Originally Posted by amesdp
You can easily transfer recordings from the 3575 to your computer and read them or edit them using almost any software that reads menu titles or VOB files from a DVD. The 3575 records on DVDs in standard DVD+VR format - see http://www.ulead.com/learning/general/video_04_1.htm
for a good explanation of this format. This the same DVD+VR format used by most other DVD+R/RW recorders and by PC programs such as NeroVision Express that can produce or edit VR format. With DVD+VR format, the recorder places additional temporary recording information in a special folder on the disc named Video_RM, separate from the usual Video_TS folder that contains the standard video files and menus. When recording to a rewritable disc, the recorder updates the Video_TS folder each time so that the disc is always playable in a normal DVD player, but that can only be done once on a write-once disc, when you Finalize it. Until you Finalize a write-once disc, there is no standard disc index, and the disc cannot be played in normal DVD players or computer DVD drives. You can see the unfinalized disc structure and read it in a computer drive with a special program like ISOBuster that reads UDF format.
The recorder does not record a separate VOB file per recording. Instead it appends new recordings to the same VOB file until the file reaches a 1 Gbyte size, then it starts a new file. The recorder will mix recordings at different resolutions in the same VOB file. The start point and resolution of each recording is correctly indexed in the IFO files, so DVD players and DVD editing programs have no problem, but it tends to confuse programs looking directly at the VOB files without going through the IFO index - they may freeze or crash at the point the video changes resolution in the VOB file.
If you are exporting DVD video to an avi file, the aspect ratio may need adjusting. For example, when the DVR records at 720 x 480 resolution, this is not a 4:3 aspect ratio, and the individual pixels do not have a 1:1 aspect ratio. The IFO file contains a 4:3 aspect ratio flag which tells the player to display it at that aspect ratio, but that flag is not carried through to other video formats. You may have to resample the input to the correct 4:3 aspect ratio in order to prevent the image from appearing stretched too wide. If your recording is actually 16:9 aspect ratio, and you want to keep it in DVD format, you may want to use the PC utility program IFOEdit to set the aspect ratio correctly in the IFO file for the title.
Some PC software comments:
NeroVision Express can import DVD+VR discs from the 3575 and edit them directly. The resulting disc can be Adapted back to the 3575 format without losing any content.
Nero Recode can read the DVD+VR index structure and the recorded video titles or VOB files produced by the 3575.
DVD Decrypter can be used to copy the recorded DVD to the hard drive. Although no decryption necessary, it usually reports fixing some minor errors in the DVD structure. Unknown whether these are genuine errors or a minor incompatibility with the DVD+VR format, but the process of copying with DVD Decrypter does sometimes make the video titles visible to other software which has trouble seeing them otherwise.
TMPGEnc DVD Author can read the DVD+VR index structure and the recorded video titles or VOB files directly from the disc recorded by the 3575, but it sees two copies of every title, as it seems to be reading both file structures independently. I like TMPGEnc DVD Author better than NeroVision Express for editing just because it is much more stable - NVE tends to crash a lot.
DVD Shrink 3.2 seems to have no problem reading DVD+VR discs recorded by the 3575 (which is not true with some previous DVD+VR recorders I have used). It may get a little confused when there is more than one title on the disc. You can do some limited re-authoring with DVD Shrink, but no editing within titles.
VirtualDub-MPEG2 (a variant of VirtualDub) can read the VOB files from the recorded disc, but you may have to resize the avi output to get the correct 4:3 aspect ratio. You also need an AC3 DVM codec installed on your computer to extract the audio (see http://fcchandler.home.comcast.net/stable/
for links to the free video editor VirtualDubMPEG2 and a compatible AC3 codec).
ISOBuster can read and copy the VOB files from the recorded disc, even if it is a DVD+R which has not been finalized. This tool can also repair certain types of disc errors while it is copying the file, allowing you to recover video from bad discs. (Some of this functionality requires you to pay to register the program.)