Lossless Recording Saves Short

tyeckc

New Member
I will record a video, go to view the recording only to find that only 30 or so seconds have been recorded even though I stopped the recording at a much longer time. This only occurs when I record in lossless, and the issue just popped up out of nowhere today, I was able to do this previously without issue. I know that the issue is not lack of PC capability or overload since I have a powerful PC and never previously had the issue.

I included the log from one of these failed recordings, any help would be greatly appreciated, thank you!
 

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koala

Active Member
According to the log, every recording session was gracefully ended after about 30-60 seconds. No issues. It looks as if you clicked the button to stop recording.
Also make sure you don't have the output timer active: Tools->Output timer.
 

tyeckc

New Member
According to the log, every recording session was gracefully ended after about 30-60 seconds. No issues. It looks as if you clicked the button to stop recording.
Also make sure you don't have the output timer active: Tools->Output timer.
I'll check to see if I have the output timer set, because even if the recording seems to end gracefully after I click the stop recording button, the actual saved file is shorter than the time I recorded. Thank you.
 

tyeckc

New Member
According to the log, every recording session was gracefully ended after about 30-60 seconds. No issues. It looks as if you clicked the button to stop recording.
Also make sure you don't have the output timer active: Tools->Output timer.
I checked and I did and do not have a timer set, also the times at which the recording saves changes so that isn't timer based. I am still having the issue. Essentially what I do is start recording in lossless, record for say a minute, click stop recording... I then go and open the recording and it is only the first 28 seconds or somewhere around there. Not sure what the issue is as again, it popped up out of nowhere and wasn't even present yesterday.
 

tyeckc

New Member
So you can better understand the issue here's a short video on what's happening, you can see I'm recording in lossless for about 2 minutes which is when I stop the recording, I then open that recording and only 48 seconds were saved:

 

BluePeer

Member
Codec ID/Info : Ut Video Lossless Codec
Codec ID/Hint : Ut Video
Duration : 59 s 983 ms
Bit rate : 310 Mb/s
Width : 1 716 pixels
Height : 720 pixels
related to your harddrive or SSD fill state it can be a write speed issue?
drives loose write speed on filling up
related to you'r report this only happen on "lossless"
have test it local and have a "similary" issue if i record with this lossless with 1440P to my harddrive it stack ups the write buffer up to 100% after ~48 seconds so the result is of a times record fo 1 Minute a file that contains 54s footage

so for me its a simple issue related to a not more matching write speed related to the fragmentation of Harddrive or fill level of ssd

edit: logfiles not shows any issues
 

tyeckc

New Member
The hard drive that I am saving the files to is an 8TB HDD, it still has 3TB or so of available storage, so this could possibly be the issue, but I don't believe so as the problem arose suddenly today without me making any changes or filling up the drive any more than it was when it worked.
 

BluePeer

Member
make a record over 2 Minute and look in this time on the taskmanager Performance tab
http://prntscr.com/wntlly <--
if this is go nonestop up and peak then you have the proof
a HDD can be massive fragmentet without change fill state its a physical spinning
 

koala

Active Member
You have a big resolution, with 60 fps, that's a huge throughput for lossless. May be your harddisk is too slow for this. Try to save to SSD just to see if it is the hard disk. In case your hd is an external hd, connected via USB - this is not suited for this kind of huge volume writing, since usually the write cache is disabled for external drives.
 

tyeckc

New Member
You have a big resolution, with 60 fps, that's a huge throughput for lossless. May be your harddisk is too slow for this. Try to save to SSD just to see if it is the hard disk. In case your hd is an external hd, connected via USB - this is not suited for this kind of huge volume writing, since usually the write cache is disabled for external drives.
It is an external connected via USB, I never had an issue recording in this way to it previously, but it could have slowed down as it got filled up, I'll record to my SSD and see if it isolates the problem. Thank you.
 

tyeckc

New Member
You have a big resolution, with 60 fps, that's a huge throughput for lossless. May be your harddisk is too slow for this. Try to save to SSD just to see if it is the hard disk. In case your hd is an external hd, connected via USB - this is not suited for this kind of huge volume writing, since usually the write cache is disabled for external drives.
Just tested this exactly, recorded direct to my internal SSD and there was no issue, thanks for your help.
 
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