MJPEG will not save smoothly in AVI?

[megalith6]

hello,

i filtered some footage with MSU deflicker filter in VdubMPEG2. it looked great in the 'processed' window, but when i saved it as an AVI file, the file footage was composed of oversized pixels

does this sound familiar to anyone, please - is the file corrupting or is there something i am doing wrong or failing to do?

:(

i would be SO glad if i could only save what i see in Vdub as a file!

thanks,

ric

[neuron2]

You're not 'ric' are you?

You get blocks from using too low a bitrate for the chosen codec.

If you want to just save what you see, choose a lossless codec, such as HUFYUV.

If you need more compression, consider DivX, XviD, an AVC codec, or even just MPEG2. MJPEG is not a great codec choice for the final output.

Use enough bitrate so that the blocking goes away.

[megalith6]

hi,

neuron2 wrote:

You're not 'ric' are you?

You get blocks from using too low a bitrate for the chosen codec.

If you want to just save what you see, choose a lossless codec, such as HUFYUV.

If you need more compression, consider DivX, XviD, an AVC codec, or even just MPEG2. MJPEG is not a great codec choice for the final output.

Use enough bitrate so that the blocking goes away.


i guess i just waded out into deeper water?

seen people discussing Hufy - and this is starting to sound good

how do i find Hufyuv and/or DivX, please?

many thanks: the learning curve gets interesting . . .

ric



'it's not so much the despair - it's the hope!'
- John Cleese

[neuron2]

For your final output you probably don't want HUFYUV, because it has low compression and may not play smoothly because of the high data rate (depends on your PC). HUFYUV is good for an intermediate format. You might save as HUFYUV when you want to load the output into some other application, and you don't want to use a lossy codec for that.

For final output, you want something like DivX, Xvid, etc., that will give adequate compression and play smoothly.

[megalith6]

okay - thanks: i will go for DivX

needless to say, i was extremely impressed with the processed dv i saw in MSU / Vdub Mpeg2

like magic

ric

[megalith6]

hi,

i am downloading DivX from here:-

http://www.divxmovies.com/codec/

do i import this into Vdub Mpeg2, please?

thanks,

ric

[neuron2]

Install it as per its instructions. It will then be available in VirtualDub automatically.

[megalith6]

wow - this is getting good! / will update / thanks! / ric

[megalith6]

hi,

yes, this is a great improvement - still a little grainy, but a huge improvement!

i used Vdub mpeg2 because Vdub[1] would not load deflick MSU, the filter i prefer.

having succeeded on 1&1/2 minutes of film (how do you slow Vdub down, please?*), i then attempted to capture a slightly longer piece of film to Vdub and process it - but i have never done this before, and was back with the old black screen scenario

Vdub recognised the video capture card (Pinnacle/Firewire) but would not operate the dv camera's film to import it. In Pinnacle, a picture of a camera control panel appears, and the dv tape captures to HDD via the Firewire - Vdub appeared to be actively capturing scores of megabites of nothingness - there was no image on the Vdub capture screen, and the dv camera display remained in stand-by; nevertheless, all the figures on the right hand side of the Vdub capture screen were whirring away quite healthily

please advise?

thanks,

ric

*so that you end up with 2.5 instead of 1.5 minutes of film, for example - i 'played' with the fps rate windows (set both at 50fps) but this had zero effect on the processing/processed movie?

[megalith6]

VirtualDub is not recognising dv camera (connected by Firewire to Pinnacle PCI card. Vdub recognises Pinnacle, but not the dv camera it is hooked up to)

advice please?

ric

[megalith6]

ps. i think i need a neutral PCI Firewire card - i didn't realise the Pinnacle card would try and convert everything else into Pinnacle format files?

:-|

[zilog jones]

I don't think VirtualDub can capture from DV...

Try DVIO (http://www.carr-engineering.com/dvio.htm) or some other program for that

[MaximRecoil]

I don't think VirtualDub can capture from DV...

Try DVIO (http://www.carr-engineering.com/dvio.htm) or some other program for thatThe newest version of VirtualDub (1.6.12 experimental) can capture from DV, according to this thread (http://forums.virtualdub.org/index.php?act=ST&f=1&t=11435&):
* Capture: Capture from DV sources to type-2 DV AVI using the DirectShow DV driver is now supported.
And:
Great work phaeron! Finally I can use a single capture application for both DV and analog sources!
And:
Ahh great,

finally the performance settings are saved! (is there really a speed up )

I have to try the dv capture these days...

KornX

[megalith6]

I don't think VirtualDub can capture from DV...

Try DVIO (http://www.carr-engineering.com/dvio.htm) or some other program for that

hi Zilog,

yep, what i'm doing is capturing to Pinnacle [AVI] then processing and saving in Vdub; for some reason both Pinnacle + Vdub seem to default to nero_showtime(files), which is cool, because it works. i did try capturing directly to Vdub but it didn't work - doesn't really matter if i can go through Pinnacle, though?

thanks,

ric

[megalith6]

Hi Maxim,

apols to both you and Zilog - for some reason i am not getting auto-notification of your posts? i have the 1.6.12 but wonder what the advantage of Vdub over Pinnacle direct capture is?

The newest version of VirtualDub (1.6.12 experimental) can capture from DV, according to this thread (http://forums.virtualdub.org/index.php?act=ST&f=1&t=11435&):



yep, i swear i noticed some speed up???

still,

because i evened out the brightness in my projector with some ground glass, the pulsing 'hot spot' disappeared in raw capture, and the msu filter (at default) was able to do its job. i saved the result as an AVI file, the result was an improvement on previous saves, but i noticed a fractional 'break up' in the middle of some of the frames, almost as if the flicker was trying and failing to reassert itself? i used DivX compression. the processed footage on the screen, before saving as AVI, was quite a revelation

and gone is that awful 'hot spot' strobing i used to get (touch wood) !

bests,

ric