Possibilities to open a mpeg1 file?

Koepi · 2nd October 2002, 12:37

Hi,

I'm re-encoding several mpeg1 files of series *whistle* for backup purposes, for space-saving and a little "quality improvement".

But mpeg1 with avisynth is a real pain. Using Nic's mpegdecoder is fine, but unfortunately it's not usable for 2pass mdoes as no matter what I do (reload avs before 2nd pass, close vdub, reload,... reboot, reload,..) all the time the frames are different between first and second pass.
DirectShowSource is not seakable so I can't tweak the filters as I need to.
mpeg2dec.dll does what the name says, only mpeg2

Do you know of other possibilities to load an mpeg1 stream into avisynth?

Thanks for your help,
best reards,
Koepi

ompg · 2nd October 2002, 12:43

You could use the VFAPI plugin "m2v.vfp" via LoadVfapiPlugin() function + Flipvertical()

here the link : http://e3lt11.ocv.ne.jp/mpeg2/

The home page and the readme.txt are in Japanese.

It's OK for Mpeg2, never tried for Mpeg1 but this plugin support it.

Koepi · 2nd October 2002, 12:49

Thanks for the info.

vfapi works in RGB and thus introduces 2 color space conversions, that's a bad thing[tm]. I guess I've to live with DirectShowSource for so long :-/

Thanks for your tip though!

Best regards,
Koepi

hakko504 · 2nd October 2002, 13:16

Another possibility is to use VD's frameserver as VD can open MPEG1 and AVIsource acceps .vdr files if I recall correctly. This of course also have the disadvantage of double color space conversions

Nic · 2nd October 2002, 13:23

Koepi ill fix that for MPEGDecoder

...(I keep breaking that

)
I was trying to fix the rff problem....grrr & double grrr that was.

-Nic

Didée · 2nd October 2002, 14:16

to avoid the color conversion for now, you could fast recompress to Huffyuv and ...

[Didée running away very quickly]

ompg · 3rd October 2002, 11:52

Perhaps Mpeg mediator could help you

http://www.mpeg-mediator.com/

it supports MPEG-1 and MPEG-2 streams.
I didnt't try it and i don't know if you can use it with Avisynth like you want.

But Internal processing is YUV and i read somewhere that It works in conjunction with an AviSynth script.

If you want i could try to find the tutorial

Ompg

2nd October 2002, 12:37	#1 \| Link
Koepi Moderator Join Date: Oct 2001 Location: Germany Posts: 4,454	Possibilities to open a mpeg1 file? Hi, I'm re-encoding several mpeg1 files of series whistle for backup purposes, for space-saving and a little "quality improvement". But mpeg1 with avisynth is a real pain. Using Nic's mpegdecoder is fine, but unfortunately it's not usable for 2pass mdoes as no matter what I do (reload avs before 2nd pass, close vdub, reload,... reboot, reload,..) all the time the frames are different between first and second pass. DirectShowSource is not seakable so I can't tweak the filters as I need to. mpeg2dec.dll does what the name says, only mpeg2 Do you know of other possibilities to load an mpeg1 stream into avisynth? Thanks for your help, best reards, Koepi __________________ Koepi's new media development site

2nd October 2002, 12:49	#3 \| Link
Koepi Moderator Join Date: Oct 2001 Location: Germany Posts: 4,454	Thanks for the info. vfapi works in RGB and thus introduces 2 color space conversions, that's a bad thing[tm]. I guess I've to live with DirectShowSource for so long :-/ Thanks for your tip though! Best regards, Koepi __________________ Koepi's new media development site

2nd October 2002, 13:16	#4 \| Link
hakko504 Remember Rule One Join Date: Oct 2001 Location: SWEDEN Posts: 1,611	Another possibility is to use VD's frameserver as VD can open MPEG1 and AVIsource acceps .vdr files if I recall correctly. This of course also have the disadvantage of double color space conversions __________________ /hakko http://www.boardgamegeek.com Last edited by hakko504; 2nd October 2002 at 13:19.

2nd October 2002, 14:16	#6 \| Link
Didée Registered User Join Date: Apr 2002 Location: Germany Posts: 5,407	to avoid the color conversion for now, you could fast recompress to Huffyuv and ... [Didée running away very quickly] __________________ - We´re at the beginning of the end of mankind´s childhood - My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)

2nd October 2002, 12:43	#2 \| Link
ompg Registered User Join Date: Sep 2002 Posts: 16	You could use the VFAPI plugin "m2v.vfp" via LoadVfapiPlugin() function + Flipvertical() here the link : http://e3lt11.ocv.ne.jp/mpeg2/ The home page and the readme.txt are in Japanese. It's OK for Mpeg2, never tried for Mpeg1 but this plugin support it.

2nd October 2002, 13:23	#5 \| Link
Nic Moderator Join Date: Oct 2001 Location: England Posts: 3,285	Koepi ill fix that for MPEGDecoder ...(I keep breaking that ) I was trying to fix the rff problem....grrr & double grrr that was. -Nic

3rd October 2002, 11:52	#7 \| Link
ompg Registered User Join Date: Sep 2002 Posts: 16	Perhaps Mpeg mediator could help you http://www.mpeg-mediator.com/ it supports MPEG-1 and MPEG-2 streams. I didnt't try it and i don't know if you can use it with Avisynth like you want. But Internal processing is YUV and i read somewhere that It works in conjunction with an AviSynth script. If you want i could try to find the tutorial Ompg