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The information on this page is incomplete and may not be of much use.
If you can, please help by adding to it.

Video Flags

  • Clean video: set this flag if there is nothing hardsubbed in this file. RAWs are always clean.
  • Wrong Aspect Ratio: If the file was encoded with the wrong viewing aspect ratio, check this box. One way to tell whether this is true is if what should be a circle on the screen isn't completely round, but rather elliptic.

Trivial fields

These fields can be supplied manually when adding, but not creqed. They should be automatically set by avdump and are not possible to change after verification.


How many hours, minutes and seconds the file lasts. Just check in your favourite media player. If you have a file that won't display its length correctly, try to use avdump to determine the length.


The actual pixel resolution of the video. Width x Height. It should not be confused with display (playback) resolution.

Aspect Ratio

The playback aspect ratio of the video.

Video Codec

A video codec is software that enables video compression and/or decompression for digital video. eg. h264, Divx, Xvid, wmv9 and others.

Video Bitrate

The average amount of bits per second the codec uses.


Frames per second. This should be set to 0 if the video is VFR.

Video Flags

  • Anamorphic: for an explanation of this, see here.
  • VFR: Variable Frame Rate.