Choppy framerate with Divx player

[whooray1]

I put a film onto a disc. I played the disc in my DVD/CD-writer and the film was choppy while playing it with the Divx player, and there was a weird clicking noise too in the background, but when I tried it with my VLC player and it worked fine. I tried the film again directly trough my HDD, then it had no problem at all while playing with the Divx player. It was also choppy on my DVD player.

Can it be because of the CD I used (TDK CD-RW 700MB) or because of the DVD-writer (Samsung Writemaster SH-S162A)?

[jagabo]

It's more likely that the Divx player doesn't buffer well.

[whooray1]

Is there any way to fix it? Since I usually watch films on my DVD player and it acts the same way. Do I have to convert the file or is there an easier way to do this?

[jagabo]

I was able to duplicate your problem with an old 4x CD-RW. Divx Player could not play the video smoothly. Several other players had no problems: Windows Media Player, Media Player Classic, VLC, KMPlayer. My set-top Divx/DVD players didn't have any problems either. I used a 640x480, 1500 kbps VBR divx AVI file.

Try using DVDs instead of CDs if you can.

Your problems with a set-top player might have other causes. There are some Divx and Xvid features that many set-top players don't support. Check you files for GMC, QPel, packed bitstream, b-frames. Mpeg4Modifier will show you if your files use those. KMPlayer too.

[whooray1]

The strange thing is that my DVD player doesn't want to read Data DVD's for some reason.

[jagabo]

Have you tried both ISO and UDF format DVDs?

[whooray1]

.ISO files work, but I've only tried the DVD versions, the ones that are 4.7GB.

[jagabo]

Not ISO files. ISO format and UDF format. Some players like one or the other. Some can handle both. It's something like the difference between FAT and NTFS file systems.

[Abond]

Ehrm, well, they are NOT 4.7, but rather 4.37 (don't believe what is written on the cover). ISO files can be video-DVD or data-DVD. DivX are data-DVD.

[jagabo]

And be sure not to use multisession. In whatever software you use to burn elect to "close" or "finalize" the disk.

[whooray1]

Well, I found that my DVD player plays Xvid formats without problems that are 1.0.3 versions, but versions that are 1.1.2, are choppy.

[jagabo]

As I said before, the problem is likely settings like bitrate, QPel, GMC, B-VOP, packed bitstream, etc. Have you used MPEG4Modifier to examine files that don't play properly?



Download the Divx Test CD:

http://divxtest.surdvd.com/Download-our-Test-CD.html

It has sample clips with all the MPEG4 features that are likely to cause problems with many players.

[whooray1]

This is the film, that uses the older Xvid format and works well on my DVD player:

Packed bitstream: No
QPel: No
GMC: No
Interlaced: No
Aspect ratio: Square pixels
Quant type: H.263
FourCC: DX50
User data: XviD0037

I-VOPs: 1985 (1,42%)
P-VOPs: 53408 (38,29%)
B-VOPs: 84099 (60,29%)
S-VOPs: 0 (0,00%)
N-VOPs: 0 (0,00%)

Max consecutive B-VOPs: 2
1 consec: 31,07%
2 consec: 68,93%


And this is the film that is choppy:

Packed bitstream: Yes
QPel: No
GMC: No
Interlaced: No
Aspect ratio: Square pixels
Quant type: H.263
FourCC: XVID
User data: DivX503b1393p
XviD0046

I-VOPs: 1460 (1,26%)
P-VOPs: 41773 (35,95%)
B-VOPs: 72964 (62,79%)
S-VOPs: 0 (0,00%)
N-VOPs: 4 (0,00%)

Max consecutive B-VOPs: 2
1 consec: 19,74%
2 consec: 80,26%

Is the film choppy because it has packed bitstream?

[jagabo]

Is the film choppy because it has packed bitstream?

Probably, that's a very common problem. You can use MPEG4Modifier to unpack the bitstream. This only takes a minute because the video and audio aren't reencoded.

Somer other possibilities are too high a bitrate in the Xvid file and "bad" multiplexing of the audio and video.

[whooray1]

I unpacked the bitstream and it helped. It doesn't get choppy anymore, well a little, but that's barely noticable. Thanks for the help.

[solution81]

can anyone give me an efficiant description of a set top player?

[jagabo]

can anyone give me an efficiant description of a set top player?

What do you mean? Do you want a list of DVD players that will support Divx? You can use the DVD Players guide at the left and select the Divx/Xvid option. Some of the better Divx/DVD players right now are the Philips DVP 5960 and 5982, and the Oppos.