ASK & DISCUSS INDEX

9 years, 8 months ago - Claire Buckley

There are technical specifications which you should adhere to in order to present, broadcast or otherwise to the audience. You should not allow peaks (DBFS) to levels greater than -6db for DVDs for example. Blu Ray standards do not differ.

Also, it's likely your presentation is being compressed. In the old analogue broadcast days it was a system called Audimax. Here in the UK, prior to broadcast acceptance, programme material needs to pass a "Loudness" check for peak averages against time. I'm not going to get involved here explaining them, but you should understand the requirements of the publishing and broadcast channel workflow in the same way your video quality and content is being measured.

It sounds like (pun not internded) you did not use dynamic compression during the track lay or lay-back or understand the technical requirements of audio sufficitiently well enough during your production. Here's the classic example of "never mind the audio, look how greaat my pictures are..."

Audio should be treated with as much respect and craft as your images.

Dynamic range as you record it, or intend it, does not always fit into the dynamic range capabilities of the publishing broadcast channel. You need to taylor your content accordingly, otherwise, it will be compressed in ordfer not to clip (distort) the output to the audience.

9 years, 8 months ago - Andrew Morgan

If your audio is encoded as Dolby AC3 then that's likely Dialnorm doing its thing - encoding with PCM audio should leave the audio as mastered.

9 years, 8 months ago - Richard Connew

Vegas PRO has various options to tweak the sound levels change sub/LFE to different cross over 80/120 etc all of which make a BIG difference to the sound. I normally use Premiere PRO for editing but I use Vegas for burning a disk because of the flexibility it offers straight from its time line including burning full 3D sequential blu-rays. As Claire said above sound makes or breaks a film so spending time getting it right is never time wasted. Nero I'm sorry to say other then burning copies of the iso master you created in Vegas or similar is quite simple just not designed for this which is why you are having problems.
DCP's have long been a licence for many people to print money but the reality with Open DCP and similar around for free is anyone can do it. The main issue is make sure you have true 24fps video (not 23.976) and sound length! Second one is the conversion to XYZ colour with gamma 2.6 that can also ruin the finished DCP. Stereoscopic player while meant for 3D content can play 2D content DCP's as well so for the few pounds it costs, well worth the money to check how it all looks and works if you don't have a friendly projectionist handy. If you use Premiere PRO there is a free plugin to create XYX Jpeg 2000 files direct from the time line instead of first rendering Tiffs or DPX's before then rendering them out to XYX Jpeg 2000 files so its a lot faster. So really there shouldn't be any extra cost if you do it yourself - it isn't that difficult despite what others bigging them selves up might say.