How do I get rid of this ?

[Somebla]

I lowerd the bitrate of a SVCD to lower the file size by 50 MB, but now I got this:

sometimes in the movie, mostly when their is a lot of moving.

Did that happen because i lowerd the bitrate ?
If so, is their a differnt way to lower a movie by 50 MB, like lower the sound quilty or somthing.. ?

Thanks.

[ching0]

the only time i've seen that, is when i've made a divx file, and didnt use 'force film' when running it through dvd2avi.
that happens, because the frame rate is too much more than what you're trying to make it.
so, like if your original svcd was at 29.97fps and you reencoded it at 23, it compensates by dropping like... frames 3,5,8,and10. like a 2,3 combination. i dunno if thats also true for SVCD, but if so you may just have to reencode it.

[Somebla]

I cheked the fram rate and on the orginal (before lowering the bitrate) it's 25 and after lowering still 25......

[bugster]

That looks rather like interlacing artefacts. If your source is interlaced, make sure your target encode settings are for interlaced, and vice versa.
Also, when playing it on a PC, make sure you use a player with built-in on the fly de-interlacing, like PowerDVD. The reason being is that a PC monitor is not interlaced, so diplaying interlaced material without de-interlacing can make it look like you have shown.

[Somebla]

I tried encoding one in Interlace and Non-Interlace and it's the same..
I'm using TMPGEnc, maby you could refer me to another way to lower the file size exept lowering the bitrate.

Thanks again.

[bugster]

I tried encoding one in Interlace and Non-Interlace and it's the same..
I'm using TMPGEnc, maby you could refer me to another way to lower the file size exept lowering the bitrate.

Thanks again.

There are two things that affect the size of an mpeg file. Playing time and bitrate, absolutley nothing else matters.

So, to reduce the file size you have to reduce one of these.

Movie length can be reduced by cutting out opening or end credits, with very little detriemnt to the movie. Bitrate can only be reduced by re-encoding. You could simply reduce the audio bitrate and re-encode that, you might gain 50Mb that way but it would be pusshing it.

I still think it might be interlacing. You are encoding with TmpGenc, right? On the advanced tab is a setting for top filed/bottom filed first. Try reversing that and encoding again, just a short clip will do, see if that helps.

[FT Shark]

I had this happen to me before. I used the de-interlace filter and everything was fine.

[Somebla]

bugster, thanks but it still is the same..
How can i reduce the audio bitrate ?

FT Shark, how can i use the de-interlace filter ?

Thanks again

[bugster]

You can extract the audio from the original avi, if that is your source, or use Tmpgenc mpeg tools to de-multiplex the mp2 audio from the mpeg. Once you have eithetr of these, just start Tmpgenc, cancel the wizard. The open the wav or mp2 as the audio source, no video source required. Click the radio button at the bottom right that says audio only. Now click settings and you should have just the audio tab. Select the new bitrate and click Ok. Make sure you have an output file selected and click start. It should only take a few minutes. Then use TmpGenc mpeg-tools again to multiplex the audio with your video.

[cartamy]

I just recently discovered a silly little mistake I had been making and it's possible you may be making the same mistake. I agree that this seems to be an interlacing problem. You said that the Interlace and Non-Interlace encodes looked the same, which is exactly what I was seeing with my stuff. In the version of Tmpgenc that I use, there is a "check box" for de-interlacing and I would check that on occaission. What I didn't know was that the default value was "deinterlace (none)", so I wasn't actually de-interlacing even though I had checked the box. Try double-clicking the text to the right of the "check box" and a whole bunch of de-interlacing options will appear. Select an option other than "none" like I was doing, , and I bet you'll get better results.

[FT Shark]

double click on it in tmpgenc. the list of filters are under the advance tab.

check this out: https://www.videohelp.com/tmpgencexplained.htm

[Somebla]

Thanks ALOT !!!

I had to check the box and choos one of them. Thanks !