Data
12th March 2004, 18:16
update#1: occurs in 1.05beta & 1.0 (older versions not tested)
update#2: I've added input files (3mb), with which you can recreate the problem. Can someone *please* test it too and report back in this thead? Thx in advance!
The files are on http://mitglied.lycos.de/datasoong/tng.html
Please ignore the first and last frames, as they might be damaged, due to vobSplitting) To recreate the prob. use the default settings in AutoGK and the option "target quality" (i.e. 75% or 90%, etc).
[plz. also note update #3 bellow]
Complete problem description:
I've got strange artifacts in some scenes when I use AutoGK with the DivX setting. It only happens with DivX (in my case 5.1.1 std), with XviD this doesn't accour.
Here are screenshots taken out of an encoded avi. (in this case Star Trek TNG Pilot episode converted from the RC-2 PAL DVD / scene: when the ship goes to warp at the end of the famous intro sequence).
( screens alternatively on http://mitglied.lycos.de/datasoong/tng.html )
DivX 5.1.1 encoded:
http://mitglied.lycos.de/datasoong/DivX511.jpg
XviD encoded:
http://mitglied.lycos.de/datasoong/xvid.jpg
Only one frame is affected in this scene (the other frames look fine).
I've noticed those same artifacts several times in this avi file, mostly they occur when the camera view changes (i.e. you look at person A / now they show you the perspective from person A / and in between those two [the transition] sometimes 1 frame has this strange pixelization)
When encoding the avi externally (i.e. with a default DivX certified profile) this does not happen. It must be an encoding in AutoGK that causes this.
I used the quality in % setting in AutoGK (90%, 100% - didn't make any difference) I also tried using the other matrix (not the ESS compatible one), same result. With this single-pass encoding it always seems to happen. (also tested on 2 different computers :-))
update#3: I've noticed one strange thing: When using custom size (MB) and entering a size that is larger than what the file would have normally been at 100% quality encoding, there are no artifacts! (i.e. the 100% quality file was 133megs after first encoding; one now encodes again, this time to forced 200megs -result: perfect file without pixel artifacts) [but this can hardly be the answer for this problem :D]
Btw., when using "maximum quality, unlimited size", the problem also doesn't seem to occur. But it's strange that with XviD everything works file (in any quality/size setting) and with DivX one would have to use this "maximum quality" setting [and not even a manual quality level of 75% to 100% works without this problem]
PS to dev team: AutoGK ist clearly the best program I've ever seen for direct VOB->AVI conversion. Incredable job!
update#2: I've added input files (3mb), with which you can recreate the problem. Can someone *please* test it too and report back in this thead? Thx in advance!
The files are on http://mitglied.lycos.de/datasoong/tng.html
Please ignore the first and last frames, as they might be damaged, due to vobSplitting) To recreate the prob. use the default settings in AutoGK and the option "target quality" (i.e. 75% or 90%, etc).
[plz. also note update #3 bellow]
Complete problem description:
I've got strange artifacts in some scenes when I use AutoGK with the DivX setting. It only happens with DivX (in my case 5.1.1 std), with XviD this doesn't accour.
Here are screenshots taken out of an encoded avi. (in this case Star Trek TNG Pilot episode converted from the RC-2 PAL DVD / scene: when the ship goes to warp at the end of the famous intro sequence).
( screens alternatively on http://mitglied.lycos.de/datasoong/tng.html )
DivX 5.1.1 encoded:
http://mitglied.lycos.de/datasoong/DivX511.jpg
XviD encoded:
http://mitglied.lycos.de/datasoong/xvid.jpg
Only one frame is affected in this scene (the other frames look fine).
I've noticed those same artifacts several times in this avi file, mostly they occur when the camera view changes (i.e. you look at person A / now they show you the perspective from person A / and in between those two [the transition] sometimes 1 frame has this strange pixelization)
When encoding the avi externally (i.e. with a default DivX certified profile) this does not happen. It must be an encoding in AutoGK that causes this.
I used the quality in % setting in AutoGK (90%, 100% - didn't make any difference) I also tried using the other matrix (not the ESS compatible one), same result. With this single-pass encoding it always seems to happen. (also tested on 2 different computers :-))
update#3: I've noticed one strange thing: When using custom size (MB) and entering a size that is larger than what the file would have normally been at 100% quality encoding, there are no artifacts! (i.e. the 100% quality file was 133megs after first encoding; one now encodes again, this time to forced 200megs -result: perfect file without pixel artifacts) [but this can hardly be the answer for this problem :D]
Btw., when using "maximum quality, unlimited size", the problem also doesn't seem to occur. But it's strange that with XviD everything works file (in any quality/size setting) and with DivX one would have to use this "maximum quality" setting [and not even a manual quality level of 75% to 100% works without this problem]
PS to dev team: AutoGK ist clearly the best program I've ever seen for direct VOB->AVI conversion. Incredable job!