Convert WTV to OGG — Free Online Tool
Convert WTV recordings from Windows Media Center into OGG audio files, extracting the audio stream and re-encoding it using the Vorbis codec. This is ideal for stripping TV broadcast recordings down to audio-only content in an open, royalty-free format.
to
FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
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Settings
Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
WTV files are Windows Media Center broadcast recordings that typically contain a video stream (often H.264) alongside one or more audio tracks (AAC or MP3). Since OGG is a purely audio container in this context and does not carry video, the video stream from the WTV file is entirely discarded during conversion. The audio stream is then decoded from its original format — commonly AAC — and re-encoded using the Vorbis codec (libvorbis) at a variable quality level of 4 (roughly equivalent to 128kbps average bitrate). This means the conversion involves full audio transcoding rather than a lossless stream copy, introducing one additional generation of lossy compression.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg tool, the underlying engine that performs all media demuxing, decoding, encoding, and muxing for this conversion, running here via WebAssembly directly in your browser. |
-i input.wtv
|
Specifies the input file — a WTV broadcast recording from Windows Media Center, which FFmpeg demuxes to access its video, audio, and metadata streams. |
-c:a libvorbis
|
Sets the audio encoder to libvorbis, the Xiph.Org Vorbis codec implementation. This re-encodes whatever audio is in the WTV file (typically AAC) into Vorbis format, which is the standard audio codec for OGG containers. |
-q:a 4
|
Sets the Vorbis variable bitrate quality to level 4 on a 0–10 scale, targeting an average bitrate of roughly 128kbps. This is a balanced default appropriate for typical TV broadcast audio including speech and background music. |
output.ogg
|
Defines the output filename and tells FFmpeg to write the result as an OGG container. The .ogg extension causes FFmpeg to mux the Vorbis audio stream into the Xiph OGG format, with no video stream included. |
Common Use Cases
- Extracting the audio from a recorded TV documentary or lecture broadcast to create a portable audio file you can listen to on devices that don't support WTV playback
- Archiving the audio commentary or narration from a recorded sports or news broadcast in an open-format file that doesn't depend on Windows Media Center software to play
- Preparing recorded radio-over-TV content (such as digital radio broadcast via DVB) for distribution or listening on Linux or Android devices where Vorbis/OGG is natively supported
- Stripping a WTV recording to OGG audio to use as a source file in open-source video editors or audio tools like Audacity that readily import Vorbis
- Converting large WTV broadcast recordings to a smaller audio-only format when the video content is irrelevant and storage space needs to be reclaimed
Frequently Asked Questions
No — OGG in this context is an audio-only container, so the video stream from your WTV file is completely dropped during conversion. Only the audio track is decoded and re-encoded as Vorbis. If you need to keep the video, you should convert to a format like MKV or MP4 instead.
By default, FFmpeg selects the first (primary) audio stream from the WTV file. WTV files do support multiple audio tracks from the original broadcast, but this command does not explicitly select a secondary track. If you need a specific track, you can add a stream selector like '-map 0:a:1' to the command to target the second audio stream instead.
Yes, there is quality loss involved. The audio in a WTV file is typically already lossy (usually AAC), and converting it to Vorbis adds a second round of lossy compression. The default quality setting of -q:a 4 targets a good-quality output roughly equivalent to 128kbps VBR, which is acceptable for speech and most broadcast audio, but audiophiles may notice some degradation compared to the original.
Adjust the '-q:a' value, which controls Vorbis variable bitrate quality. The scale runs from 0 (lowest, around 64kbps) to 10 (highest, around 500kbps), with 4 being the default and a solid general-purpose choice. For cleaner speech or music from broadcast recordings, try '-q:a 6' or '-q:a 7'. For example: ffmpeg -i input.wtv -c:a libvorbis -q:a 6 output.ogg
Partially. WTV files embed rich broadcast metadata such as program title, episode description, and channel information. FFmpeg will attempt to map recognized metadata fields to OGG/Vorbis comment tags, but not all WTV-specific metadata fields have direct equivalents in the Vorbis comment format. Common fields like title may transfer, while DVR-specific fields like broadcast time or ratings information may be lost.
Yes. On Linux or macOS, you can use a shell loop: for f in *.wtv; do ffmpeg -i "$f" -c:a libvorbis -q:a 4 "${f%.wtv}.ogg"; done. On Windows Command Prompt, use: for %f in (*.wtv) do ffmpeg -i "%f" -c:a libvorbis -q:a 4 "%~nf.ogg". This processes each WTV file in the folder and creates a matching OGG file with the same base name.
Technical Notes
WTV (Windows Television) is a proprietary Microsoft container introduced in Windows Vista Media Center that wraps MPEG-2, H.264, or VC-1 video with AAC or MP3 audio, along with extensive DVR metadata. OGG, maintained by Xiph.Org, is a fully open container format — it carries no video in this conversion, only the Vorbis audio stream. Because both the source audio (typically AAC) and destination audio (Vorbis) are lossy codecs, transcoding between them results in generation loss; starting from a higher-quality WTV source or raising the -q:a value helps minimize this. OGG Vorbis enjoys broad support on Linux, Android, and in open-source software, but has limited native support on Windows and macOS without third-party codecs, and is not supported in most Apple ecosystem devices. If lossless audio preservation is critical, consider targeting FLAC within the OGG container instead by substituting '-c:a flac' and removing the '-q:a' flag, which would produce a losslessly compressed but significantly larger file. Subtitle streams embedded in WTV files are not transferable to OGG, as the format does not support subtitle tracks.