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Mpegs Are Being Encoded With Wrong Length/duration


nuspieds
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Hi,

 

For some reason, some of my MPG files (it seems to be only those longer than 1 minute) are being encoded with the wrong duration. Here are some examples:

 

1) Actual Movie Length = 1:02, Production Editor/Encoded/Burned Length = 1:36

2) Actual Movie Length = 1:02, Production Editor/Encoded/Burned Length = 2:05

3) Actual Movie Length = 1:16, Production Editor/Encoded/Burned Length = 3:01

4) Actual Movie Length = 1:09, Production Editor/Encoded/Burned Length = 1:39

 

As you can see from above, it never shortens the duration, just lengthens it. The net result, when viewed, is that when the movie really ends, you see the last frame of the movie (no movement, like if it is on pause) until it reaches the encoded end.

 

Windows Media Player plays them fine and has the correct lengths.

 

As an example, for the first file, I went into the Production Editor, right-clicked, selected "Properties..." and this is what I saw on the "Editing" and "Detail" tabs:

 

Editing Tab:

In Point = 00:00:00.017

Out Point = 00:01:35.679

Duration = 00:01:35.662

Start = 00:00:00.017

End = 00:01:35.679

 

Detail Tab:

Type = MPEG-1

Data Rate = 2848 Kbps

Length = 00:01:01.83

 

Frame Size = 640 x 480 pixels

Frame Rate = 25.00 fps

Compression = MPEG Video Decoder

 

Format = 32000 Hz, Mono

Compression = Sonic Cinemaster Audio Decoder 4.3

 

As you can see from above, the length is correct on the Detail tab, but for some reason it is 1:36 on the Editing tab.

 

What's happening??!!! Help! I desperately need to have this resolved, as I don't want to burn movies with a longer duration than they actually are.

 

Thanks!

 

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Hi,

 

For some reason, some of my MPG files (it seems to be only those longer than 1 minute) are being encoded with the wrong duration. Here are some examples:

Detail Tab:

Type = MPEG-1

Data Rate = 2848 Kbps

Length = 00:01:01.83

 

Frame Size = 640 x 480 pixels

Frame Rate = 25.00 fps

Compression = MPEG Video Decoder

 

Format = 32000 Hz, Mono

Compression = Sonic Cinemaster Audio Decoder 4.3

 

Thanks!

 

Where did you get the videos? Please give us more detail on how you are encoding the videos.

 

mpg1 is not DVD quality, the data rate is low and 25 fps is not standards in the US.

 

I would guess that the time error is an artifact of the encoding. What are you trying to do? Are you enciding to VCD or SVCD?

Edited by sknis
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Where did you get the videos? Please give us more detail on how you are encoding the videos.

 

mpg1 is not DVD quality, the data rate is low and 25 fps is not standards in the US.

 

I would guess that the time error is an artifact of the encoding. What are you trying to do? Are you enciding to VCD or SVCD?

 

Hi, the mpegs are from my Sony DSC-H1 digital camera. Yeah, they're not DVD quality, but for my purposes, it's fine.

 

I'm burning to DVD. I'm a basic user, so all I'm doing for my production is just simply adding Slideshows for my pictures and then "Add Movie" for the mpegs. When I'm done, I click that burn button. That's all.

 

I did this last year with EMC 9 and never had this problem.

 

Thanks.

Edited by nuspieds
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Have you burned them to a DVD? Do the DVD's play properly?

 

Yes, I have burned them.

 

Yes, I have played them on the DVD player and the end result, when viewed, is that that when the movie really ends, all you see is the last frame (no movement, as if it is on pause) until it reaches the encoded end.

 

Again, Windows Media Player plays these fine and has the right length. I also just tried Nero and it also plays and has the accurate length.

 

Right now, the only solution seems to be to go through every movie, open the production editor, verify and set the end time if necessary. Talk about a royal pain in the butt! I have hundreds of mpegs!!! :(

 

Thanks.

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Yes, I have burned them.

 

Yes, I have played them on the DVD player and the end result, when viewed, is that that when the movie really ends, all you see is the last frame (no movement, as if it is on pause) until it reaches the encoded end.

 

Again, Windows Media Player plays these fine and has the right length. I also just tried Nero and it also plays and has the accurate length.

 

Right now, the only solution seems to be to go through every movie, open the production editor, verify and set the end time if necessary. Talk about a royal pain in the butt! I have hundreds of mpegs!!! :(

 

Thanks.

What results do you get with the program that came with the camera - Motion Picture Browser?

 

I am confused; that camera captures video in two different frame rates.

 

"In Movie mode, you can record moving images and sound, for as long as the Memory Stick or internal memory has space. Resolution and quality choices are 640 x 480 Fine (30fps), 640 x 480 Normal (fps), or 160 x 112 (fps). ... Recording in 640 x 480 Fine (fps) mode is only available with a Memory Stick Pro card."

 

That is nowhere near 25 fps.

 

I can't seem to determine what format that camera captures - is it motion MPEG1, mpeg2, mjpeg, mov or other?

 

 

 

 

 

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What results do you get with the program that came with the camera - Motion Picture Browser?

 

I am confused; that camera captures video in two different frame rates.

 

"In Movie mode, you can record moving images and sound, for as long as the Memory Stick or internal memory has space. Resolution and quality choices are 640 x 480 Fine (30fps), 640 x 480 Normal (fps), or 160 x 112 (fps). ... Recording in 640 x 480 Fine (fps) mode is only available with a Memory Stick Pro card."

 

That is nowhere near 25 fps.

 

I can't seem to determine what format that camera captures - is it motion MPEG1, mpeg2, mjpeg, mov or other?

 

The movies play perfectly fine in every other software I've used--including my Sony camera. Yes, on my Sony I'm recording to a Memory Stick Pro. But, again, when I had EMC 9, this was never an issue. Furthermore, these movies play perfectly fine and have the accurate length in Windows Media Player, Nero, Directory Opus viewer, and other players I've tried. Moreover, on the "Detail" tab in EMC 10, it has the accurate length; it's only on the "Editing" tab that it has the erroneous (longer) length.

 

I've been using the exact same camera, taking the exact same type of movies, using the exact same settings, since EMC 9. Regarding settings on my camera, that's easy: I'm a novice, so I didn't even play with those options. The point being that I never experienced this issue with EMC 9 and the videos play perfectly and have the accurate length in other players/viewers.

 

Thanks!

Edited by nuspieds
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Update: The problem was just in one project. All other projects were fine. As such, I ended up just going back into the Production Editor, and then removing and then re-adding the movies and that solved the problem.

 

I'm thinking perhaps a corrupted dmsd file or something. Whatever the case, it was isolated to just 1 of 4 files, so I am not concluding that it is an EMC 10 problem. Must have been something with the dmsd file.

 

Thanks, everyone, for your help and suggestions!

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Update: The problem was just in one project. All other projects were fine. As such, I ended up just going back into the Production Editor, and then removing and then re-adding the movies and that solved the problem.

 

I'm thinking perhaps a corrupted dmsd file or something. Whatever the case, it was isolated to just 1 of 4 files, so I am not concluding that it is an EMC 10 problem. Must have been something with the dmsd file.

 

Thanks, everyone, for your help and suggestions!

 

Glad you were able to find and solve your problem. :)

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