demuxing HDV files captured with FCP (for blu-ray)

[Rafael Amador]

Try “ffmpgx”.
It has an Demuxing option. Not sure if will work, you may need to change the file extensio (.mpg/.VOB?).
Free here:
https://www.ffmpegx.com/
rafael

http://www.nagavideo.com

[Chris Tompkins]

Demuxing is the wrong term/process.

You should export your finished edit using “Current Settings”
The creates a QT master.

Take that file into your compression program:

Compressor
AME
Episode
Squeeze

to create the DVD compliant files (mpeg2)

You can import the mov file directly into DVDSP or Encore and let it convert the files, not the best though.

Chris Tompkins
Video Atlanta LLC

[Emmanuel Presselin]

Sorry, I think I was not clear.

The aim is burning a blu ray without reencoding.
HDV is almost blu ray compliant. The only thing is to be able to demux the HDV stream into 2 elementary streams. Then I can author my blu ray in Encore, without reencoding, which means pristine quality.

My trouble is just about finding the most efficient tool to demux HDV on the mac.

Thanks
Emmanuel

[Chris Tompkins]

Export your finished edit using “Current Settings”

Drop that file into AME or Compressor and select the Bluray preset. This will make your mpeg files (audio and video) for bluray authoring.

Chris Tompkins
Video Atlanta LLC

[Emmanuel Presselin]

Thanks, but that’s not what I am looking for.

HDV is almost blu ray compliant.
It’s 1440×1080@50i mpeg2, which is fully part of blu ray specs. So when working wit HDV material, there is no need to recompress with third part application. I have already made blu rays this way. No recompression means a significant gain of time and quality. The workflow is just to split the HDV stream into 2 elementary streams. These elementary streams are blu ray compliant, straight, which is the best method possible for HDV material.

The little drawback is that process of demuxing (splitting) the streams in HDV is not support by a lot of apps. That’s why I’m looking for some user’s experience.

Thank you
Emmanuel

[Peter Hall]

Chris, (pardon, Emmanuel) Is it better to convert HDV QT movies to mpeg2 via Compressor rather than to let iDVD or DVDSP do the encoding?

Peter Hall

[Chris Tompkins]

Yes, I believe so. It is better to use a compression program.

With that being said though, you can go into the DVDSP preferences and b/4 you import the media, set all your specs and settings for encoding to maximize the quality.

Importing QT’s directly into DVDSP app is the easier way to go for those who don’t want to mess with settings and details.

Chris Tompkins
Video Atlanta LLC

[Peter Hall]

Thanks Chris.

Peter Hall

[Eric Pautsch]

If youve done this before why are you asking us? 🙂 Youre demuxing HDV with DVDSP?? Your either mistaken or really really high 🙂

This is incorrect. HDV is not compliant. Not even almost complaint 🙂 Encore will reencoding your file so why not encode correctly using Compressor to H.264 ?

Futhermore, 1440×1080 50i is only supported when encoded AVC or VC-1 only. I believe, since you know HDV is a H.262/MPEG-2 Part 2 based, its ready to drop into a BD authoring tool? This is not the case.

Here are the official specs

High Definition Video
1920x1080x59.94i(=29.97fps interlaced), 50i(=25fps interlaced) (16:9)
1920x1080x24p, 23.976p (16:9)
1440x1080x59.94i, 50i (16:9) AVC / VC-1 only
1440x1080x24p, 23.976p (16:9) AVC / VC-1 only
1280x720x59.94p, 50p (16:9)
1280x720x24p, 23.976p (16:9)
Standard Definition Video
720x480x59.94i (4:3/16:9)
720x576x50i (4:3/16:9)

[Rafael Amador]

[eric pautsch] “since you know HDV is a H.262/MPEG-2 Part 2 based,”
HDV is plain MPG-2 LGOP/CBR 25Mbps, nothing related with H264.

[eric pautsch] “If youve done this before why are you asking us? 🙂 Youre demuxing HDV with DVDSP?? Your either mistaken or really really high :)”
Hi is askink because this forum is to ask.
If he is wrong, you explain him why and you point him in the correct direction.
rafael

http://www.nagavideo.com