Question 1

Can I merge Vorbis and Opus files in the same list?

Accepted Answer

Yes. Both are decoded first, then written back out as one Opus stream, so a mixed list is fine as long as your browser can decode each file. The merged file is always Opus, whatever the sources were.

Question 2

Can I add .oga and .opus files, not just .ogg?

Accepted Answer

Yes. All three extensions are accepted, because they are the same Ogg container with different names. Whichever you add, the download is named with a.ogg extension.

Question 3

Does merging re-encode the audio?

Accepted Answer

Yes. Every file is decoded and the result is encoded again as a single Opus stream. Opus is a lossy format, so the merged file is not a bit-for-bit copy of your originals. The change is usually small, but re-merging a file that has already been merged will compound it, so start from your original recordings.

Question 4

What codec and bitrate will the merged file use?

Accepted Answer

The output is Opus audio in an Ogg container, encoded at a target bitrate of 128 kbps. That setting is fixed and does not follow the codec or bitrate of your source files. Opus is efficient enough that 128 kbps is transparent for most material, but a higher output bitrate still cannot restore detail that a low-bitrate source already threw away.

Question 5

Can I merge files with different sample rates or channel counts?

Accepted Answer

Yes. The first file sets the sample rate and number of channels, and every file after it is adjusted to match it. For the most consistent result, put your highest quality file first.

Question 6

Does the order of the files matter?

Accepted Answer

Yes. The files are joined in the order shown, and you can drag them into any order before merging. The first file is also the one that decides the output's sample rate and channel count.

Question 7

Will the merged file keep titles, artists, or cover art?

Accepted Answer

No. The merged file is written fresh and holds the audio only. The Vorbis comments in your source files, which is where OGG keeps the title, artist, album, and cover art, are not carried over. Add them again afterwards in a tag editor if you need them.

Question 8

Does the tool add gaps, crossfades, or normalize the volume?

Accepted Answer

No. Each file starts where the previous one ended. The tool does not insert silence, fade between files, or match their loudness, so differences in volume and anything already present at the edges of a recording will remain.

Question 9

Why might merging not work in my browser?

Accepted Answer

Merging needs your browser to decode the files you added and to encode Opus audio. Opus encoding in particular is handled by the browser itself here, with no fallback, so an older browser can stop the merge before it starts. A recent version of Chrome, Edge, Firefox, or Safari will work. If a merge fails on one browser, it is worth trying another before assuming the files are at fault.

Question 10

What can I use the OGG merger for?

Accepted Answer

You can join separate voice recordings into one file, assemble game or app sound clips, combine the parts of a longer recording that was captured in sections, or bundle a set of clips so they are easier to share and play back.

Merge OGG files

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