M2V/MPG and audio at DVinfo.net

James Brill · September 9th, 2009, 03:16 PM

I have started playing around with the Nanoflash's ability to create transport streams and have had issues creating audio. The video looks great at 35Mbps and drops into Encore CS4 no problem. However, either audio isn't created during the recording process or the applications I'm using are seeing the embedded audio in the stream.

Am I wrong in thinking their should be audio with these files?

Mike Schell · September 9th, 2009, 08:20 PM

Quote:

Originally Posted by James Brill

I have started playing around with the Nanoflash's ability to create transport streams and have had issues creating audio. The video looks great at 35Mbps and drops into Encore CS4 no problem. However, either audio isn't created during the recording process or the applications I'm using are seeing the embedded audio in the stream.

Am I wrong in thinking their should be audio with these files?

Hi James-
Our hardware engineer is looking into the audio in the MPG file. I suspect we're not 100% compatible with the spec, as we have discovered playback issues on long files. Please allow a few more days of debug and testing to get this corrected.

Best-

James Brill · September 9th, 2009, 10:00 PM

Okay. Just to clarify I've got no audio for both M2V and MPG

Dan Keaton · September 10th, 2009, 02:57 AM

Dear James,

M2V is a video only format, so there not any audio by design.

MPG should have audio. We are checking into this.

Lance Librandi · September 11th, 2009, 07:12 AM

Hi Dan,
Well today I got my brand new NanoFlash just waiting for media and I can try all this stuff.
What I want to ask is why have an M2V video only format or is audio planned be included with future upgrades?
Most of my work is distributed to CD and BD and this could have an enormous benefit to production workflow.

Thanks

Dan Keaton · September 11th, 2009, 07:20 AM

Dear Lance,

The ".MPG" file format, according to the published standard, has both audio and video, and can be used to create a file ready to be burned to a DVD or Blu-ray.

The ".M2V" file format, according to the published standard, has video only, and can be used to create a file ready to be burned to a DVD or Blu-ray.

So the choice is yours. We offer both so the user can use whichever one is appropriate.

I am worried that some may choose ".M2V" when they also want audio recorded. Since ".M2V" does not have audio, the file is smaller.

Lance Librandi · September 11th, 2009, 08:10 AM

Thanks for clearing that up Dan.
I do understand that you are producing equipment to a standard what I am questioning is the standard.

I just fail to understand why a standard was developed without sound unless the audio was to imported by other means.

I will make sure I do not select that option.

Cheers

Lance Librandi · September 11th, 2009, 08:45 AM

Hey Dan,
I think I get it now you use the Nano as a recorder form your NLE timeline record the MPEG2 elementary stream (video only) in real time saving long rendering time using compressor. Your then only need to render the audio only which should not take long at all . Then drop them both into the Blu-ray authoring software and you have saved many hour of render time.
I have been focused on the Nano for acquisition for the camera and not as authoring tool.
Thanks

Dan Keaton · September 11th, 2009, 09:12 AM

Dear Lance,

Yes!

We think these new features add significant value to the Flash XDR and nanoFlash.

These new features are in the nanoFlash right now, with firmware 1.0.64, and will be added to the Flash XDR soon. Our firmware update for the Flash XDR is currently being tested.

James Brill · September 11th, 2009, 10:29 AM

Dan - With regards to the MPG stream, is there an application you recommend using to burn them quickly to blu ray for simple playback? I used a free app called TSmuxer which quickly made the folders found on a Blu Ray and then you just burnt them like data. I figure Encore isn't terrible but to just get video onto a disk for dailies it seems a bit overboard.

Lance Librandi · September 11th, 2009, 07:18 PM

Dan – You guys are really surprising me all the time, when I ordered my NanoFlash I had one application for it (Good quality SD) now you have opened the door and made it a very versatile multifunction unit. I can’t wait to see what you guys will come up with next.

I had a Media 100 iFinsh system which had realtime mpeg encoder board (Sony chip set) which in the early day’s of DVD production allowed me to make the mpeg stream in realtime and burn to disk. I know the amount of time this saved me and I was able to get product out very quickly which gave me a marketing advantage. Given that the amount of data for Blu-ray authoring is so much more than DVD the Nano is going to be an essential part of our production suite. I will be working with this feature as soon as my media arrives to find my best workflow to build Blu-ray disk’s.

Thanks

Dan Keaton · September 11th, 2009, 08:04 PM

Dear James,

We have been testing various DVD / Blu-ray burning software in our lab.

When possible, we will report our results.

In the meantime, we would welcome suggestions as to the specific software that our friends would like to use.

Dan Keaton · September 11th, 2009, 08:08 PM

Dear Lance,

We really appreciate you kind thoughts.

We have some exciting new features coming up.

Barry J. Weckesser · September 12th, 2009, 09:04 PM

Quote:

Originally Posted by Lance Librandi

Hey Dan,
I think I get it now you use the Nano as a recorder form your NLE timeline record the MPEG2 elementary stream (video only) in real time saving long rendering time using compressor. Your then only need to render the audio only which should not take long at all . Then drop them both into the Blu-ray authoring software and you have saved many hour of render time.
I have been focused on the Nano for acquisition for the camera and not as authoring tool.
Thanks

Quote:

Originally Posted by Dan Keaton

Dear Lance,

Yes!

We think these new features add significant value to the Flash XDR and nanoFlash.

These new features are in the nanoFlash right now, with firmware 1.0.64, and will be added to the Flash XDR soon. Our firmware update for the Flash XDR is currently being tested.

I assume this means that your particular NLE outputs HD-SDI or HDMI from your editing workstation (for example Edius (Grass Valley) 5.0 with HDSPARK for HDMI or HDTHUNDER for HD-SDI output)? You then are able to write the m2v files to the CF cards and then copy to your hard disk and into the particular Blu-ray authoring program?

If that is the case you have added a feature found in certain hardware cards (e.g. Firecorder Blu from Grass Valley - however this does conversion to H.264 and MPEG-2 but not m2v and is rather buggy and incompatible with some authoring programs).

Would be very interested to see your test results with DVDitProHD.

Lance Librandi · September 12th, 2009, 09:27 PM

Hi Barry,
I use FCP 7 with Mac Book Pro and have in the last few months moved to HD, my system is set up SD and analogue. I now have to purchase a firewire device that will give me hd sdi which will also include analogue outputs and compatible with FCP 7. I am still look at various option, once I have the system in place I will post my results which may not be till the end of the month.

September 9th, 2009, 03:16 PM	#1
James Brill Major Player Join Date: Aug 2007 Location: Goleta, CA Posts: 299	M2V/MPG and audio I have started playing around with the Nanoflash's ability to create transport streams and have had issues creating audio. The video looks great at 35Mbps and drops into Encore CS4 no problem. However, either audio isn't created during the recording process or the applications I'm using are seeing the embedded audio in the stream. Am I wrong in thinking their should be audio with these files?

September 10th, 2009, 02:57 AM	#4
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Dear James, M2V is a video only format, so there not any audio by design. MPG should have audio. We are checking into this. __________________ Dan Keaton Augusta Georgia

September 11th, 2009, 07:20 AM	#6
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Dear Lance, The ".MPG" file format, according to the published standard, has both audio and video, and can be used to create a file ready to be burned to a DVD or Blu-ray. The ".M2V" file format, according to the published standard, has video only, and can be used to create a file ready to be burned to a DVD or Blu-ray. So the choice is yours. We offer both so the user can use whichever one is appropriate. I am worried that some may choose ".M2V" when they also want audio recorded. Since ".M2V" does not have audio, the file is smaller. __________________ Dan Keaton Augusta Georgia

September 11th, 2009, 09:12 AM	#9
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Dear Lance, Yes! We think these new features add significant value to the Flash XDR and nanoFlash. These new features are in the nanoFlash right now, with firmware 1.0.64, and will be added to the Flash XDR soon. Our firmware update for the Flash XDR is currently being tested. __________________ Dan Keaton Augusta Georgia

September 11th, 2009, 08:04 PM	#12
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Dear James, We have been testing various DVD / Blu-ray burning software in our lab. When possible, we will report our results. In the meantime, we would welcome suggestions as to the specific software that our friends would like to use. __________________ Dan Keaton Augusta Georgia

September 9th, 2009, 10:00 PM	#3
James Brill Major Player Join Date: Aug 2007 Location: Goleta, CA Posts: 299	Okay. Just to clarify I've got no audio for both M2V and MPG

September 11th, 2009, 07:12 AM	#5
Lance Librandi Major Player Join Date: Aug 2009 Location: South Australia Posts: 374	Hi Dan, Well today I got my brand new NanoFlash just waiting for media and I can try all this stuff. What I want to ask is why have an M2V video only format or is audio planned be included with future upgrades? Most of my work is distributed to CD and BD and this could have an enormous benefit to production workflow. Thanks

September 11th, 2009, 08:10 AM	#7
Lance Librandi Major Player Join Date: Aug 2009 Location: South Australia Posts: 374	Thanks for clearing that up Dan. I do understand that you are producing equipment to a standard what I am questioning is the standard. I just fail to understand why a standard was developed without sound unless the audio was to imported by other means. I will make sure I do not select that option. Cheers

September 11th, 2009, 08:45 AM	#8
Lance Librandi Major Player Join Date: Aug 2009 Location: South Australia Posts: 374	Hey Dan, I think I get it now you use the Nano as a recorder form your NLE timeline record the MPEG2 elementary stream (video only) in real time saving long rendering time using compressor. Your then only need to render the audio only which should not take long at all . Then drop them both into the Blu-ray authoring software and you have saved many hour of render time. I have been focused on the Nano for acquisition for the camera and not as authoring tool. Thanks

September 11th, 2009, 10:29 AM	#10
James Brill Major Player Join Date: Aug 2007 Location: Goleta, CA Posts: 299	Dan - With regards to the MPG stream, is there an application you recommend using to burn them quickly to blu ray for simple playback? I used a free app called TSmuxer which quickly made the folders found on a Blu Ray and then you just burnt them like data. I figure Encore isn't terrible but to just get video onto a disk for dailies it seems a bit overboard.

September 11th, 2009, 07:18 PM	#11
Lance Librandi Major Player Join Date: Aug 2009 Location: South Australia Posts: 374	Dan – You guys are really surprising me all the time, when I ordered my NanoFlash I had one application for it (Good quality SD) now you have opened the door and made it a very versatile multifunction unit. I can’t wait to see what you guys will come up with next. I had a Media 100 iFinsh system which had realtime mpeg encoder board (Sony chip set) which in the early day’s of DVD production allowed me to make the mpeg stream in realtime and burn to disk. I know the amount of time this saved me and I was able to get product out very quickly which gave me a marketing advantage. Given that the amount of data for Blu-ray authoring is so much more than DVD the Nano is going to be an essential part of our production suite. I will be working with this feature as soon as my media arrives to find my best workflow to build Blu-ray disk’s. Thanks

September 11th, 2009, 08:08 PM	#13
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Dear Lance, We really appreciate you kind thoughts. We have some exciting new features coming up. __________________ Dan Keaton Augusta Georgia

September 12th, 2009, 09:27 PM	#15
Lance Librandi Major Player Join Date: Aug 2009 Location: South Australia Posts: 374	Hi Barry, I use FCP 7 with Mac Book Pro and have in the last few months moved to HD, my system is set up SD and analogue. I now have to purchase a firewire device that will give me hd sdi which will also include analogue outputs and compatible with FCP 7. I am still look at various option, once I have the system in place I will post my results which may not be till the end of the month.