Fission Release Notes

Full Support for MacOS 15 (Sequoia)
Fission now offers full support for MacOS 15 (Sequoia), with no known incompatibilities.

Preliminary Support for MacOS 15 (Sequoia) Betas
Fission will no longer warn every launch when run on MacOS 15 (Sequoia). There are no known issues on Sequoia at present, but do note that these betas remain in flux. To avoid problems, we always encourage users to stick with Apple’s official (non-beta) OS releases.

If you’re running the latest version of Fission when you check for an update, the resulting information screen now provides a helpful “View Release Notes” button.

Creation of Chapterized MP3s has been improved for wider compatibility with assorted podcast platforms.

Full Support for MacOS 14 (Sonoma)
Fission now has full compatibility with MacOS 14 (Sonoma), with no known issues.

Initial Support for MacOS 14 (Sonoma)
Fission now has initial compatibility with the forthcoming MacOS 14 (Sonoma), with no known issues.

New “Permissions” Window
The “Fission” menu now includes a new “Permissions” window, to easily enable the “Full Disk Access” permissions. These permissions can enhance performance when working with external drives.

Fission’s bundled version of FLAC has been updated to 1.4.2.

Full MacOS 13 (Ventura) Compatibility
Fission now has full compatibility with MacOS 13 (Ventura), with no known issues.

Initial MacOS 13 (Ventura) Compatibility
Fission now has initial compatibility with MacOS 13 (Ventura), with no known issues.

The load time of large MP3s has been improved.

Fission now supports WAV files up to 4 GB in size.

Initial Support for MacOS 12 (Monterey)
Fission now has initial compatibility with the forthcoming MacOS 12 (Monterey).

Enhancements to Fission's Built-In Updating
Fission's updating code has been overhauled and improved. It is now based on Sparkle 1.26.0, with several customizations.

    • To avoid possible issues, Fission will no longer offer to “Install on Quit”. Automatic background updating has been removed as well, placing the user in charge of all updates.

    • The update interface has been improved, with several design and text enhancements.

    • Finally, the new “Skip for Now” button allows you to delay updating if desired.

As always, we strongly recommend leaving the “Automatically check for updates” option enabled.

Fission's manual is now provided online, rather than being built in to the application. The application's “Help” menu has also been modified and streamlined, to get you assistance as quickly as possible.

Many debugging improvements have been made:

    • Available logs have been cleaned up.

    • Active logs are now listed in the logging files.

    • Machine details are no longer needlessly included in copied errors.

    • Logs are now activated with simple checkboxes.

    • When a log is activated, it will also collect recent crash logs, to better understand any issues.

    • A “Quit and Relaunch for Debugging” option has been added, accessed by pressing option in the Help menu.

    • Command-line debugging options have been added.

Fission's Start window has been made more intelligent. The Cmd-0 shortcut will now open the window if its closed, close it if it's open and in the foreground, or pull it forward if it's already open but in the background.

Support for some WAV codecs (pcm_s24le) has been improved.

MacOS 10.15 (Catalina) Support
Fission now has preliminary compatibility with MacOS 10.15 (Catalina).

Loading times have been improved for several audio formats.

Fission now supports very long AAC files.

Fission can now better handle broken FLAC files.

Improved bitrate calculations now enable improved joining of some AAC compressed files, for better audio quality.

Waveform display has been sped up, and its memory footprint has been reduced.

Fission can now handle damaged or fragmented MP4 files better than ever.

Fission's MP3 encoder (LAME) has been updated to version 3.100 and its FLAC encoder has been updated to version 1.3.2.

Myriad improvements to tags have been made. JPEGs are no longer incorrectly converted to PNG, and Fission now offers better handling Vorbis comments and QuickTime files with tags.

Fission now has support for 32-bit AIFF and WAV files, as well as 24-bit and 32-bit CAFF files.

Fission now fully supports tabs on MacOS 10.12 (Sierra). Previous versions could crash when attempting to make new tabs, so be sure to update!

We've made optimizations throughout the app to make this the snappiest Fission yet. Waveform generation is now 20% faster, and AAC saving has been sped up as well.

Chapterized AAC and MP3 files now use the Album tag as the Title for the file.

Fission will automatically set a default title based on any file's name, and set Artwork from a video file's preview frame.

Save operations can now be cancelled if necessary.

This version improves file support for several different file types. First up, loading of AAC and Apple Lossless is much faster.

In addition, support for Apple Lossless files has been improved, with support for the rare 20-bit ALAC format.

Tag support for FLAC files has also been improved.

Rounding out our improved file support, chapterized AAC files are now better supported as well.

Fission is now fully certified for use with Mac OS X 10.11 (El Capitan).

Other minor fixes and improvements have been made.

Fission now requires Mac OS X 10.9 (Mavericks) or higher. If you're still on 10.8 (or lower), be sure to see our Legacy Software page.

A crash was introduced in version 2.2.3, which could occur when importing a file. We've fixed this problem, so import away!

Speaking of importing, the engine for it has been fully updated to ffmpeg 2.6.2. Nifty!

Previously, certain FLAC files could cause Fission to crash. We did not like this, so we decided to squash that bug.

An issue where some MP4 files wouldn't open correctly has also been rectified.

Other minor fixes and improvements have been made.

A minor problem with ALAC files has been corrected.

Some issues with @2x Retina art have been corrected.

A slew of other minor fixes and improvements have been made.

The importation engine was partially updated to ffmpeg 2.6.2.

An emergency update, necessitated by immediate changes Apple has made to their Gatekeeper system, restores compatibility on Mac OS X 10.9.5 and higher.

A rare crash caused by closing a window has been fixed.

An Apple Lossless transcoding regression, triggered by files with 4096 packet size, has been fixed.

A hidden preference to disable the limit on Smart Splits is now available.

Logging in the Saving pipeline is now improved, and more detailed optional error reporting.

Fission is now more forgiving of slightly malformed FLAC files, enabling them to be imported without a problem.

Several other minor fixes and improvements have been made.

An incompatibility with ALAC files generated by non-Apple applications like doubleTwist's "AirPlay Recorder" has been addressed.

Fission's Start Window is now prevented from showing if Fission was launched by opening a file.

We now have consistent bitrate options across all Rogue Amoeba apps, because consistencyness is next to godliness.

The way Fission saves ringtones has been updated for better compatibility, using the import folder. Mac App Store users should take note to delete duplicate files if they occur (this will depend on your iTunes import preferences).

The presentation of errors following a batch conversion has been improved.

Fission can now open the GSM, MS IMA, QT IMA, and CAF formats, as well as FLAC and ALAC files with non-standard containers or non-standard sample sizes.

Unnecessary gaps at the beginning of files when exporting FLAC or ALAC files are no more.

Several other minor fixes and improvements have been made.

Fission now offers full support for developer preview versions of Mac OS X 10.9 (Mavericks).

Fission is now a 64-bit application. That is literally twice as many bits as before. You probably won't notice much difference just yet, but this will enable performance gains in the future.

The QuickTime engine for opening file has been replaced with our own internal libav. Some extremely rare file formats may no longer be supported. Get in touch if you a format you use is missing.

Fission has an entirely new saving pipeline. Hopefully, you won't even notice, it will simply work. Oh, saving a ringtone from the Mac App Store version of Fission works a bit better, that's potentially noticeable.

Dragging a song from iTunes into the Mac App Store version of Fission should now work the first time. Previously, it only worked after two tries. Yes, really.

The License window has been overhauled, with HTML. Neat!

Chapters which contain multiple images now load images more logically (grabbing the first image in the chapter).

The app now has a hidden "Check for News" option, accessible by pressing option while in the Fission menu.

Fission's debugging window has been slimmed down.

Fission's now better handles excessively large AAC and Apple Lossless files which violate their respective specifications.

Many other small improvements have been made. They're not worth spelling out, but they're in there, and they're nice.

Fission now requires Mac OS X 10.7 or higher. If you're still on 10.6 (or lower), be sure to see our Legacy Software page.

The name of the game is bug fixes. Version 2.1.3 removes almost two dozen incidences of stupidity, dumbness, and boneheadedness.

The Batch Converter has been updated to properly handle all Windows Media files, as well as ALAC-encoded CAF files, and more.

A problem where the App Store version of Fission could crash when inserting silence has been corrected.

Fission now handles.m4a_partial files, to recover AAC and ALAC recordings which have been corrupted by an unexpected termination.

Several additional VoiceOver improvements have been made, with labels on previously unlabeled controls. We're always working to improve this.

The Channels selector now properly appears for mono files (if Stereo is selected, the mono channel is simply cloned).

Clip tabs now always show the clip name.

An issue where some FLAC files wouldn't properly open has been corrected.

Fission's looping now properly updates when you change the selection.

Fission's time wells now properly update when undoing.

Fission Progress Indicator now properly remembers its position.

Fission now retains the Inspector state between launches and file opens.

The Batch Converter's Convert button now properly deactivates after a conversion finishes.

Keyboard shortcuts now loop through Inspector tabs.

Smart Split's "Insert Splits" button now properly accepts Return.

Artwork wells now illuminate when an image is hovered over them.

Removing or cropping a whole file no longer gives a dumb error.

Fission now better illustrates when a file's audio is clipping. Thanks, Kirk!

A drawing issue when moving the playhead backwards has been corrected.

Improvements have been made to prevent already-rare deadlocks and crashes in PTWorkerThread.

Fission now better handles UTF-8 in ID3 tags.

Simply moving the playhead no longer dirties a file.

Fission had a problem with overusing the CPU when all windows were closed. That problem has been eradicated.

A problem some users saw with Exporting and Transcoding acting unresponsive, even as it worked, should now be gone. Fission is sorry if it seemed to be ignoring you while it worked.

The Start Window now remembers its state between files and launches. If you close it, it'll stay pretty well closed, and not annoy you so much. But please, don't you forget about it.

Fission now better remembers previously used settings for saving and exporting. Amnesia be gone!

Progress bars should now appear more reliably when exporting audio.

An issue where the Mac App Store version of Fission would fail to save to a previously-specified location is now fixed.

Several small issues related to re-encoding of audio have been corrected, preventing unnecessary re-encoding.

Fission is now better a reading in chapterized AAC files. It was already pretty great, to be sure, but now it's even better.

Several VoiceOver improvements have been made, with labels on previously unlabeled controls. We've still got more work to do, so watch for further updates, VoiceOver users!

A conflict with Many Tricks' window manager Moom, which caused the selection of split points to fail, has been handled.

Assorted rare crashes should now be even more rare, so rare that you might suspect they're gone entirely, which they are!

There are probably other improvements which we've forgotten. The best way to be sure you've got them is, of course, to update.

Fission's Batch Converter now accepts folders (containing audio files), as well as individual files.

The Save panel now correctly remembers the last location to which files were saved.

An issue with chapterized AACs and very large image files has been corrected.

Fission now has a hidden preference, accessible via the Debugging window, to check for and prevent rare Normalization clipping.

Fission now features an HTML-based About box, for better Retina display.

Several other small bugs have been corrected.

An issue where attempting to Save (with Cmd-S or by choosing Save) would cause an error for users of the Mac App Store version has been corrected.

A problem caused by Mac OS X 10.7.4 which led to Apple Lossless files not displaying properly has been corrected.

Fission now accepts new YELO- license keys.

Several other minor changes have been made.

A crash which could occur with large files has fixed.

Fission now features a Developer News window, used for communicating urgent messages.

A graphical bug where the maximum value would not be drawn below zero, and the minimum values would not be drawn above zero, has been fixed.

Several small fixes to ID3 tag saving have been made.

The horizontal scrollbar now works properly on Mac OS X 10.7.

Price reverted to $32.

An issue with the Revert command malfunctioning has been corrected.

CPU usage during playback has been reduced.

24-bit mono files are now properly supported.

The LAME MP3 engine, used for pasting/dropping files into an MP3 document, has been updated to 3.98.4

A long hang which could occur when closing large documents in certain circumstances has been fixed.

A crash caused by buggy QuickTime components failing to provide a file extension has been fixed.

A glitch occurring when fading to the end of a file has been corrected.

A bug caused by certain characters in the name of an iPhone ringtone has been fixed.

A bug where the waveform was not show correctly at certain zoom levels has been fixed.

A problem with fades placed at the very end of MP3 and AAC files, introduced in version 1.6.7, has been corrected.

Fission now requires Mac OS X 10.5 or later.

An extremely rare crash that could occur while pausing playback has been fixed.

A bug that could lead to audio corruption when applying fades in stereo AIFF, WAV, and CAF files has been corrected

A problem which would cause faded sections to not respect gain changes or normalizations in AIFF, WAV, and CAF files has been fixed.

A serious crashing bug that could occur when a fade was set has been fixed.

A Split at Playhead toolbar button is now included for easier splitting.

Files can now be dragged to Fission's Dock icon right from iTunes.

Fades are smoother, as they're applied directly to the waveform data in Apple Lossless, AIFF, WAV, and CAF files.

Fission now has full compatibility with Mac OS X 10.6 (Snow Leopard).

A bug where Fission would run a redundant spotlight query for metadata, resulting in decreased performance at startup, has been fixed.

NUL bytes are now removed from filenames when saving, fixing a bug which would truncate filenames of files with badly-formed titles.

Improved window flushing should reduce or fully prevent flicker in certain circumstances.

If Fission is hidden at startup, the Welcome Window is no longer improperly shown.

A bug where QuickTime would refuse to export to certain filenames containing colons has been worked around.

A bug with saving partial Apple Lossless frames has been fixed.

A bug where Fission would not allow aborting the save of a very long AAC file has been removed.

Fission no longer offers to install Smart Crash Reports.

When decoding errors from corrupt files occur, silence is now produced instead of garbage data.

A bug where custom registration window errors would display incorrectly has been fixed.

Fission now checks for updates weekly, instead of every 15 days.

Software update check now sends the processor architecture to the server.

Looped playback is now properly gapless.

A bug with the new scrubbing indicator and waveform scrolling has been fixed.

Parsing of WAV files has been improved.

Runaway memory usage when using Smart Split or applying a cue sheet to very large files has been corrected.

CAF files can now be opened by dragging them to the Fission application icon.

The Shift-arrow key combination now behaves correctly in all cases.

A crash when opening a cue sheet and then canceling the open file sheet asking to locate the audio file has been fixed.

Registration information is now written to disk immediately when entered.

All preferences are now written to disk immediately after being changed.

The application name and version are now shown in the Registration window.

Several small bug fixes and memory leak fixes are included.

Normalization now works correctly on files with corrupt packets.

Fixed a rare crash that could occur after intensive editing

Fixed a drawing-related crash on Tiger when using the I and O keys to create a selection

10.5 support

Reduced CPU usage during playback

Fixed a case where ID3 tags could be read incorrectly

Drag and drop saves no longer overwrite existing files

Gain button no longer appears when no selection exists

Fixed memory leak in autocomplete

Fixed certain Inspector fields not updating their value immediately

Open panel now allows selection of any file readable by QuickTime

Eliminated blip occurring after a fade at the very end of the file

Smart Split no longer gets slow or crashes when performing a large number of splits

Now shows the correct inspector for WAV files

Fixed some enabled but unconnected controls in the inspector for QuickTime imports

Minor bug fixes and GUI enhancements

Moved autocomplete query to separate thread to eliminate slowdowns

Fixed audio glitch when cutting the end of an MP3 or AAC with automatic fades turned on

Fixed shift-click to extend the selection

Fixed nonfunctional gain slider in certain circumstances

Fixed I and O keyboard shortcuts

Save panel now grays out QuickTime controls when not selected

Adds a '1' to the end of the first clip when saving multiple clips with the same name

Cue Sheets now save Album Title where appropriate

Improved AAC recording compatibility with iPod Shuffle 2G

Activated/Fixed Trash warning

Added a hidden preference to disable the smart split limiter

Now accepts unknown but QuickTime-readable files