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INDI Library v1.8.5 Released (19 Apr 2020)

April 2020 release of INDI Library v1.8.5 introduces new drivers while providing fixes and improvements to existing devices and core framework.

Cannot play back SER videos?

1 year 9 months ago 1 year 9 months ago by kbrown.
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Cannot play back SER videos? #29182
Hi. I've just captured a load of SER video files with Ekos using my QHY5L-II mono camera. Everything seemed to go okay and the live video stream showed up correctly.

I'm now trying to play back the captured files and none of the programs I tried are displaying them correctly. The attached screenshot shows what they typically look like. What could be the problem?

I tried SER Player, Registax, Autostakkert and WinJupos all showing the same problem.
Attachments:

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1 year 9 months ago 1 year 9 months ago by DerPit.
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Cannot play back SER videos? #29189
Are those 8bit or 16bit? I'm (also) not able to record valid SER files in 16bit in EKOS with my ASI cameras.

Edit: Forgot the 'in 16bit' - 8bit works.

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini

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1 year 9 months ago
knro
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Cannot play back SER videos? #29198
Can you post a link to the SER file itself?

Jasem Mutlaq
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1 year 8 months ago
kbrown
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Cannot play back SER videos? #29243
My videos are 8-bit. I've managed to narrow the problem down to the fact that I used cropping (Left: 320, Top: 240, Width: 640, Height: 480) while capturing the videos. Full frame videos seem to play back just fine. I've uploaded an example of these here:

www.dropbox.com/sh/uqnoj2gyhths6k7/AAByT...YwsyTcjuHoFibqa?dl=0

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1 year 8 months ago
DerPit
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Cannot play back SER videos? #29252
I cannot comment on the error in the SER file, but just had a try with my own setup (EKOS/KStars 2.9.8, INDI 1.7.4, ASI1600MM Pro).
I can record full frame and partial frame 8bit SER movies with it. Like yours, the full frame video plays fine in ser-player (1.7.2.15).
I can load and play the partial frame video, but several of the frames are broken, showing an intensity step. I currently cannot tell if that is a shift in readout area or some exposure issue (or both) as the scope is only looking at a whitish wall... Will try to find out.

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini

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1 year 8 months ago
kbrown
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Cannot play back SER videos? #29334
Feels like the cropped area doesn't get written to the file correctly as all the various players I've tried are showing the problem same way.

Jasem: Did you have any luck with the files I linked?

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1 year 8 months ago
cgarry
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Cannot play back SER videos? #29370
I checked out your cropped and non-cropped files and they are exactly the same size (36,001KB).

The header of the cropped SER file claims that the frame size is 640 x 480, but the frame data is clearly not actually cropped and is actually the full frame data (1280 x 960). This will be why no software is able to play it.

Cheers,
Chris
The following user(s) said Thank You knro, Herrhausen, kbrown

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1 year 8 months ago
kbrown
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Cannot play back SER videos? #29390
That's helpful! Thank you! Wonder if there is a way to edit the header? I've got gigabytes of data of (cropped) mars. If I could just tell the software it's not actually cropped I might be able to revive the files...

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1 year 8 months ago 1 year 8 months ago by cgarry.
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Cannot play back SER videos? #29391
Yes, editing the header would be simple and would fix the files. You just need a hex editor. I can tell you the bytes you need to edit if you wish.
What OS are you using?
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1 year 8 months ago 1 year 8 months ago by cgarry.
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Cannot play back SER videos? #29396
To set the frame size to 1280 x 960 you need to ensure the bytes in the file are set to the following:

Address: Value
0x001A: 0x00
0x001B: 0x05
0x001C: 0x00
0x001D: 0x00
0x001E: 0xC0
0x001F: 0x03
0x0020: 0x00
0x0021: 0x00

I just tried with your broken SER file and it fixed the file.
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1 year 8 months ago
kbrown
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Cannot play back SER videos? #29399
Awesome, that works. I'll just write a simple script to apply this fix to all of my broken files.

Cheers,
Kari

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1 year 8 months ago
xsnrg
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Cannot play back SER videos? #29416
Excellent, this could be the problem that has been plaguing me for some time. I haven't had time to look into it more, but will have to try some .ser again to see.

12" pier with HDX110 using EQMod
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