mbs. I havn't tried it out yet.

Pappas
 
I've cleaned up this thread, please post your results testing other settings and if enough people find them stable I'll add them to the second post. Hopefully this clears up some confusion.
 
By the way, I did not change GOP settings - I left the 1080 GOP at 15, which corresponds to the standard 1/2 seconds between I frames when using the wrapped (Native 24p not checked) mode. I haven't noticed that changing the GOP makes much difference in quality one way or another.

Chris
 
Transcend 6 16GB stable settings

Transcend 6 16GB stable settings

Here are the following stable AVCHD settings I have found for my Transcend Class 6 16GB card. I am testing with the 14mm-140mm lens kit.

(The first column denotes max Mbps, as shown on Windows, found on one of my clips)
26mbps -> 28,30,34 Native 24p/25 ON
29mbps -> 30,32,36 Native 24p/25 ON
31mbps -> 32,34,40 Native 24p/25 OFF
33mbps -> 38,40,42 Native 24p/25 OFF (720P fails while zooming with AutoFocus but zooming is OK with Manual Focus, 1080P solid so far)
35mbps -> 40,46,50 Native 24p/25 OFF (720P fails while zooming/panning with AutoFocus and Manual Focus, 1080P solid so far)

My film mode settings are: Smooth settings, -2 Contrast, -1 Sharp, -2 Noise Reduction, OIS always on. I have informally tested these settings by performing my daffodils of death test and, more importantly, using my camera on field trips.

I'm going to try and squeeze some more mbps out of my card; will report back soon! And, last but not least, thank you Vitaliy and other testers!
 
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Anyone have New, Stable 720p 30 MJPEG settings
the kind that are beautiful like "PappasArts settings", and "Paul Shields Settings"
that can run all day long on a Scandisk Extreme class 10.
On Pauls I got about 3Gigs in and had Write failure and on PappasArts I went alittle longer
but fail as well. Just as a note I also notice when I change from my 75mm to 22mm
I also get write error wt Avchd (C) settings. In same light, same scene, same Stops (I'm guessing 22mm
wider picture more info)
 
Sizzlepost said:
Anyone have New, Stable 720p 30 MJPEG settings
Click to expand...

Please try these "2xQ/T5" settings with a Class 10 card and let me know how it works.

Q: 256, 220, 200, 184
T: 5, 5, 5, 5

I have 4:2:2 checked and get around 70 mbps.
Camera records fine. AFC, live histogram, 1/125 or 1/30 shutter speed are no problem.
(I use the 20 mm pancake lens)
 
Sizzlepost said:
Anyone have New, Stable 720p 30 MJPEG settings
the kind that are beautiful like "PappasArts settings", and "Paul Shields Settings"
that can run all day long on a Scandisk Extreme class 10.
On Pauls I got about 3Gigs in and had Write failure and on PappasArts I went alittle longer
but fail as well. Just as a note I also notice when I change from my 75mm to 22mm
I also get write error wt Avchd (C) settings. In same light, same scene, same Stops (I'm guessing 22mm
wider picture more info)
Click to expand...

What card are you using? If you want to go with the higher bitrates like the 70Mbps + range you'll need either the 32gig Scandisk Extreme Class 10 card or the Panasonic 32gig Gold Class 10 card. I myself have the Patriot 32gig Class 10 card and it seems to fail around 53-54Mbps. I spent a good chunk of the day today trying to find stable setting around that range. I'm very close with the AVCHD modes, but not so much with the MJPEG mode.

You can see my progress along with others here.
https://spreadsheets.google.com/lv?key=0AhUcRFsldRWndENGeHd1QUlra3c5SDhVZ0JuTTAtM3c&f=0
 
Thank you Martin, Brian,

I just got back in town from a shoot, Martin I'll try those MPEG setting, I got my camera back
around 45mbps and shot some Commercial stuff (in controlled light conditions)
and no freeze/write problems.

Brian, I am using 16gig Scandisk extreme II class 10... I'll pick up some 32's ASAP...
also thank for the chart link a can relate to I've been keeping my note pad.

Thanks guys !
Dane
drppost
sizzlepost
 
What are the best C values for?

Video Bitrate Adjustment H
Video Bitrate Adjustment L

?
 
The best settings would be the same as what you put in video bitrate - but that would be silly. It's entirely up to you. There are there so you can enter lower values and get more time at the expense of quality. I like the "C" settings, so I put the video bitrate settings from "A" and "B" in them. Not sure I'll ever actually use them, though.

One thing comes to mind. Sometimes the "C" video bitrate works fine in FHD mode bit is too much for SH mode (which actually produces more data). Putting a somewhat lower number in H might make 720p usable. The video bitrate setting is a combined setting for FHD and SH modes. If you use the highest value that still works in FHD mode chances are SH mode will produce write errors. Using H mode might be a good way to get around this.

Chris
 
Thanks Chris.

So any are the numbers for H & L for C settings, for FHD only, and for FHD and SH?
And is it better to leave them unchecked?

I don't get this fields...
 
The video bitrate setting is for FHD and SH - it applies to both. The H video setting is just for H and L just for L. I'm guessing (although I haven't tested this) that if you put the same settings in all three the H and L modes will become the same as the SH mode.

The "C" settings are utterly reliable for me in FHD mode but fail in SH mode. I'm going to try putting just a slightly lower number in H and see if I can stabilize 720p mode. That way I can have my cake and eat it too as long as I ignore the SH option.

Chris
 
I am trying to find out how high can I push te bitrates using the cards I have for my GH1, Transcend 8GB Class 6. I tried cbranding a jobless idea of using H and L setting to have other 720 60p alternatives in case SH failed.

I tried with this settings
VBA FHD/SH 40000000
VBA H 36000000
VBA L 16000000
OVA 50000000
LBA 60000000

No native 24p enabled.

My idea was to push FHD/SH as far as some people had reported would work on Class 6 Cards. 40/50/60. Since 720 60p has been reported to fail at settings that FHD held up well the L and H settings would allow me to try to make 720p when SH failed.

Took my GH1 to a place full of grass, leaves and trees and did several tests.

FHD was pretty robust, almost mud free and wouldn't fail recording under any circumstances.

SH failed when I moved around quickly or if I tried to zoom.

H held up better moving around and zooming but also failed sometimes.

L held up well all the time.
 
My theory about using the H and L settings to stabilize 720p didn't work out. It seems that the Limiting Bitrate plays a dominant role for stability. I can use the "C" settings reliably for AVCHD 1080 mode, but write failures occur in 720 mode. Even if I set "H" to a very low value (20), I can still get failures. This actually does make sense because the Limiting Bitrate is still high (60). I suspect the H and L (and SH, for that matter) settings will be of limited utility unless the Limiting Bitrate can be lowered without affecting 1080 mode.

Is there a way that Limiting Bitrate can be set separately for each AVCHD mode? Or, alternatively, can there be one setting for 1080 mode and another for all 720 modes?

Chris
 
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I was able to stabilize 720p using your theory.
This were the settings I used: FHD/SD bitrate: 40, H bitrate: 22, L bitrate: 18, overall: 44, limiting: 50.
Wasn't able to make the card fail using the camera in FHD and in L. It did fail in H, that has that low 22 mpbs bitrate. I even tried 20 mbps and it would fail if I zoomed in and out like crazy (shooting trees and grass).
I wil use H as my "normal" 720p mode as it rarely fails. L will be kept as a 100% robust setting in case H fails.
 
Actually, you got close to what I found. If you reduce the limiting bitrate from 60 to 50 and the video from 50 to 40 the 720p works (at least for me). Having to reduce the video bitrate from 50 to 22 is a lot bigger change. I was hoping a small change would suffice, as it does when you also reduce the limiting bitrate.

Chris
 
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