Re-encode Your Movies For Gp2x

[michu]

save space on your memory card and watch the movies in safe mode without any troubles...

when i just watched a movie on my gp2x in safe mode, most movies didnt run smooth, means alot of sound problems and frame skip.. and i'am too lazy to use a command line tool with 372940237 switches.. so i found avidemux.. great and easy-to-use tool.. here the settings i used to re-encode a dvd rip to a gp2x "conform" format:

video, xvid4:
configure: main, encoding type=Single pass - bitrate, Target bitrate: 350
configure: motion estimation, Motion search precision = 6
filters, MPlayer resize: 320*170 (for a dvd, if you re-encode a 4:3 tv rip you can use 320*240)

audio, lame:
configure: CBR, 96kbits
filters, resampling 48 to 44,1kHz

The filesize will be reduced to 200-300mb.

avidemux can be found here: http://fixounet.free.fr/avidemux/ and is aviable as win and linux version...

cheers!

 

[TelcoLou]

Thank you

 

[sam fisher]

Ummmmmm didn't we already all know that. Since the days of moviepark...?

 

[Epicenter]

I suppose a reminder never hurts ... this is a good time to mention to be sure and get the latest Koepi binary of XViD from http://www.koepi.org .. and give VirtualDub a shot! It's a very impressive program and extremely easy to use.

Be SURE to encode your videos with a 320x240 resolution. This cannot be over-emphasized and it may save you HOURS of battery life! The scaling unit in the GP2X uses an enormous quantity of power, and it must function to scale down every frame of any video that is over 320x240-- or scale it up from a smaller resolution. VirtualDub can do either with the Filters option-- use the Resize filter with the Lanczos3 algorithm for the best overall quality.

 

[nubie]

Use Auto Gordian Knot, AutoGK.me.uk..

It uses and includes the proper Xvid and VirtualDubMod, it is used directly after DVD Decrypter on a VOB.

It has mp3 encoding, it is beautiful, the front-end does everything, and does it damn well too.

It is an install and use type thing, all in one package for noobs to get going on.

I use it because it works, and works well. It looks like it even throws the subtitles out there too, I don't know if they get encoded into the video or put in a txt file, or both, I have never used that option.

 

[Arcnaleon]

I have used AutoGK with VirtualDubMod as well for video encoding but there seems to be a problem with XviD, they just dont run smoothly. So I currently using DivX codec, witch takes more space than XviD.

Weird though, PocketDivX encodes XviD perfectly and run smoothly in gp2x.

 

[Epicenter]

You probably set your bitrate much too high. Try staying <1300kbits/sec for the video stream, any more is overkill on the GP2X display anyway. PcoketDivX probably defaults to a lower framerate. Just go to the specific options of XViD when you encode to set this. Also, 2-pass encoding can improve filesize while maintaining excellent quality. It just takes longer.

 

[damantis]

My videos are all choppy unless I lower the number of b-frames. This can be done in the avidemux xvid menu.

 

[sam fisher]

Thats not choppyness thats artifactualation because the GP2x only supports 3 or something.

 

[nubie]

Thats not choppyness thats artifactualation because the GP2x only supports 3 or something.

You are going in my sig now

 

[sam fisher]

Don't mock my invented words Those 'Choppy' frames are actually aritfacts. I should really have invented artifactualisation...

 

[sam fisher]

Also I recommend the use of Vorbis instead of MP3 in the case of this thread as that program seems to allow it.

 

[z32fairlady]

These days I turned to PocketDivx, which is currently the only encoder I have which can create "gp2x compliant" movies.

Previously I was using xvid+mp3@96kbps. But after upgrading my k-lite codec installation the combination magic was gone...

 

[aapje89]

definitly virtualdub, its the best , especially batch scripting and the fact that you can make conversion profiles is nice.
That way its just drag n drop, easier than avidemux.

 

[Shikaku]

These days I turned to PocketDivx, which is currently the only encoder I have which can create "gp2x compliant" movies.

Previously I was using xvid+mp3@96kbps. But after upgrading my k-lite codec installation the combination magic was gone...

I think the latest XVID (1.10) ruined GP2X compatibility: downgrade if you can.

 

[Epicenter]

These days I turned to PocketDivx, which is currently the only encoder I have which can create "gp2x compliant" movies.

Previously I was using xvid+mp3@96kbps. But after upgrading my k-lite codec installation the combination magic was gone...

K-Lite is a terrible codec pack with numerous issues and a lot of worthless features. Give Defilerpak a shot, it's neat, clean and has everything you really need. I like to get the latest XViD binaries for encoding, but if it's true newer binaries break compatibility feel free to snag an older one from Koepi.org.

You can get defilerpak at:
http://www.hellninjacommando.com/defilerpak
.. it's goon-approved h34r:

 

[z32fairlady]

Thanks to the replies, and the link for koepi.org :lol:

Using the xvid+mp3 combination magic did made really good quality movies. But frankly speaking, PocketDivx could make movies at small size even with reasonable quality.

You know, I only have a 1G SD card, and I'm too lazy to turn the bitrate down in virtualdub

 

[OMG]

Its nto harder to turn it down In VD than it is in AviDemux or whatever it is.

 

[Arcnaleon]

I have been testing some different bitrates with gp2x.

with (AutoGK, VirtualDubMod) DivX, 2-pass, 712x416:
Bitrates 500, 1000, 1500, 2000, 2500 and 3000 all played well in gp2x.
For audio I used 2 channel CBR MP3 at 320 kbps.

Were only able to encode XviD (PocketDivX, 2-pass, 712x416) to ~1900 bitrate but played perfectly on gp2x.

Source video was a clip about 3 min long from Band of Brothers DVD. a artillery scene, so there was heavy action.

Overall the best quality was in the 3000, the change in 2500 was small but noticeable by eye. Alltought the file was around 100 mg.

Normally use 400-500 bitrate and 128 kbits VBR MP3 with XviD.

 

[bacteria]

I use DVDX, which is freeware.

Quality is very good, compression is good (Xvid).

Movies are fine, but sometimes on TV shows (like Red Dwarf) the audio goes out of sync - this is the encoding, not playback on the GP2x.