video_editing:dv_camera_footage

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video_editing:dv_camera_footage [2020/06/07 11:09] davidvideo_editing:dv_camera_footage [2021/06/27 08:56] (current) david
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 +====== The DV Video Battle ======
 +
 I had an old camera, a ''Samsung DigitalCam VP-D372WH PAL'' which takes DV tapes. I decided to get it out and see what it had on the tapes, and if there was anything I could do with it. What a mission! I had an old camera, a ''Samsung DigitalCam VP-D372WH PAL'' which takes DV tapes. I decided to get it out and see what it had on the tapes, and if there was anything I could do with it. What a mission!
  
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 ====== The old Laptop ====== ====== The old Laptop ======
  
-I dug an old laptop out of the garage (not used since 2014, it was old then). Which had a Firewire socket on it. I tried a copy of [[https://www.debian.org/|Debian]], without luck. I tried a copy of [[https://ubuntu.com/|Ubuntu]] without lick, I found a copy of Windows XP and installed that, still wouldn't recognize the camera properly and download video. +{{ :video_editing:img_20200529_085605.jpg?200|}} 
 + 
 +I dug an old laptop out of the garage (not used since 2014, it was old then). Which had a Firewire socket on it. The fact that the keyboard didn't work very well (due to the Lucozade incident of 2011) was easily overcome by using a USB keyboard. 
 + 
 +I tried a copy of [[https://www.debian.org/|Debian]], without luck. I tried a copy of [[https://ubuntu.com/|Ubuntu]] without lick, I found a copy of Windows XP and installed that, still wouldn't recognize the camera properly and download video. 
  
 Clearly there was an issue with the laptop, and I wasn't going to get anywhere with it. Back into storage for now. Clearly there was an issue with the laptop, and I wasn't going to get anywhere with it. Back into storage for now.
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 ====== The old Desktop ====== ====== The old Desktop ======
  
-I got an old PC out of the garage (last used in 2015, somewhat newer than the laptop). Found that it too had a graphics card and a network card using its slots... Oh well, I can use the onboard graphics, I'm not editing videos on it and I'm not playing games.+{{ :video_editing:img_20200604_190737.jpg?400|}} 
 + 
 +I got an old PC out of the garage (last used in 2016, somewhat newer than the laptop). Found that it too had a graphics card and a network card using its slots... Oh well, I can use the onboard graphics, I'm not editing videos on it and I'm not playing games.
  
 The machine was a bit dirty and dusty, when I tried to start it up it beeped at me repeatedly, and did nothing else (blank screen, no POST or BIOS screens). After checking the manual, it said this beeping pattern was a power issue, I fortunately cleaned around the PSU, connections and fans. When I plugged it back in, it all seemed to work happily! Result. The machine was a bit dirty and dusty, when I tried to start it up it beeped at me repeatedly, and did nothing else (blank screen, no POST or BIOS screens). After checking the manual, it said this beeping pattern was a power issue, I fortunately cleaned around the PSU, connections and fans. When I plugged it back in, it all seemed to work happily! Result.
 +
 +{{ :video_editing:img_20200606_120759.jpg?400 |}}
  
 The next issue was that the copy of Linux on it (Ubuntu 2016) didn't boot. I'd cannibalized the machine when I got a new one (disks and a few bits) and I presume the hardware configuration wasn't sufficiently consistent (I'd just taken out the graphics card to use the socket for my firewire card). I wasn't precious about the old OS, and I'd had a separate /home partition on the disk (the smartest move you can make if you are tempted to change linux distributions). It's much quicker to install a new OS than it is to try and work out why the old one doesn't want to behave. The next issue was that the copy of Linux on it (Ubuntu 2016) didn't boot. I'd cannibalized the machine when I got a new one (disks and a few bits) and I presume the hardware configuration wasn't sufficiently consistent (I'd just taken out the graphics card to use the socket for my firewire card). I wasn't precious about the old OS, and I'd had a separate /home partition on the disk (the smartest move you can make if you are tempted to change linux distributions). It's much quicker to install a new OS than it is to try and work out why the old one doesn't want to behave.
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 dvgrab -rewind -showstatus -autosplit -timestamp -timecode TapeName- dvgrab -rewind -showstatus -autosplit -timestamp -timecode TapeName-
 </code> </code>
 +
 +{{ :video_editing:img_20200606_121829.jpg?400 |}}
  
 ====== Filenames ====== ====== Filenames ======
  
 ''dvgrab'' created long filenames, containing dates and times extracted from the footage (helpful when I'd set the calendar before recording, less helpful when everything had defaulted to Jan 1st 2007. ''dvgrab'' created long filenames, containing dates and times extracted from the footage (helpful when I'd set the calendar before recording, less helpful when everything had defaulted to Jan 1st 2007.
 +
 +<code>
 +dv_tape_2-2007.08.09_12-33-13--00:05:22:21.dv
 +dv_tape_2-2007.08.09_12-41-22--00:06:15:12.dv
 +</code>
 +
 +Or more often:
 +<code>
 +dv_tape_2-2007.01.01_00-00-00--00:05:22:21.dv
 +dv_tape_2-2007.01.01_00-00-00--00:06:15:12.dv
 +</code>
  
 I'd copied the files to an external hard disk and then tried to copy them onto the windows machine I use for editing... Ok, so I have to rename them first... All of them (one for each clip recorded). I'd copied the files to an external hard disk and then tried to copy them onto the windows machine I use for editing... Ok, so I have to rename them first... All of them (one for each clip recorded).
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 # Rename with sequence numbers # Rename with sequence numbers
-prefix="BarCamp" && i=0 && for f_name in `ls -tr *.dv`; do echo "f_name: ${f_name}"; i=$((i+1)) ; i_str=`printf "%04d\n" $i`; n_f_name="${prefix}_${i_str}.dv"; echo "n_f_name: ${n_f_name}"; mv "${f_name}" "${n_f_name}"; done+prefix="BBQ" && i=0 && for f_name in `ls -tr *.dv`; do echo "f_name: ${f_name}"; i=$((i+1)) ; i_str=`printf "%04d\n" $i`; n_f_name="${prefix}_${i_str}.dv"; echo "n_f_name: ${n_f_name}"; mv "${f_name}" "${n_f_name}"; done 
 +</code> 
 + 
 +So, now I had file names like: 
 +<code> 
 +BBQ_0001.dv 
 +BBQ_0002.dv
 </code> </code>
  
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 > DV uses non-square pixels, and these are adjusted by your player on playback. NTSC DVD also uses 720 x 480. Just to add to the fun, 16:9 (widescreen) images are also 720 x 480 (NTSC) or 720 x 576 (PAL). > DV uses non-square pixels, and these are adjusted by your player on playback. NTSC DVD also uses 720 x 480. Just to add to the fun, 16:9 (widescreen) images are also 720 x 480 (NTSC) or 720 x 576 (PAL).
  
-There is some conversation on that herewhich I learned from: +This had to be handled with numerous configuration changes, and experimenting with modes.  
-  * [[https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=104371&p=578183|Blackmagic Forum - PAL 720x576 16:9 wrong aspect ratio]] + 
-  * [[https://forum.videohelp.com/threads/312656-Can-someone-EXPLAIN-the-whole-720x480-thing-to-me|Can someone EXPLAIN the whole "720x480" thing to me? - VideoHelp Forum]] - This has an amazing explanation of pixel sizes and scaling. Not to mention the maths behind it+====== Editing ======
-  * [[https://lauren.vortex.com/2018/07/27/explaining-youtubes-very-cool-new-aspect-ratio-changes|Explaining YouTube’s VERY Cool New Aspect Ratio Changes]] +
-  * [[https://forum.blackmagicdesign.com/viewtopic.php?f=32&t=77744|Blackmagic Forum - Best practice importing AVI file captured from MiniDV Tapes?]] +
-  * [[http://www.digitalfaq.com/forum/video-capture/10137-best-practice-video.html|10137 best practice video - digitalfaq.com forum]]+
  
  
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   * Stabilization as it was filmed handheld, in some cases I did manual zoom control so as to avoid the crop from taking peoples heads off.   * Stabilization as it was filmed handheld, in some cases I did manual zoom control so as to avoid the crop from taking peoples heads off.
   * I tried outputting in a similar dimensions and PAL format, but this didn't transfer to other mediums, in the end I found I had a more satisfactory result converting the timeline to 720p   * I tried outputting in a similar dimensions and PAL format, but this didn't transfer to other mediums, in the end I found I had a more satisfactory result converting the timeline to 720p
 +
 +====== Notes ======
 +
 +
 +I learned from:
 +  * [[https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=104371&p=578183|Blackmagic Forum - PAL 720x576 16:9 wrong aspect ratio]]
 +  * [[https://forum.videohelp.com/threads/312656-Can-someone-EXPLAIN-the-whole-720x480-thing-to-me|Can someone EXPLAIN the whole "720x480" thing to me? - VideoHelp Forum]] - This has an amazing explanation of pixel sizes and scaling. Not to mention the maths behind it.
 +  * [[https://lauren.vortex.com/2018/07/27/explaining-youtubes-very-cool-new-aspect-ratio-changes|Explaining YouTube’s VERY Cool New Aspect Ratio Changes]]
 +  * [[https://forum.blackmagicdesign.com/viewtopic.php?f=32&t=77744|Blackmagic Forum - Best practice importing AVI file captured from MiniDV Tapes?]]
 +  * [[http://www.digitalfaq.com/forum/video-capture/10137-best-practice-video.html|10137 best practice video - digitalfaq.com forum]]
 +
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