Development of mAVR H264 series
Professional miniature Audio and Video Recorder mAVR H.264x4.
Distinctive features compared to mAVR H264S:
• bitrate (recording speed of video data onto memory card) enhanced by 3,5 times which provides improved video recording quality;
• opportunity to use four SD cards: each up to 32 Gb, which means that maximum recording capacity is up to 128 Gb, that is recording for more, than 60 hours;
• battery life enhanced by 4 times (compared to mAVR H264).
Control and indication of operating modes are the same as in mAVR H264S.
Video Recorder MAVR-H264x4 is intended for professional recording of video and audio data either from an external source or from built-in video camera and microphone onto SD or SDHC flash memory cards at the capacity up to 32 Gb. The recorder provides the opportunity to insert up to 4 memory cards for alternate recording.
Specifications:
- Video recording either from an external source or from the built-in recorder video camera (AVC format, H.264) providing resolution 640x480 for video camera or 720x576 (for an external source)
- Disposition of text onto video signal (date, time, GPS data, text line) – up to 2 lines with 24 symbols each (depending on the resolution selected)
- Option to set video signal parameters (brightness, contrast, saturation, color)
- Built-in clock and calendar with an option to correct their accuracy
- Opportunity to set time and date according to GPS signal
- Starting the recording by switch, timer, control input signal, motion detector or VAS (Voice Activating System) actuation
- Opportunity for circular recording onto memory card (one or several)
- Prehistory recording
- Video signal scaling (image compression) and cropping up to 96x96
- Adjustable video signal filtering
- Independent setting of bitrate for audio and video stream
- Adjustable frames per second for video stream
- Elimination of flickering caused by day electric lamps etc (at the frequency 50 and 60 Hz)
- Power supply either from an external source or by built-in Li-ion rechargeable battery. When powered from an external source rechargeable battery is charging
- The recorder can provide power supply for an external power consumer (for example video camera) with output voltage option (5 or 12 V)
- Audio recording format: mono or stereo
- Parameters setting, using menu or with the help of manager program
- Opportunity to upgrade internal software
Technical characteristics for mAVR-Í.264S
Video Recording parameters:
- Resolution of built-in video camera 640ő480
- Video input resolution 720*480 (NTSC)
- 720*576 (PAL, SECAM)
- Format size of video stream 160x120, 320x240, 640x480 (built-in video camera);
- 180x120, 360x240, 720x480 (NTSC);
- 180x144, 360x288, 720x576 (PAL, SECAM)
- Frames per second: 1, 2, 5, 10, 12, 20, 25, 30
- Video compression standard: AVC (h.264)
- Bitrate, Kb/s 768, 1024, 1536, 2048, 2560, 3072, 3584
- Video input resistance, Ohm 75
- Supportable video standards: NTSC (M, 4.43)
- PAL (B, G, H, I, M, N)
- SECAM
- Viewing angle of built-in video camera, degrees: 64
- Dynamic range of built-in video camera, dB: -68
Audio recording parameters:
- Sample rate, Hz: 44100
- Resolution, bit: 16
- Audio compression standard: AAC
- Audio bitrate, Kb/s: 32, 64, 96, 128
- Amplification range, dB: 60
- Dynamic range, dB: 92
- Frequency range, dB: 80-20000
- Resistance for electret microphones, KOhm: 3.0
- Voltage of electret microphones, V: 2.5
- Storage medium parameters:
- Memory cards in use: 1-4
- SD card capacity, Gb: 2
- SDHC card capacity, Gb: 4-32
- File system: FAT 32
- Power system parameters:
- Rechargeable battery: Li-ION (2200 mAh)
- Battery life in record mode, hours: 8
- Battery life in stand-by mode, months: 12
- Charging time fr om an external source, hours: 5
- External source voltage, V: 4.5-5.5
- External source current, A: 4.5-5.5
- External power source voltage, V: 1.7
- External video camera voltage, V: 5.12
- External video camera current, mA: 150
Please note! To attain better quality recording, follow the instruction from Manual to program RecManager in Product files
here.
Software
Manual to 
