EVA1: Lost clips after glitch and clip restoration

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DVXwizz

New member
Has anyone encountered clips disappearing off a card after clip restoration? I seem to have lost some footage after a glitch today and would be keen to avoid this happening again - or to discover a way of recovering the clips. New to the EVA1 but I've had a search of this forum and elsewhere without being able to find the issue documented. Further details below:

I filmed a couple of clips in the 3840x2160 25fps 422 150Mbps before switching over to 3840x2160 25fps 422 400Mbps for the rest of the day. Some of these clips were played back in camera, so I know they definitely recorded and existed at one stage. During the shoot, whilst recording a clip, the image in the viewfinder began to scroll slowly from top to bottom (like an old VCR tape) and a further press of the record button didn't result in the record icon in the viewfinder disappearing, other buttons, including the on/off toggle, appeared non-functional, so I removed the power supply. On rebooting I was presented with the "There are clips that need restoration" screen, I clicked "Set", got a success message and carried on filming. On putting the memory card in a computer, only the 150Mbps clips and the clips filmed after the glitch were present and it appears that the post-glitch clips numbers carried on counting upwards from where they left off - i.e. there's a gap in the file names which tallies with the missing clips. Camera was running from external power supply, cards were Angelbird 128GB V90.

Thanks in advance.
 
Please contact Panasonic Service Support. In general, I find such issues as you describe occurring with either a bad card or an issue with power.

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In the future, should you ever have such a problem on any camera I suggest starting on a new card and offloading clips from the original card as soon as possible.
 
I would tend to agree with Mitch re the possibility of bad cards or cards gone bad.

I know one shooter, not on EVA but on GH5S who has a number of Anglebird cards and two of his became pretty unreliable within twelve months. Had to get them replaced and so far so good. The first indication he had was that those cards took longer do download/ingest than the others. He chased around a few other Anglebird users and from his queries the conclusion he came to was they tend to be generally pretty reliable recording BUT not once you start reviewing footage in the camera. The upshot of it was he lost a complete recording session on a conference presentation but sort of got out of jail as he has a second wide 'video' camera running in HD that saved his bacon. He then bit the bullet and bought the genuine Panasonic V90 cards and hasn't suffered any recording, playback or download speed issues in the last 12 months since he had the Anglebird problem. His Anglebirds are now his fallback cards if he runs short on the Pana V90's.

Anecdotal evidence around, where else, the web seems to indicate if you get a good card you are fine but if card is borderline you could be inviting problems. Quality control at many of the third party manufactures doesn't seem to be as stringent as it is at Sony and Panasonic. To be fair they have the pressure of vested interest in making sure their media performs optimally with their products that third party vendors don't. B&H reviews alone are pretty mixed on Angelbird. Enough to put me off from using them. I'll probably get pilloried now by many ABird card users who have never had an issue. Be interesting to see what their experiences are? I'm still a firm believer in that spending a fair amount of my $$$s on kit and then buying anything other than OEM batteries and cards is a false economy in the long run. I could be wrong but am not prepared to take the risk.

Chris Young

https://www.bhphotovideo.com/c/product/1345165-REG/angelbird_avp128sd_avpro_sd_128gb.html/reviews
 
Thanks guys. I'll reach out to Panasonic Service Support and regard the cards with suspicion for the timebeing.

Using a data recovery tool I was able to locate the missing clips on the card and offload them to a computer. Although they show up as having the correct names, approximate file sizes and metadata in MediaInfo, they only show as an audio track of white noise in Premiere so seem to be corrupted.
 
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