Encoding with DNxHD fails due to bad parameters #100079

New Issue

Juuso Laine · 2022-07-30T13:10:07+02:00

Juuso Laine commented

2022-07-30 13:10:07 +02:00

Steps to reproduce:

Change output file format to FFMPEG Video.
Change codec to DNxHD.
Try to render. You get an error.

Looks like constant_rate_factor is set to FFM_CRF_MEDIUM, which shouldn't happen for DNxHD codecs, as it causes crf to be set in the FFMPEG options.

Original Report

System Information
Operating system: Windows 10 19044.1826
Graphics card: GTX 1070

Blender Version
Broken: 3.4.0 alpha master 9b9417b661 (also tested on 3.2.1 master a2d59b2dac so this isn't a bug with introduced in alpha)
Worked: wasn't able to find a working version

Short description of error
DNxHD rendering doesn't normally work, but I was able to get one file working somehow. Both attached files should have exact same settings, but only one renders. When the render fails with the broken file, it gives the ff_frame_thread_encoder_init failed error, and with --debug-ffmpeg, video parameters are incompatible with DNxHD. Notably however both files print the same video parameters to the console:

  Using type=4, codec=99, audio_codec=0,
  video_bitrate=120000, audio_bitrate=192,
  gop_size=15, autosplit=0
  render width=1920, render height=1080

Exact steps for others to reproduce the error
Try rendering both files. With the working file, I have previously used a DNxHD file in sequencer and rendered it as H264 lossless, however I wasn't able to reproduce a working file with this. The broken file is a default file, with a video file in sequencer, and the render output settings changed to DNxHD.

system-info.txt
DNxHD broken.blend
DNxHD works.blend

Steps to reproduce: - Change output file format to FFMPEG Video. - Change codec to DNxHD. - Try to render. You get an error. Looks like `constant_rate_factor` is set to `FFM_CRF_MEDIUM`, which shouldn't happen for DNxHD codecs, as it causes `crf` to be set in the FFMPEG options. ### Original Report **System Information** Operating system: Windows 10 19044.1826 Graphics card: GTX 1070 **Blender Version** Broken: 3.4.0 alpha master 9b9417b66150 (also tested on 3.2.1 master a2d59b2dac9e so this isn't a bug with introduced in alpha) Worked: wasn't able to find a working version **Short description of error** DNxHD rendering doesn't normally work, but I was able to get one file working somehow. Both attached files should have exact same settings, but only one renders. When the render fails with the broken file, it gives the `ff_frame_thread_encoder_init failed` error, and with --debug-ffmpeg, video parameters are incompatible with DNxHD. Notably however both files print the same video parameters to the console: ``` Using type=4, codec=99, audio_codec=0, video_bitrate=120000, audio_bitrate=192, gop_size=15, autosplit=0 render width=1920, render height=1080 ``` **Exact steps for others to reproduce the error** Try rendering both files. With the working file, I have previously used a DNxHD file in sequencer and rendered it as H264 lossless, however I wasn't able to reproduce a working file with this. The broken file is a default file, with a video file in sequencer, and the render output settings changed to DNxHD. [system-info.txt](https://archive.blender.org/developer/F13326401/system-info.txt) [DNxHD broken.blend](https://archive.blender.org/developer/F13326399/DNxHD_broken.blend) [DNxHD works.blend](https://archive.blender.org/developer/F13326400/DNxHD_works.blend)

Juuso Laine commented

2022-07-30 13:10:07 +02:00

Added subscriber: @Juuso-Laine

Omar Emara commented

2022-08-01 11:08:44 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-08-01 11:08:44 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Omar Emara commented

2022-08-01 11:08:44 +02:00

Looks like constant_rate_factor is set to FFM_CRF_MEDIUM, which shouldn't happen for DNxHD codecs, as it causes crf to be set in the FFMPEG options.

Looks like `constant_rate_factor` is set to `FFM_CRF_MEDIUM`, which shouldn't happen for `DNxHD` codecs, as it causes `crf` to be set in the FFMPEG options.

Omar Emara changed title from ~~Strange DNxHD bug, one blend file renders but other doesn't with exact same settings~~ to Encoding with DNxHD fails due to bad parameters

2022-08-01 11:11:48 +02:00

blender-admin commented

2022-08-17 04:49:38 +02:00

This issue was referenced by 06a01168f6

This issue was referenced by 06a01168f669aa223f87f6b65538ce36c5300157

Richard Antalik commented

2022-08-17 05:12:01 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Richard Antalik closed this issue

2022-08-17 05:12:01 +02:00

Richard Antalik self-assigned this 2022-08-17 05:12:01 +02:00

Richard Antalik commented

2022-08-17 05:14:06 +02:00

Note for fix, to observe effect, set codec to different one and back to DNxHD.

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Encoding with DNxHD fails due to bad parameters #100079

Original Report