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nanoDVR FAQ

SUPPORT

Please read this FAQ before posting a support request

Which Video and MPEG Formats does nanocosmos support?
How do I play back my MPEG files with an external DVD / Video CD player?
What is the difference between m1v, m2v, mpa, mpg, vob?
How is file size / compression influenced?
nanoDVR: Why does the recording stop after some seconds?
nanoDVR: Which capture cards are supported?
Why does encoding not work at all (Why get I a (black/green/scrambled) picture?)
What is the difference between those MPEG-Formate like DVD, SVCD, VCD?
Other questions - contact nanocosmos support
 
zurück  Which video and MPEG formats does nanocosmos support?

With nanocosmos MPEG Tools you may create several types of MPEG1 and MPEG2 formats, for example

VCD, SVCD, MPEG1, MPEG-2 DVD, MPEG2-MP@ML, HDTV, Transport Streams

 

zurück  How do I play back my MPEG files with an external DVD / Video CD player?
 
Video CD files created with nanocosmos encoder applications can be burned to a CD-R with a CD burning application in VideoCD-mode, e.g. WinOnCD, Nero, VOB.
The created VideoCD may be played back in "most" current DVD players.

SuperVideoCD is also supported by most CD burning applications, the MPEG Streams in SVCD mode can be imported there.
 

zurück  What is the difference between m1v, m2v, mpa, mpg, vob?
 
These file extensions are not standardized, but commonly used.

m1v means "MPEG-1 Video", i.e. a file which only contains a so called elementary video stream, without any audio.
m2v means "MPEG-2 Video"
mpa means "MPEG-Audio", an audio elementary stream.
mp2 is MPEG-Audio Layer 2, the common audio format for Video CDs
mp3 is MPEG-Audio Layer 3, which is mostly used without any video
mpg is a systems stream containing the multiplexed video and audio streams.
vob is a DVD systems stream which contains video, audio and additional information.
 

zurück  How is file size / compression influenced?
 
The main compression setting is the "bit rate" which means how many bits per second a stream is running.
You can adjust the bit rate in the encoder settings.
 
zurück  nanoDVR: Why does the recording stop after some seconds?
 
nanoDVR does not limit recording time in the demo version. nanoDVR needs cpu power and memory. To encode in realtime, it allocates some frame buffers in memory.
If the encoding speed is too slow the buffers fill too fast.
If the buffers are full, recording is interrupted.
You may adjust the following settings to increase encoding speed:
  • Increase the sliders "Encoding Speed" and "Motion Estimation" in advanced options.
  • Select a YUV color format, e.g. YUY2, I420, UYVY do NOT use RGB!
  • Choose a smaller image resolution
zurück  nanoDVR: Which capture cards are supported ?
 
nanoDVR currently uses any VideoForWindows compatible capture driver. Note that some USB devices only allow WDM capture.
Optimal results are when the driver supports Overlay Mode, and the color format is set to YUV, for example YUY2.
Do not use RGB!
nanoDVR currently does not support precompressed formats such as MJPEG and DV.
 
zurück  nanoDVR: Why do I get no sound?

Audio should work without any problems. If there is no sound, the problem is related to your hardware settings.

- Check the audio mixer settings
- For Hauppauge WinTV, there is a WinTV bug, you may try:  www.hauppauge.de/files/audiosel.exe
 
zurück  Why does encoding not work at all (Why get I a (black/green/scrambled) picture?)
 
Probably the input signal is incompatible because it is precompressed with an unsupported codec.
In MPEG SoftEngine, try changing the options "Use DirectShow" or "Use internal codecs" in Tools/Options.
 
zurück  What is the difference between those MPEG-Formats like DVD, SVCD, VCD?
 
VCD is MPEG-1 based, DVD and SVCD are MPEG-2 based.

Typ PAL NTSC Bitrate
DVD 720x576, 25 Hz 720x480, 30 Hz 2000-8000 kBit/s
SVCD 480x576, 25 Hz 480x480, 30 Hz 1000-4000 kBits/s.
VCD 352x288, 25 Hz 352x240, 30 Hz 1150 kBits/s