How can I tell if a file needs transcoding ...

General discussion about PS3 Media Server (no support or requests)

How can I tell if a file needs transcoding ...

Postby botham5645 » Thu Mar 19, 2009 5:01 pm

How can I definitively tell when a file will play without transcoding, and when does it need it.

For example, I have a movie in 2 parts. I looked through mediainfo, and they look almost exactly alike. Playing through PS3MS, cd1 never plays and cd2 always plays without transcoding! Can someone spot a difference?

Is there a check I can make on my desktop to confirm that I can play a movie without transcoding?


File 1:
------------

General
Complete name : cd1.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 700 MiB
Duration : 1h 2mn
Overall bit rate : 1 565 Kbps
Writing application : Nandub v1.0rc2
Writing library : Nandub build 1852/release

Video
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1h 2mn
Bit rate : 1 108 Kbps
Width : 672 pixels
Height : 288 pixels
Display aspect ratio : 2.35
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.239
Stream size : 495 MiB (71%)
Writing library : XviD 1.0.3 (UTC 2004-12-20)

Audio
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : 2000
Duration : 1h 2mn
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Surround: L R, LFE
Sampling rate : 48.0 KHz
Video delay : 500ms
Stream size : 200 MiB (29%)
Alignment : Split accross interleaves
Interleave, duration : 42 ms (1.00 video frame)
Interleave, preload duration : 500 ms

File 2:
---------
General
Complete name : cd2.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 698 MiB
Duration : 1h 1mn
Overall bit rate : 1 588 Kbps
Writing application : Nandub v1.0rc2
Writing library : Nandub build 1852/release

Video
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1h 1mn
Bit rate : 1 130 Kbps
Width : 672 pixels
Height : 288 pixels
Display aspect ratio : 2.35
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.244
Stream size : 497 MiB (71%)
Writing library : XviD 1.0.3 (UTC 2004-12-20)

Audio
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : 2000
Duration : 1h 1mn
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Surround: L R, LFE
Sampling rate : 48.0 KHz
Video delay : 9ms
Stream size : 197 MiB (28%)
Alignment : Split accross interleaves
Interleave, duration : 42 ms (1.00 video frame)
Interleave, preload duration : 500 ms
botham5645
 
Posts: 2
Joined: Thu Mar 19, 2009 4:54 pm

Re: How can I tell if a file needs transcoding ...

Postby shagrath » Thu Mar 19, 2009 6:36 pm

not real differences, but it's a known fact that ps3 does not like some AVI headers (why? dunno)... running AVI mux gui usually helps
shagrath
Project Lead
 
Posts: 2667
Joined: Wed Jan 14, 2009 1:39 pm

Re: How can I tell if a file needs transcoding ...

Postby botham5645 » Sun Mar 22, 2009 12:02 am

Thanks for the tip. I have used Super or other tools for remuxing, will try avimux in the future. Was just wondering if there was a way to check on this error before I sit down to watch a movie.

Is there a possibility that some movies can be played directly on PS3 (via a usb stick/drive) but not without transcoding via PS3MS?
botham5645
 
Posts: 2
Joined: Thu Mar 19, 2009 4:54 pm


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