![]() ![]() If Fairlight isn't a DAW, the person writing copy for BlackMagic does not know that. Fairlight is the only digital audio workstation software with a modern, super low latency audio engine capable of handling massive numbers of tracks, advanced bussing to simplify mixing, easy channel mapping options and multi format mastering in the same project. I've searched the manual and the forums, and I haven't seen anyone else post about recording bit rates in Resolve (there was a topic on editing them, a feature which came around sometime last year), so I thought I'd ask: can we get 32-bit float audio recording in Resolve / Fairlight?įairlight Product Page wrote:You get dozens of professional tools for recording, editing, mixing, dialog replacement, sound clean up and repair, equalization, dynamics processing, and mastering soundtracks in all standard formats from stereo and surround sound up to the latest immersive 3D audio formats!. The Audio MIDI interface on my Mac is set to 32-bit float, so I'm fairly certain Resolve is making the switch from 32-bit float signal to 24-bit integer file, which means I may have to switch editors, which I am loath to do, bc Resolve is great. Now I'm using the MixPre as an audio interface & patching the inputs directly into Resolve, but I'm seeing the audio files it records are only 24-bit, which means my audio sometimes clips and is unrecoverable. But I've found that back-and-forth workflow between production and editing to be kludgy and slow, sometimes adding hours or days to production, so I switched it up a bit. Until recently, I'd been recording chapters in 32-bit float on the SD card in my MixPre 3 II, importing them into Resolve, and editing them there. I've been doing all of my editing in Da Vinci Resolve, because it's the editor in which I work fastest. But it ensures I don't accidentally select 16 when my audio is actually 24, or select 24 if my audio is 32bit.įor Windows users I would recommend always using the Quicktime output, then remuxing to MP4 using ffmpeg or Shutter Encoder.I'm a voice actor, specializing in audiobooks. If my audio is lower bit depth (24 or 16), it will make no difference to the output. Therefore if in future I use MP4 with AAC I will always be choosing 32bit as the source option. I assume choosing 24bit when source audio is 32bit would do likewise. This implies that choosing 16bit when the source audio is 24 will involve a conversion down to 16bit which can lose data. The second render was a 100% null there was no difference between 24bit and 32bit renders.īut the 16bit and 24bit test did show some minor differences between those two outputs. I then did two test renders: 16 + 24bit (inverted phase), and 24bit (inverted phase) + 32bit. ![]() I then imported these exports into Reaper and inverted the phase of the 24-bit version. My source audio in Resolve for these exports was 24bit PCM. I tested on macOS, doing three test renders where I rendered out a video with WAV dialogue track to MP4 H264 AAC with the AAC export bit depth set to: I couldn't quickly find docs for the macOS equivalent With ffmpeg you'd certainly do that, and it would use whatever source audio you had to create the AAC.īut as we see from the Windows AAC docs, it seems these OS encoders require PCM input of a fixed bit depth, so there's an unfortunate but necessary conversion step first. So logically you would think one should just pass in the source audio - at its native bit depth. I think it's usually regarded as being 32-bit float? AAC, like MP3, has a variable bit depth that changes from sample to sample. In general, I was rather confused why Windows was limited to 16bit, and why on macOS you have to choose between 16 vs 24 vs 32. Perhaps there's some technical or legal reason for this use of two different encoders, but on the surface it does seem a bit odd. That does raise the question of: why are different encoders used, and couldn't the encoder that's used for Quicktime also be used for MP4? Especially as in both cases it's ffmpeg's LibAV that writes the container. ![]() I guess in the Quicktime case a different encoder must be used. The Microsoft Media Foundation AAC encoder is a Media Foundation Transform that encodes Advanced Audio Coding (AAC) Low Complexity (LC) profile, as defined by ISO/IEC 13818-7 (MPEG-2 Audio Part 7).
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