Technical Recommendations
1. Booking Recommendations
To ensure smooth scheduling and preparation, we recommend booking your recording sessions at least two days in advance and providing complete information about your project during the time of booking.
2. Mixing & Mastering Guidelines
Accepted File Formats
Preferred formats: Uncompressed PCM WAV or AIFF files in stereo/mono.
Compressed or lossy formats (such as MP3, AAC, etc.) are not recommended for mix & master workflows.
Sample Rate & Bit Depth
Minimum accepted standard: 48 kHz / 24-bit.
Higher sample rates are supported and preferred for advanced mastering projects.
Volume Levels
Individual tracks should not exceed -3 dBFS peak level.
If any file peaks above -3 dBFS, please apply equivalent gain reduction to all tracks in the session before exporting.
Note: This adjustment must be applied to each track individually, not through the master fader. Proper headroom ensures clean and distortion-free mixing.
Effect Tracks (Reverb, Delay, etc.)
If specific reverbs, delays, or other effects are intended for the mix, please include both:
The wet (with effects) version, and
A dry (without effects) version of each track.
This allows greater flexibility during the mixing and mastering stages.
Cross-Check Before Submission
Before delivering your multitrack session, ensure every exported audio file is:
Properly audible and not muted or completely silent.
Correctly label each tracks according to the instrument or source.
Free from unintentional mixdowns of other tracks.
We recommend listening to each exported file individually to confirm accuracy.
Reference Mix File
Always include a reference preview mix of your song to help the engineer understand your creative balance and vision.
3. Film Dubbing & Post-Production File Specifications
Frame Sizes
Recommended: HD 720p or Full HD 1080p.
For 2K or higher resolutions, please provide a down-converted copy for faster dub-edit workflows.
Aspect Ratio
16:9 with square pixels is recommended.
Letterboxed formats with inserted black mattes are preferred.
Display Data Burn-Ins
Please include the following visible data on your video file:
Project or film title
Reel numbers (if applicable)
Frame rate (FPS)
SMPTE timecode, visible throughout the timeline
Preferred Codecs
Intra-frame codecs such as:
Apple ProRes (LT / 422)
Avid DNxHD (36 / 100)
These formats ensure faster and more stable dubbing workflows on our systems.
Color Space
Recommended: Rec.709 or P3.
Files with wide gamuts, log formats, or raw camera outputs that are not properly converted may cause issues.
Such files must be previewed and approved by our engineers before the session date to ensure compatibility.
Dub Copy Length
Maximum recommended duration per file: 30 minutes.
Projects longer than 30 minutes should be split into multiple reels, with proper reel numbers labeled.
Include a 1-second censor beep tone and 2 seconds of silence before each reel start to maintain accurate sync during post-processing.
Pilot Tracks
Ensure pilot or guide tracks contain clear, in-sync dialogue recorded on set. Proper sync is essential for accurate dubbing.
Submission Timeline
Please submit all film dub materials at least two days before the scheduled dubbing session.
Early submission allows us to cross-check technical specifications and resolve any potential issues in advance.
4. Additional Assistance
We’re always happy to assist clients who follow these recommendations. For guidance, clarification, or personalized support, please feel free to contact RJ Sound Studio before your session.