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Question

Help exporting 50p HD source as 25i

Forum|Forum|1 year ago
April 5, 2024
2 replies
976 views

I have a 50p HD source that I want to export as interlaced SD video, for DVD authoring.

The 50p source is an sport event, and I don't want it as 25p in the DVD.

I need that the export takes into account all frames from the source.

Odd frames in the source should be used for generating top fields in the interlaced output.

Even frames in the source should be used for generating bottom fields in the interlaced output.

I've tried all settings, but the result is always the same: both fields in the output come from the same frame of the source, and all even frames of the source are discarded.

So, what I get is a 25i video that looks exactly as 25p.

I'd like to know what the settings should be in Adobe Premiere, so I can obtain a proper interlaced video.

Thank you.

This topic has been closed for replies.

Averdahl

Community Expert

I have a 50p HD source that I want to export as interlaced SD video, for DVD authoring.

By @Fabian70

Export from a 50p HD sequence using those settings to get an interlaced DVD compliant MPEG2 file. Bitrate settings are harder to predict since i don´t know the length of the footage.:

F

Fabian70Author

Participant

Thank you for your answer.

I have tried your suggested settings, but it produces the undesired effect I talked about.

The output is a 25i file, but both fields (top and bottom) come from the same frame of the source.

I would like that Premiere takes two frames from the input to generate one frame of the output (odd frames for top fields, and even frames for bottom fields). Otherwise, the 25i output looks like 25p.

Thanks.

Averdahl

Community Expert

I have tried your suggested settings, but it produces the undesired effect I talked about.

The output is a 25i file, but both fields (top and bottom) come from the same frame of the source.

By @Fabian70

Did you solve it?

If not, here are some info needed:

What version of Premiere Pro do you use?
Win or Mac?
How do you export, from the Project panel or from a timeline?
If timeline, post all settings of that sequence?
Where does the footage come from, camera or?
If you place the footage in a timeline and step forward/backward frame by frame, are really each frame unique?
How do you view the exported footage and determine that the export is wrong?

R

Richard M Knight

Community Expert

Try making a 25i sequence and adding the 50P to that sequence. Then export as 25i.

If you would like to Dropbox a short 50P clip I could have a look.

F

Fabian70Author

Participant

Thank you for your reply.

That was my first try. I get a 25i output, but both fields on each frame come from the same frame of the 50p file.

I don't have a Dropboz account. Thanks anyway.

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