Odyssey 7Q Audio and Blackmagic Media Express at DVinfo.net

Bill LiPera · December 2nd, 2015, 11:43 AM

Blackmagic Media express plays Odyssey 7Q 4K prores 422 footage beautifully but there's no audio. It appears that 7Q 4 Kprores video 422 records 32 bit audio. If I convert the footage to 4K prores 422 with 24 bit audio then the sound plays well. Is there any way to record 24bit audio with the Odyssey 7Q so that the conversion and the recompression can be skipped. Thank you.

Dan Keaton · December 7th, 2015, 11:36 AM

Dear Bill,

I am alerting our team about this.

We will attempt to duplicate this in our lab.

I will provide more information after I discuss this with our team.

Respectfully,

Dan Keaton · December 7th, 2015, 01:34 PM

Dear Bill,

I received word back from our Lab Manager.

"This is most likely a setting with Media Express, as we use this for testing with Apple Certification"

Are you using a Mac or a PC?

Respectfully,

Bill LiPera · December 7th, 2015, 05:02 PM

Thanks for the response I'm using a pc . I can't seem to find that setting in Media Express. Thank you

Olof Ekbergh · December 8th, 2015, 07:29 AM

On Macs the settings are in System Prefs/Desktop Video. There are many audio/video settings there, depending on your hardware.

Jack Zhang · August 29th, 2016, 02:43 AM

Just bumping this thread, can someone give me the output of a "ffmpeg -i (input file).mov" of a file like this? and can this be remedied with a simple command like this?

Code:

ffmpeg -i "(input file).mov" -c:v copy -c:a pcm_s24le "(output file).mov"

Dan Keaton · August 29th, 2016, 04:39 AM

Dear Jack,

I am sorry, but I do not have an answer for you.

I will check with our team.

Respectfully,

Jack Zhang · October 31st, 2016, 07:31 PM

Hey Bill,

I just tried out converting the audio using an FFmpeg command and I can tell you it works in Media Express on machines with Quicktime installed. (Protip: Media Express will not read ProRes files on Windows unless Quicktime is installed. You can use the "for NLEs" installation method and not install the player.)

Here's the command you have to enter in ffmpeg:

Code:

ffmpeg -guess_layout_max 0 -i "(path to input file, ending in .mov)" -r (Frame rate from the clip's XML file in the same folder as your source clips. Round up non-drop frame rates to whole numbers, AKA don't include decimal points.) -c:v copy -c:a pcm_s24le "(path to output file, ending in .mov)"

Hope this helps.

December 2nd, 2015, 11:43 AM	#1
Bill LiPera Regular Crew Join Date: Sep 2012 Location: St. James New York Posts: 27	Odyssey 7Q Audio and Blackmagic Media Express Blackmagic Media express plays Odyssey 7Q 4K prores 422 footage beautifully but there's no audio. It appears that 7Q 4 Kprores video 422 records 32 bit audio. If I convert the footage to 4K prores 422 with 24 bit audio then the sound plays well. Is there any way to record 24bit audio with the Odyssey 7Q so that the conversion and the recompression can be skipped. Thank you.

December 7th, 2015, 11:36 AM	#2
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Re: Odyssey 7Q Audio and Blackmagic Media Express Dear Bill, I am alerting our team about this. We will attempt to duplicate this in our lab. I will provide more information after I discuss this with our team. Respectfully, __________________ Dan Keaton Augusta Georgia

December 7th, 2015, 01:34 PM	#3
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Re: Odyssey 7Q Audio and Blackmagic Media Express Dear Bill, I received word back from our Lab Manager. "This is most likely a setting with Media Express, as we use this for testing with Apple Certification" Are you using a Mac or a PC? Respectfully, __________________ Dan Keaton Augusta Georgia

December 7th, 2015, 05:02 PM	#4
Bill LiPera Regular Crew Join Date: Sep 2012 Location: St. James New York Posts: 27	Re: Odyssey 7Q Audio and Blackmagic Media Express Thanks for the response I'm using a pc . I can't seem to find that setting in Media Express. Thank you

December 8th, 2015, 07:29 AM	#5
Olof Ekbergh Sponsor: Westside AV Join Date: Dec 2008 Location: Mount Washington Valley, NH, USA Posts: 1,365	Re: Odyssey 7Q Audio and Blackmagic Media Express On Macs the settings are in System Prefs/Desktop Video. There are many audio/video settings there, depending on your hardware. __________________ Olof Ekbergh • olof@WestsideAV.com Westside A V Studios • http://www.WestsideAVstore.com/

August 29th, 2016, 02:43 AM	#6
Jack Zhang Inner Circle Join Date: May 2005 Location: Burnaby, BC, Canada Posts: 3,053	Re: Odyssey 7Q Audio and Blackmagic Media Express Just bumping this thread, can someone give me the output of a "ffmpeg -i (input file).mov" of a file like this? and can this be remedied with a simple command like this? Code: ffmpeg -i "(input file).mov" -c:v copy -c:a pcm_s24le "(output file).mov"

August 29th, 2016, 04:39 AM	#7
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Re: Odyssey 7Q Audio and Blackmagic Media Express Dear Jack, I am sorry, but I do not have an answer for you. I will check with our team. Respectfully, __________________ Dan Keaton Augusta Georgia

October 31st, 2016, 07:31 PM	#8
Jack Zhang Inner Circle Join Date: May 2005 Location: Burnaby, BC, Canada Posts: 3,053	Re: Odyssey 7Q Audio and Blackmagic Media Express Hey Bill, I just tried out converting the audio using an FFmpeg command and I can tell you it works in Media Express on machines with Quicktime installed. (Protip: Media Express will not read ProRes files on Windows unless Quicktime is installed. You can use the "for NLEs" installation method and not install the player.) Here's the command you have to enter in ffmpeg: Code: ffmpeg -guess_layout_max 0 -i "(path to input file, ending in .mov)" -r (Frame rate from the clip's XML file in the same folder as your source clips. Round up non-drop frame rates to whole numbers, AKA don't include decimal points.) -c:v copy -c:a pcm_s24le "(path to output file, ending in .mov)" Hope this helps.