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25 Jan 2021
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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 22 May 2023 17:27 #125565

  • joema
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Timeline export failures will happen on FCP 10.6.5 (and likely earlier versions), starting with Ventura 13.4 on Apple Silicon, if the timeline export contains any Sony 100 fps or 120 fps 10-bit 4:2:2 XAVC-S (H264) clips. It happens regardless of timeline frame rate or export codec. Whether the 100/120 fps material is retimed makes no difference.

Failure modes include: high CPU slow export, or apparent success but no output file appears on disk, or output file is unreadable, or output file is readable but shows damaged frames. It does not happen on Intel. Also, it does not occur on Apple Silicon with 100/120 fps 10-bit 4:2:2 XAVC-HS (HEVC) clips or with 100/120 fps 8-bit 4:2:2 XAVC-S clips.

I have not tested H264 10-bit 4:2:2 100/120 fps from other camera codecs such as Canon, Fuji or Panasonic.

The exact failure mode can vary, but the failure itself is 100% consistent. Even a single clip of the XAVC-S 100/120 fps material in a timeline of other codecs or in a pure ProRes 422 timeline will cause export failure.

Existing properly-functioning FCP projects created on prior versions of MacOS will begin having this problem if the Apple Silicon machine is upgraded to Ventura 13.4. The problem cause is evidently MacOS not FCP.

The clips show in the Event Browser and timeline as black, audio plays but no video. However, it is not merely a playback problem within FCP; the export will fail or produce a damaged file.

Resolve Studio 18.1.4 has a similar problem on the same XAVC-S material starting with Ventura 13.4. Like FCP, it works OK on Intel. Premiere Pro 23.4.0 works OK with this material on Ventura 13.4 Apple Silicon.

Apple Pro Video Formats were unchanged for Ventura 13.4, still on version 2.2.4. Unknown if that is related.

Ventura 13.4 machines tested: M1 Ultra Mac Studio, M2 Pro Mac Mini
Ventura 13.3.1(a) machines tested: M1 Max MacBook Pro 16, 2017 iMac 27

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Last edit: by joema.

Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 08:13 #125643

Same problem over here, how to fix this?

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 12:19 #125646

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You can *avoid* it for new material by recording in 100/120 fps 10-bit 4:2:2 XAVC-HS (HEVC). For 100/120 fps 10-bit 4:2:2 XAVC-S (H264) material already recorded, the only solution is use an Intel Mac, revert the Apple Silicon Mac to 13.3.1(a), or transcode the existing XAVC-S clips to HEVC using Handbrake.

Note this is not an FCP bug -- it also happens on Resolve. It is an issue with MacOS 13.4 on Apple Silicon.

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 13:17 #125647

  • cseeman
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Has anyone tested Optimizing 100/120fps XAVC-S 10 Bit 422 to ProRes as a solution?

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Last edit: by cseeman.

Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 15:10 #125650

  • joema
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The core problem is a decoding failure isolated to MacOS 13.4 on Sony 100 fps and 120 fps 10-bit 4:2:2 XAVC-S material on Apple Silicon. Because the decode side fails, it cannot transcode those to ProRes or anything else.

The options are externally transcode those clips using Handbrake before import to FCP, or (for new material) set the camera to record in XAVC-HS (HEVC) instead of XAVC-S (H264), or downgrade to MacOS 13.3.1(a), or use an Intel Mac which does not have this problem. It is not just FCP, Resolve also has the problem on Ventura 13.4 on Apple Silicon. For some reason it does not affect Premiere.

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 15:56 #125653

  • DaveM
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...
The options are externally transcode those clips using Handbrake before import to FCP,
...

Does it affect EditReady, as well?

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 26 May 2023 17:21 #125654

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EditReady will transcode it but it cannot do 10-bit 4:2:2 H264 or HEVC output, only 8-bit 4:2:0. The ProRes outputs maintain the 10-bit 4:2:2 XAVC-HS input bit depth and chroma subsampling.

Handbrake can do 10-bit 4:2:2 HEVC output, either using x265 software encoding or VideoToolbox accelerated encoding.

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 01 Jun 2023 23:56 #125734

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In further testing, the problem is not isolated to Sony 100/120 fps XAVC-S 10-bit 4:2:2 material. It also happens with DJI 5120 x 2700 10-bit 4:2:0 H264, 23.98 fps or 29.97 fps. I'll do more testing tomorrow.

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Export fail: 100/120 fps XAVC-S 10-bit 4:2:2 on Ventura 13.4 on Apple Silicon 10 Jun 2023 06:35 #125857

I have been on with Apple Pro Service support and they have confirmed that the issue is know to Apple and that it is Ventura that is the issue. They suggested the Handbrake/VLC workaround as well.

For me, I will change to another Codec for new projects and they believe it will be resolved in a future update but could not confirm when.

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