Convert H261 to AAC

H261 to AAC Converter converts H261 to AAC. The converter is an ALL-IN-ONE audio converter that supports more than 90 audio and video file formats.

H261 to AAC Converter supports batch conversion and is full compatible with Vista and Windows 7.

1. Free Download H261 to AAC Converter
2. Install the software by instructions
3. Launch H261 to AAC Converter
4. Choose H261 Files


Click "Add Files" button to choose H261 files and add them to conversion list.


Choose one or more H261 files you want to convert and then click Open.


5. Choose "to AAC"




6. Convert H261 to AAC


Click "Convert" to convert H261 files to AAC format.


The software is converting H261 files to AAC format.


7. Play and Browse AAC File


When conversion completes, you could right-click converted file and choose "Play Destination" to play the AAC file; or choose "Browse Destination Folder" to open Windows Explorer to browse the outputted AAC file.


8. Done

Free Download H261 to AAC Converter

H261 to AAC Converter is 100% clean and safe to install. It's certified by major download sites.

What is H261?
H.261 is a 1990 ITU-T video coding standard, ratified in November 1988. Originally designed for transmission over ISDN lines on which data rates are multiples of 64 kbit/s. It is one member of the H.26x family of video coding standards in the domain of the ITU-T Video Coding Experts Group (VCEG). The coding algorithm was designed to be able to operate at video bit rates between 40 kbit/s and 2 Mbit/s. The standard supports two video frame sizes: CIF (352x288 luma with 176x144 chroma) and QCIF (176x144 with 88x72 chroma) using a 4:2:0 sampling scheme. It also has a backward-compatible trick for sending still picture graphics with 704x576 luma resolution and 352x288 chroma resolution (which was added in a later revision in 1993).

The H.261 standard actually only specifies how to decode the video. Encoder designers were left free to design their own encoding algorithms, as long as their output was constrained properly to allow it to be decoded by any decoder made according to the standard. Encoders are also left free to perform any pre-processing they want to their input video, and decoders are allowed to perform any post-processing they want to their decoded video prior to display. One effective post-processing technique that became a key element of the best H.261-based systems is called deblocking filtering. This reduces the appearance of block-shaped artifacts caused by the block-based motion compensation and spatial transform parts of the design. Indeed, blocking artifacts are probably a familiar phenomenon to almost everyone who has watched digital video. Deblocking filtering has since become an integral part of the most recent standard, H.264 (although even when using H.264, additional post-processing is still allowed and can enhance visual quality if performed well).

What is AAC?
Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at many bit rates.

AAC has been standardized by ISO and IEC, as part of the MPEG-2 & MPEG-4 specifications. The MPEG-2 standard contains several audio coding methods, including the MP3 coding scheme. AAC is able to include 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 15 low frequency enhancement (LFE, limited to 120 Hz) channels and up to 15 data streams. AAC is able to achieve indistinguishable audio quality at data rates of 320 kbit/s (64kbit/s/channel) for five channels. The quality is close to CD also at 96 kbit/s (48kbit/s/channel) for stereo.

AAC's best known use is as the default audio format of Apple's iPhone, iPod, iTunes, and the format used for all iTunes Store audio (with extensions for proprietary digital rights management).

AAC is also the standard audio format for Sony's PlayStation 3 and is supported by Sony's Playstation Portable, latest generation of Sony Walkman, Sony Ericsson Walkman Phone, Nintendo's Wii (with the Photo Channel 1.1 update installed for Wii consoles purchased before late 2007) and the MPEG-4 video standard. HE-AAC is part of digital radio standards like DAB+ and Digital Radio Mondiale.

Convert H261 to AAC Related Topics: VOC to AAC, M4B to AAC, 3GPP to AAC, 3GP to AAC, AAC to WAV, MTS to AAC, MLP to AAC, ADX to AAC, W64 to AAC, M4A to AAC, MPE to AAC, WAVE64 to AAC, MPGA to AAC, M1V to AAC, TTA to AAC, VOB to AAC, ULAW to AAC, DVD to AAC, VFW to AAC, S3M to AAC, MP4 to AAC, VID to AAC, FLAC to AAC, PSX to AAC, AMR to AAC, DIVX to AAC, F4B to AAC, OGM to AAC, MO3 to AAC, MP1 to AAC, FLV to AAC, M2A to AAC, 4XM to AAC, WAV to AAC, UMX to AAC, XA to AAC, DTS to AAC, VQF to AAC, MKV to AAC, M4R to AAC