Re-encoding interlaced order?

[drewzor]

Hey everyone, just a quick question..
I have three Cam video's and the first two have produce avi files interlaced TFF and the last one BBF..

I'm using tmpgenc to create .mpg files for backup and it has an option to
make the BBF interlaced video TTF.. will this cause any issues with display output?

I noticed when I was editing these avi files in the final encode it was noticeable that there was something wrong with the clips that used the third camera..

Will this help and when using premiere should all video have the same properties or does the software manage that?


Sorry for all the questions but your help will be appreciated

[guns1inger]

What is the source ? If they are DV they should all be BFF.

If they are downloaded pirated CAM videos then they could be anything (except high quality) and can't be discussed here.

[drewzor]

interesting.. they are dv sources... why is one bbf then?

they are from a wedding where i used three camera's two sony and one canon

[drewzor]

Gspot has identified the bbf

[guns1inger]

How were they transferred ?

Don't rely on G-Spot or any other software to give you a definitive field order.

[drewzor]

imported through ulead studio software that came with the sony camera
created dv files automatically too

[jagabo]

I'm using tmpgenc to create .mpg files for backup and it has an option to make the BBF interlaced video TTF.. will this cause any issues with display output?

Field order can be reversed by shifting the frame up or down by one scan line. Are you sure you're changing the field order not just overriding the source field order (ie telling it the source is TFF rather than BFF)?

I noticed when I was editing these avi files in the final encode it was noticeable that there was something wrong with the clips that used the third camera..

Encoding with the wrong field order will make motions jerk back and forth very quickly on playback, 25 times a second with PAL video.

[drewzor]

I'll explain my situation with some more detail,
I have taken 3 video cameras and imported 2 of the video with Ulead studio. the third camera was dvd .. I used virtualdub to pull out the VOB file and convert it to huffy avi..

I edited all three video files into one clip.. the parts of the video that use the huffy avi seem poor in motion detail

Gspot suggests that the two imported files are TTF and the huffy clip is BBF..

Because these files are very large I was using TMPGenc to convert to MPG.
There is an option in the encode tap for progressive or interlaced and a sub selection TFF or BFF..

If I choose TFF will it shift the frame up and correct the interlace order?
and didn't premiere automatically produce the videos with the corrected order??

[jagabo]

I'll explain my situation with some more detail,
I have taken 3 video cameras and imported 2 of the video with Ulead studio. the third camera was dvd .. I used virtualdub to pull out the VOB file and convert it to huffy avi..

I edited all three video files into one clip.. the parts of the video that use the huffy avi seem poor in motion detail

The symptom of encoding with the wrong field order flag is fast-jerky video, not a loss of detail.

Gspot suggests that the two imported files are TTF and the huffy clip is BBF..

AVI and HuffYUV have no field order flag. Are you saying the original VOB was BFF? GSpot isn't entirely reliable at determining field order. I would use DgIndex to determine field order of a VOB or MPG file.

Because these files are very large I was using TMPGenc to convert to MPG.
There is an option in the encode tap for progressive or interlaced and a sub selection TFF or BFF..

Which TMPGEnc are you talking about? They may many products. If you are talking about TMPGEnc Plus -- the field order setting simply lets you override what the program thinks of the field order. TMPGEnc Plus is not good at determining field order so you often need this override.

If I choose TFF will it shift the frame up and correct the interlace order?

If you are talking about TMPGEnc Plus: If you tell the program the source is TFF it produces an MPG file flagged as TFF. If you tell the program the source is BFF it produces an MPG file flagged as BFF. It doesn't reverse the field order. I don't know if their other products allow you to reverse the field order.

and didn't premiere automatically produce the videos with the corrected order??

If you give it a file flagged with the wrong field order it will produce output with the wrong field order.