Avid Editing Application
ReadMe for Media Composer® v2020.12.3

Revision History
DateDescription

September 16, 2021

Added MCCET-3618 to Fixed in Media Composer v2020.12.3.

June 24, 2021

Added Media Indexer requirement to fixed bug MCCET-4146.

June 18, 2021

Added macOS support in Changed in Media Composer v2020.12.3 andadded fixes to Fixed in Media Composer v2020.12.3.

Changed in Media Composer v2020.12.3•Media Composer v2020.12.2 did not support Media Composer | Distributed Processing.
This has been fixed in v2020.12.3.

•This release adds support for macOS v11.4.

Fixed in Media Composer v2020.12.3
The following have been fixed:➤

Bug Number: MCCET-3618. (Artist Mix) You could not keep the two channels at the samelevel when ganging audio tracks.

➤

Bug Number: MCCET-3958. The user listed in the Interplay Transfer Status was the user
entered in Media Composer settings, instead of the user logged in to perform the transfer.

➤

Bug Number: MCCET-4032. (Production Management) If you deleted a clip in Access, themedia would not display as offline, instead you would receive a “Disk File Not Found” error.

Fixed in Media Composer v2020.12.3➤

Bug Number: MCCET-4100. Media Creation Settings defaulted to H.264 800kbps proxy in1080p/24 projects.

➤Bug Number: MCCET-4067. You received an “unsupported resolution” error when trying tolink DNxHD 175X media that was encoded in Media Composer v2018.12.x.

➤

Bug Number: MCCET-3629. You might have received “Exception:'AComposition::ConvertFromAAF - unable to convert media descriptor” errors when trying towork with Blackmagic Hyperdeck recorded files copied to the Avid MediaFiles folder.

➤Bug Number: MCCET-4071. Target Mask not working properly in Avid Titler.

➤

Bug Number: MCCET-3847, MCCET-4155. Default Media Creation settings for new projects
and when switching to a different project format might have been incorrect.

➤

Bug Number: MCCET-4079. Site settings for Media Creation were not working for somecodecs.

➤

Bug Number: MCCET-3510. Even after changing the Media Creation setting, video resolution
reverted to default in 1080p50 projects.

➤

Bug Number: MCCET-3705. (Production Management) Video track name changes might nothave saved properly during check in/check out.

➤

Bug Number: MCCET-4070. H.264 proxy media may have been scrambled.

➤Bug Number: MCCET-4065. In some instances, the clip color changed on transcoded clipswith alpha.

➤

Bug Number: MCCET-4114. Dragging a saved Audio Track Effect from a bin to the Audio
Mixer [+] did not apply the effect.

➤

Bug Number: MCCET-4061. Importing some sequences resulted in “vcAvgFrameSize
encountered a codec manager” errors.

➤Bug Number: MCCET-3850. You might have received a “Video compression not recognized”
error when opening a bin containing DNxHD 220x created in Media Composer v2020.x.

➤Bug Number: MCCET-4053. When working with the List Tool, you might have received an“Assertion” error when previewing sequences with mixed frame rate or group clips.

➤Bug Number: MCCET-4124. The application would crash to a Breakpad window when trying
to import a PSD file.
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Fixed in Media Composer v2020.12.3➤Bug Number: MCCET-4055. The Paint effect window did not display properly.

➤Bug Number: MCCET-4073. The small space at the left of the bin where you could right-click
to select bin options was missing.

➤Bug Number: MCCET-4075. You could not lasso multiple bins in a project.

➤Bug Number: MCCET-4101. Media Composer might have crashed when transcoding a GoProclip.

➤

Bug Number: MCCET-3952. The audio and video for some MP4 media was not in sync.

➤

Bug Number: MCCET-3832. You might have received “assertion failed” or “fatal exception”
errors when rendering or scrubbing media that was edited in Audio EQ tool.

➤

Bug Number: MCCET-4146. (Production Management) After performing an initial checkout ofsome clips, some audio was offline. This fix requires Media Indexer v2020.4.3 or higher clientand server.

➤

Bug Number: MCCET-4131. Media Composer crashed when playing a corrupted file fromFastServe Ingest.

➤

Bug Number: MCCET-4136. Timeline Frame View did not show the correct frame withstacked clips.

➤

Bug Number: MCCET-4148. Double-clicking the Take did not load a subclip into the Source
Monitor from the slate.

➤

Bug Number: MCCET-4080. The Tool Palette window did not retain its size.

➤

Bug Number: MCCET-3842. Desktop Play Delay resulted in an“ADM_PLAY_NOT_ARMED” error when hitting play with NDI enabled.

➤Bug Number: MCCET-4059. You might have received a “compression not recognized” error
when importing some media into Media Composer.

➤Bug Number: MCCET-4151. (Production Management) Checking out a sequence that
contained a clip that was referenced in many sequences might have been slow.

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Avid Media Composer ReadMe • Created 9/16/21

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