<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:tahoma,new york,times,serif;font-size:10pt;color:#000000;">hi,<br><br>there is a problem when i convert some mpeg files to ogv with <span style="font-weight: bold;">libthusnelda I 20090527</span>... i don't know it this helps you but i am sending information about it...<br><br>when i convert an mpeg file ro ogv, there are macro block artifacts on the lower part of the video... but it doesn't happen all the time... description is below and you can download the video files form the link below if you like... (1MB rar file with 5 video files)<br><a rel="nofollow" target="_blank" href="https://download.yousendit.com/UmNKckhWUnIwZ21Ga1E9PQ">https://download.yousendit.com/UmNKckhWUnIwZ21Ga1E9PQ</a><br><br>video files and info:<br><br>01_original_avi_captured_with_camera.avi<br>320x240 PAR1:1 progressive 16.716fps mjpg avi <br>this is the original footage
captured by the camera<br><br>02_mpeg_converted_from_original_avi.mpg<br>320x240 par1:1 progressive 25fps mpeg2 <br>this is the file i have converted to <span style="font-weight: bold;">mpeg</span> <span style="font-weight: bold;">form original file</span> with mainconcept mpeg pro.. the video is OK<br><br>03_ogv_converted_from_original_w_firefogg_OK.ogv<br>320x240 PAR1:1 16,72fps ogv<br>this is the file i have converted to <span style="font-weight: bold;">ogv</span> <span style="font-weight: bold;">from original file</span> with firefogg (ffmpeg2theora 0.24).. the video is OK<br><br>04_ogv_converted_from_mpeg_w_firefogg_wARTIFACTS.ogv<br>320x240 par1:1 25fps ogv<br>this is the file i have converted to <span style="font-weight: bold;">ogv from mpeg file</span> with above with firefogg (ffmpeg2theora 0.24).. this is the <span style="font-weight: bold;">problematic file</span>... there are macro block artifacts on the lower part of the video... this
happens sometimes when i convert from mpeg (with he same spesifications as above) to ogv. but some files are converted ok... i don't understand it... but when i convert the same mpeg file with <span style="font-weight: bold;">vlc </span>which uses <span style="font-weight: bold;">libtheora I 20081020</span> 3 2 1 <span style="font-weight: bold;">it is ok,</span> there are no artifacts (but also the 16:15 par instead of 1:1).. here is info about it..<br><br>06_vlc_converted_file_from_mpeg_NOartifactsbut rescaled.ps<br>320x256 16:15 par 25fps .ps? file..<br>this is converted form the mpeg file above by using vlc 0.99 grichenko (windows) which uses ibtheora I 20081020 3 2 1.... the extension of the file is .ps but i don't understand what it is... vlc converted ogg files always have this extension on windows, which is another problem. but it plays when i drag it into vlc or change the extension to .ogv... THIS FILE ALSO DOESN'T HAVE ANY
MACROBLOCK ARTIFACTS...<br><br> <span style="font-weight: bold;">because the same mpeg file is converted ok with vlc encoder which uses do you think that this problem is because of ffmpeg2theora or libthusnelda I 20090527 ?libtheora I 20081020 is ok...</span><br style="font-weight: bold;"><br><div> </div>.-_-.<div><br></div></div><br>
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