I had to post the obligatory 'point of interest' video with music and flash video hosted on youtube. I really need about 5-6 more secondary batteries and more day time. So far linux has been the most important tool for my work with the DJI 4. I have been using arm-based computers to work with the micro sd cards and ubuntu with ffmpeg to mix the video and audio. I use transmageddon to convert MOV to flv. (flash video)
I'd like to say a lot more but I am much too new to really say anything of import. I do know that I corrupted the FAT32 filesystem on a 32GB card recently and had to save it under linux. I was using a mv(1) operation and from now on I will use a cp(1) operation instead.
2016-06-12
I had a filesystem error when trying to copy some video off the micro sd card to an ssd in one of the Cubie board servers here. When trying to get a directory listing of the micro sd card it also appeared to be empty after the initial error. I thought I had lost everything!
My card was on sdd.
# beginning of example
root@master:/master/tmp/point_of_interest# dosfsck -w -r -l -a -v -t /dev/sdd1
dosfsck 3.0.13 (30 Jun 2012)
dosfsck 3.0.13, 30 Jun 2012, FAT32, LFN
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
1124 reserved sectors
First FAT starts at byte 575488 (sector 1124)
2 FATs, 32 bit entries
3906560 bytes per FAT (= 7630 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 8388608 (sector 16384)
976512 data clusters (31998345216 bytes)
63 sectors/track, 255 heads
8192 hidden sectors
62513152 sectors total
Checking file /
Checking file /DCIM
Checking file /MISC
Checking file /DCIM/.
Checking file /DCIM/..
Checking file /DCIM/100MEDIA
Checking file /DCIM/100MEDIA/.
Checking file /DCIM/100MEDIA/..
Checking file /DCIM/100MEDIA/DJI_0001.MOV
Checking file /DCIM/100MEDIA/DJI_0002.MOV
Checking file /DCIM/100MEDIA/DJI_0003.JPG
Checking file /MISC/.
Checking file /MISC/..
Checking file /MISC/IDX
Checking file /MISC/THM
Checking file /MISC/LOG
Checking file /MISC/XCODE
Checking file /MISC/wifi.conf (WIFI~1.CON)
Checking file /MISC/IDX/.
Checking file /MISC/IDX/..
Checking file /MISC/IDX/idx00 (IDX00)
Checking file /MISC/IDX/idx01 (IDX01)
/MISC/IDX/idx00
File size is 267275 bytes, cluster chain length is > 294912 bytes.
Truncating file to 267275 bytes.
/MISC/IDX/idx01
File size is 267195 bytes, cluster chain length is > 294912 bytes.
Truncating file to 267195 bytes.
Checking file /MISC/THM/.
Checking file /MISC/THM/..
Checking file /MISC/THM/100
Checking file /MISC/THM/100/.
Checking file /MISC/THM/100/..
Checking file /MISC/THM/100/DJI_0001.THM
Checking file /MISC/THM/100/DJI_0002.THM
Checking file /MISC/LOG/.
Checking file /MISC/LOG/..
Checking file /MISC/XCODE/.
Checking file /MISC/XCODE/..
Checking for bad clusters.
Reclaiming unconnected clusters.
Checking free cluster summary.
Free cluster summary uninitialized (should be 826106)
Auto-setting.
Performing changes.
/dev/sdd1: 16 files, 150406/976512 clusters
root@master:/master/tmp/point_of_interest#
# end of example
I'd like to say a lot more but I am much too new to really say anything of import. I do know that I corrupted the FAT32 filesystem on a 32GB card recently and had to save it under linux. I was using a mv(1) operation and from now on I will use a cp(1) operation instead.
2016-06-12
I had a filesystem error when trying to copy some video off the micro sd card to an ssd in one of the Cubie board servers here. When trying to get a directory listing of the micro sd card it also appeared to be empty after the initial error. I thought I had lost everything!
My card was on sdd.
# beginning of example
root@master:/master/tmp/point_of_interest# dosfsck -w -r -l -a -v -t /dev/sdd1
dosfsck 3.0.13 (30 Jun 2012)
dosfsck 3.0.13, 30 Jun 2012, FAT32, LFN
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
1124 reserved sectors
First FAT starts at byte 575488 (sector 1124)
2 FATs, 32 bit entries
3906560 bytes per FAT (= 7630 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 8388608 (sector 16384)
976512 data clusters (31998345216 bytes)
63 sectors/track, 255 heads
8192 hidden sectors
62513152 sectors total
Checking file /
Checking file /DCIM
Checking file /MISC
Checking file /DCIM/.
Checking file /DCIM/..
Checking file /DCIM/100MEDIA
Checking file /DCIM/100MEDIA/.
Checking file /DCIM/100MEDIA/..
Checking file /DCIM/100MEDIA/DJI_0001.MOV
Checking file /DCIM/100MEDIA/DJI_0002.MOV
Checking file /DCIM/100MEDIA/DJI_0003.JPG
Checking file /MISC/.
Checking file /MISC/..
Checking file /MISC/IDX
Checking file /MISC/THM
Checking file /MISC/LOG
Checking file /MISC/XCODE
Checking file /MISC/wifi.conf (WIFI~1.CON)
Checking file /MISC/IDX/.
Checking file /MISC/IDX/..
Checking file /MISC/IDX/idx00 (IDX00)
Checking file /MISC/IDX/idx01 (IDX01)
/MISC/IDX/idx00
File size is 267275 bytes, cluster chain length is > 294912 bytes.
Truncating file to 267275 bytes.
/MISC/IDX/idx01
File size is 267195 bytes, cluster chain length is > 294912 bytes.
Truncating file to 267195 bytes.
Checking file /MISC/THM/.
Checking file /MISC/THM/..
Checking file /MISC/THM/100
Checking file /MISC/THM/100/.
Checking file /MISC/THM/100/..
Checking file /MISC/THM/100/DJI_0001.THM
Checking file /MISC/THM/100/DJI_0002.THM
Checking file /MISC/LOG/.
Checking file /MISC/LOG/..
Checking file /MISC/XCODE/.
Checking file /MISC/XCODE/..
Checking for bad clusters.
Reclaiming unconnected clusters.
Checking free cluster summary.
Free cluster summary uninitialized (should be 826106)
Auto-setting.
Performing changes.
/dev/sdd1: 16 files, 150406/976512 clusters
root@master:/master/tmp/point_of_interest#
# end of example
