XVID to SPH Converter

Online tool to convert XVID into SPH format

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Seamless Conversion

Move from XVID to SPH without quality compromise. The converter handles format differences automatically.

Secure Processing

All uploads are handled over encrypted connections. Source files are deleted immediately, output files within 24 hours.

No Local Resources Needed

Conversion is handled by our cloud infrastructure. Your device is free while XVID transforms into SPH.

How to convert XVID to SPH

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose sph or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your sph file right afterwards

About formats

Xvid is an open-source video codec that implements the MPEG-4 Part 2 Advanced Simple Profile standard, developed and maintained by volunteer programmers under the GNU GPL license. The project originated in 2001 as a fork of the OpenDivX codebase after DivX, Inc. closed the source of their codec, and the original name is DivX spelled backwards as a nod to this history. Xvid achieved widespread adoption in the early-to-mid 2000s as a free alternative to the commercial DivX codec, offering comparable or sometimes superior compression quality without any licensing costs. The codec excels at compressing full-length video into remarkably small files while preserving good visual quality, using techniques such as adaptive quantization, quarter-pixel motion compensation, global and local motion estimation, and custom quantization matrices. Xvid-encoded video is typically stored in AVI containers, though it can also be wrapped in MKV, MP4, and other formats. The codec gained certification for playback on many standalone DVD players and media devices that supported DivX playback, since both codecs share the underlying MPEG-4 ASP standard. Cross-platform availability covering Windows, Linux, macOS, and other operating systems, combined with a completely free and open-source nature, made Xvid a cornerstone of community-driven video encoding. While H.264 and newer codecs have largely replaced MPEG-4 ASP for new encoding, Xvid remains in use for compatibility with older hardware and in legacy media collections.
Developer: Xvid Team
Initial release: 2001
SPH is the file extension for audio stored in the NIST SPHERE (SPeech HEader REsources) format, a standard created by the U.S. National Institute of Standards and Technology around 1990. Built for speech research, SPH files carry a 1024-byte ASCII header packed with metadata — database identifiers, channel counts, sample rates, byte ordering, and compression type — making every recording self-describing. The underlying audio is typically 16-bit linear PCM sampled at 16 kHz, though other configurations are permitted. Researchers at NIST, DARPA, and universities worldwide rely on SPH for distributing speech corpora such as TIMIT, Switchboard, and the LDC collections that underpin modern automatic speech recognition systems. A key advantage is that the human-readable header lets scripts parse recording metadata without binary decoding. The format's strict standardization also eliminates ambiguity when sharing datasets across institutions and platforms. Because SPH files store uncompressed PCM, they preserve full audio fidelity — critical when training acoustic models where even small artifacts can skew results.
Initial release: 1990

Frequently Asked Questions

Why convert XVID to SPH?

Converting XVID to SPH solves outdated compression and declining player support. SPH provides linguistic research data support for a better experience overall.

How do I open a SPH file?

Use NIST/SPHERE tools, HTK toolkit, or SoX to open SPH. These tools recognize the format out of the box on most systems.

Is any software installation required?

No. The entire XVID to SPH conversion runs in your browser via convertio.tools. Nothing to download or install on your machine.

Can I convert multiple XVID to SPH at once?

Absolutely. Upload several XVID files and convert them all to SPH in one batch — each processes independently.

Will the audio quality be preserved?

Audio quality depends on the bitrate you choose. Higher bitrates retain more detail from the original XVID soundtrack.

Does converting XVID to SPH keep only the audio?

Yes — when you convert a video format to SPH, the converter extracts the audio track and discards the video stream entirely.