Audio clicks/pops in video produced by VS 10 Trial

[sschaub]

I am evaluating the trial version of VS 10. I have a DVD with AC3 5.1 audio that I want to title. I used the VS 10 "Import from DVD" feature to import the content. The .mpg file that results from the import, when played back, has low-level clicks and pops every few seconds in the audio (not present in the original DVD). As does the titled DVD, when I create it.

I don't remember having this problem when I evaluated the VS 9 trial version a couple of years ago.

I've read other threads from folks who appear to have similar problems. Any suggestions?

Stephen

[Ron P.]

This has been noticed by some users, and it seems to be related to using a Realtek onboard sound (integrated). I done some quick searching on your Soundmax. It uses the AC-97 codec, which the Realtek also uses. This may be the cause of this clicking, scratching and/or popping.

BlackLab experienced the problem only when using Dolby audio. When he changed to LPCM the clicking stopped.

Now a quick question, How are you able to hear the audio, if it is Dolby 5.1, with a TBYB version? It is known that since Dolby is fee based, it is not included with any freebie versions, so you should not be able hear anything on your imported video.....

[sschaub]

This has been noticed by some users, and it seems to be related to using a Realtek onboard sound (integrated). I done some quick searching on your Soundmax. It uses the AC-97 codec, which the Realtek also uses. This may be the cause of this clicking, scratching and/or popping.

I don't understand - why would the sound card have any effect on the audio when the audio source is not the sound card, but a DVD file? I would hope VS 10 isn't doing ANY processing on the audio when it imports from DVD.

Now a quick question, How are you able to hear the audio, if it is Dolby 5.1, with a TBYB version? It is known that since Dolby is fee based, it is not included with any freebie versions, so you should not be able hear anything on your imported video.....

VS 9 Trial and VS 10 Trial both support Dolby audio. At least, that's my personal experience...?

[Ron P.]

Here's the thread that indicates it could be related to Realtek:

http://phpbb.ulead.com.tw/EN/viewtopic. ... 109#100109]

Other's have posted similar problems, however this was due to capturing to DV type 1, where the program preferred type-2. Since you are importing files from a DVD, then I don't think that would be related to your problem.

Have you tried copying the DVD folders to your HDD, and then inserting DVD folders?

I have a Realteck onboard sound, that also uses the AC-97 codec, however I've never experienced the pops and clicks..

[sschaub]

Have you tried copying the DVD folders to your HDD, and then inserting DVD folders?

Actually, that is exactly what I did.

Last night I tried a different approach. I used TMPGEnc to extract the audio and video streams from the .VOB files to .m2v and .ac3 files. Then, I started a new project in VS 10. I took one .m2v and dragged it to the timeline, and dragged the corresponding .ac3 file to the soundtrack portion of the timeline. I cut both clips to about 2 min. to save processing time, and exported an .mpg. The resulting clip had fine video, but the audio was horrible -- very loud, frequent clicks and pops. I listened to the .ac3 separately (actually converted it to a .wav) to verify that there were no clicks and pops in the source stream.

I really like VS 10, and am considering buying it. But the main reason I need it is to title recital videos that come in DVD format. I need to figure out how to get it to work with my source material before I am willing to spend the $$ to buy it.

[Black Lab]

Let's start over. What are your project and clip properties? Please list them here.

Are you following the Recommended Procedure? If not, what is your workflow?

[sschaub]

Let's start over. What are your project and clip properties? Please list them here.

Are you following the Recommended Procedure? If not, what is your workflow?

OK -- from the beginning, here is what I do:

1. Create a new VS 10 project.
2. On the Capture tab, select Import from DVD/DVD-VR
3. Click Import DVD Folder
4. Select VIDEO_TS folder with .VOB files copied from DVD
5. Select all chapters, finish import

Now, VS 10 has created an .mpg file from the .VOB files. At this point, when I go play the .mpg file, it has clicks and pops in the audio. So, regardless of what kind of editing (or non editing) I do in VS 10, the resulting video has clicks and pops in the audio.

Here is the info I got when I added one of the .VOB files to the VS 10 clips library and right-clicked to see the properties:

Code: Select all

E:\data\Videos\200701Raw\VIDEO_TS\VTS_01_1.VOB
File format: NTSC DVD
File size: 1,022,184 KB
Duration: 32.132 seconds

Video type: MPEG-2 Video, upper field first
Total frames: 963 frame(s)
Attributes: 24 bits, 720 x 480, 16:9
Frame rate: 29.970 frames/sec
Data rate: 7500 kbps

Audio type: Dolby Digial Audio
Total samples: 1,542,342 samples
Attributes: 48000 Hz
Layer: none
Bit rate: 256 kbps

The only odd thing I noticed is that VS 10 reports the clip is only 32 seconds long and has 963 frames, when it's really more like 20 minutes long. Is this a sign of a malformed .VOB file? The source DVD plays fine in DVD players.

Thanks for any suggestions...

[Black Lab]

The fact that your properties are incorrect has me puzzled. Try this. Put the DVD in your pc's tray. Now from the VS Capture tab choose Import from DVD/DVD-VR. Now choose Import (instead of Import DVD Folder). Choose your chapters or the entire title by ticking the appropriate boxes, then press Import. Check the resulting clip(s). Are the properties correct?

I just did that with a DVD I had on my desk and the resulting clip shows properties of:

File size: 19,242 KB
Duration: 36.970 seconds

Total Frames: 1,108
Frame rate: 29.97 frames/sec.

1,108 frames ¡Ò 29.97 frames/sec. = 36.98 seconds

[etech6355]

It appears to me that there's something wrong or different with your dvd.

Usually 5.1 audio is at least 384kbs for 5.1 channel.
The audio properties look like a standard 2/0 dolby track. If VS thinks it's 5.1 then that explains the poor audio.

Where did this dvd come from and how was it created? What software was used to create the original dvd your source files are coming from?

If the dvd was ripped, copied or re-compressed using some dvd tools then that's where the problem lies.
Usually when a dvd is processed by another program it's not to easy to edit or import the dvd.

I have come across a dobly bug when importing from one of my dvd recorders. But I don't think that's your same problem because my audio is fine on the final dvd. It's only bad when previewing and it's not crackle or pops, it's just distorted.