android
Prev Previous Post   Next Post Next
  #11  
Old 02-24-2010, 05:01 PM
sumpm1 sumpm1 is offline
Junior Member
 
Join Date: Feb 2010
Posts: 1
Default

Hey guys, it looks like this thread has been dead a while. I recently got a 2gb Fuze and have been trying to find an encoding profile that will allow me to not have to use that wonky Sandisk converting software for my videos. And since I am on Ubuntu, I can't use the Sandisk software anyways.

So I have been doing some testing, and comparing using MediaInfo to see how different files compare to known working files. At first, I was looking at the audio properties, the "Format Settings Mode" and especially the "Alignment" and "Interleave Duration" settings. Going to Windows, and using VirtualDub and its interleaving settings, I was able to reproduce all of these settings except for the audio would be "Joint Stereo" instead of "Dual Mono" in the "Format Settings Mode." And I could not get any files to work.

So I began to wonder, what if I used Virtualdub or another program to simply COPY both the audio and video streams to another file? Would that file then play in the Fuze? So I did that using Virtualdub, and again got ALL of the MediaInfo settings to match, every single one! So I figured this file has to work in the player; it DIDN'T!!!

So I looked at the filesizes of the two videos, and I will post screenshots for all of this. The copied file was 111Kb smaller than the working file. Then upon MediaInfo expection, I saw that the working file's audio track was 1ms longer than the copied one. So using VirtualDub, I extracted the audio and video only of each file. I found that the audio was IDENTICAL in size, and the video was IDENTICAL in size as well. You can also see this in the MediaInfo, the video and audio "Stream Size" are the same for both files, but the filesizes do not match!

SO... There IS some other data being stored in that file!!! There must be some metadata added to the video file by the Sansa Media Converter software!

Here is the MediaInfo for each file, and screenshots of the files and their sizes.

Code:
General
Complete name                   " : WORKING FILE
Format                          " : "AVI
Format/Info                     " : "Audio Video Interleave
File size                       " : "4.99" MiB"
Duration                        " : "50s 51ms
Overall bit rate                " : "837" Kbps"
Writing application             " : "InterVideo

Video
ID                              " : "0
Format                          " : "MPEG-4 Visual
Format profile                  " : "Simple@L0
Format settings, BVOP           " : "Yes
Format settings, QPel           " : "No
Format settings, GMC            " : ""No warppoints"
Format settings, Matrix         " : ""Format_Settings_Matrix_Default (H.263)"
Codec ID                        " : "DX50
Codec ID/Hint                   " : "DivX 5
Duration                        " : "50s 50ms
Bit rate                        " : "683" Kbps"
Width                           " : "224" pixels"
Height                          " : "176" pixels"
Display aspect ratio            " : "1.273
Frame rate                      " : "20.000" fps"
Resolution                      " : "8" bits"
Scan type                       " : "Progressive
Bits/(Pixel*Frame)              " : "0.866
Stream size                     " : "4.07" MiB" (82%)

Audio
ID                              " : "1
Format                          " : "MPEG Audio
Format version                  " : "Version 1
Format profile                  " : "Layer 3
Format_Settings_Mode            " : "Dual mono
Codec ID                        " : "55
Codec ID/Hint                   " : "MP3
Duration                        " : "50s 51ms
Bit rate mode                   " : "Constant
Bit rate                        " : "128" Kbps"
Channel(s)                      " : "2" channels"
Sampling rate                   " : "44.1" KHz"
Stream size                     " : "782" KiB" (15%)
Alignment                       " : ""Split accross interleaves"
Interleave, duration            " : "100 ms (2.00" video frames")



Code:
General
Complete name                   " : COPIED FILE
Format                          " : "AVI
Format/Info                     " : "Audio Video Interleave
File size                       " : "4.88" MiB"
Duration                        " : "50s 50ms
Overall bit rate                " : "818" Kbps"
Writing application             " : "InterVideo
Writing library                 " : "VirtualDub build 32706/release

Video
ID                              " : "0
Format                          " : "MPEG-4 Visual
Format profile                  " : "Simple@L0
Format settings, BVOP           " : "Yes
Format settings, QPel           " : "No
Format settings, GMC            " : ""No warppoints"
Format settings, Matrix         " : ""Format_Settings_Matrix_Default (H.263)"
Codec ID                        " : "DX50
Codec ID/Hint                   " : "DivX 5
Duration                        " : "50s 50ms
Bit rate                        " : "683" Kbps"
Width                           " : "224" pixels"
Height                          " : "176" pixels"
Display aspect ratio            " : "1.273
Frame rate                      " : "20.000" fps"
Resolution                      " : "8" bits"
Scan type                       " : "Progressive
Bits/(Pixel*Frame)              " : "0.866
Stream size                     " : "4.07" MiB" (83%)

Audio
ID                              " : "1
Format                          " : "MPEG Audio
Format version                  " : "Version 1
Format profile                  " : "Layer 3
Format_Settings_Mode            " : "Dual mono
Codec ID                        " : "55
Codec ID/Hint                   " : "MP3
Duration                        " : "50s 50ms
Bit rate mode                   " : "Constant
Bit rate                        " : "128" Kbps"
Channel(s)                      " : "2" channels"
Sampling rate                   " : "44.1" KHz"
Stream size                     " : "782" KiB" (16%)
Alignment                       " : ""Split accross interleaves"
Interleave, duration            " : "100 ms (2.00" video frames")
Reply With Quote

 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 07:11 AM.