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It is currently September 28th, 2020, 12:18 pm

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 Post subject: Re: Lots of ffprobe processes running at 100%
PostPosted: September 23rd, 2019, 9:44 am 
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Joined: May 3rd, 2018, 9:31 am
Posts: 3
mediainthe6 wrote:
After some rudimentary testing I have been able to reproduce the ffProbe issue consistently and also resolve it consistently using two test movie titles. Here are some observations from my tests:

1. There appears to be a correlation between specific youtube files and the issue being triggered.
2. When I have a "problem" trailer file being downloaded from Youtube, the file completes downloading but never gets renamed.
3. Manually renaming the trailer, in and of itself, is not a solution, as the issue will continue with the renamed file.
3. Providing MCM with an alternative Youtube trailer ID to download resolves the problem.
4. The mere fact that I am providing the Youtube ID to MCM is not, in and of itself, the solution, as the issue can be reintroduced by choosing the wrong Youtube video.
5. The MediaInfo properties of the "good" trailers, and the "bad" trailers differ significantly.
6. Of note neither of the "bad" trailers seems to have a separate "Audio" section listed in their MediaInfo, and trying to Demux either of the "bad" trailers fails in MP4Box as only one stream is detected.
7. I was able to test out an AV1 file the "AV1 Beta Launch Playlist https://www.youtube.com/playlist?list=P ... NUQAVLwrZS" the format of the successful AV1 Test file is Main@L4.0 not Main@L3.1

Supporting Files: https://spaces.hightail.com/receive/K6Px53mDuI/
Passcode to access files= America's neighbor to the North.


To provide some additional clarity (it was very late when I completed my tests and my post):

I identified two of my trailers that were currently causing the ffprobe problem (via processexplorer). Both of the trailers had been auto-downloaded by MCM (autodownload, no re-encoding). I cleaned out the metadata and the trailers and fetched the metadata again. In both cases, the problem recurred with the new trailers that were downloaded. Then I removed and downloaded the trailers again but this time using the 'Prompt' option and used the second trailer that was available in YouTube. In this case the videos downloaded successfully and the ffprobe process behaved normally. I then repeated the process (prompt) and this time selected the first result in YouTube and the problem recurred in both cases. I was able to repeat this several times and the behavior was consistent. Looking at the MediaInfo results, I noted differences between what was being reported for the 'Good' files and the 'Bad' files. Thinking I might be onto something I then tried to see if there was a way in YouTube to identify what Video Codecs were in which files if there were differences. Since both 'Bad' files were in AV1 and both 'Good' files were AVC, I looked for another AV1 file to use to test if it would fail to work as well. That's how I ended up on the “AV1 Beta Launch Playlist” (https://www.youtube.com/playlist?list=PLyqf6gJt7KuHBmeVzZteZUlNUQAVLwrZS). I used one of the samples as a test trailer. It downloaded without causing any issues. A quick comparison of the respective MediaInfo showed that my test file while AV1 had a different Format profile (Main@L4.0) than my 'bad' files (Main@L3.1). It was very late in the night, my typing was becoming less coherent and I had basically exhausted any value that I could bring to the process given that I know little to nothing about media containers, video codecs, encoding/decoding etc. I feel like being able to trip and resolve the problem consistently in and of itself is the most value I can bring to this and hoping that what I have noted helps the more informed among us to zero in on the problem. I uploaded samples from my testing and in the MediaInfo files at the top I also noted the YouTube URLs for the good and bad source videos. Below is a list of the files that were uploaded and some of the MediaInfo (complete info in the attachments) to provide a quick overview:

Files can be found here: https://spaces.hightail.com/receive/K6Px53mDuI/
Passcode to access files= America's neighbor to the North.

  1. Bad Version: Girl in the Spider's Web
    • Format: dash
    • Codec ID: dash (iso6/av01/mp41)
    • Format/Info: AOMedia Video 1
    • Format profile: Main@L3.1
    • Codec ID: av01
    • Files:
      • 1a. [bad]--MediaInfo--Girl in the Spider's Web, The (2018).txt
      • 1b. [bad]--trailer--Girl in the Spider's Web, The (2018).mp4

  2. Bad Version: Spider-Man, Into the Spider-Verse
    • Format: dash
    • Codec ID: dash (iso6/av01/mp41)
    • Format/Info: AOMedia Video 1
    • Format profile: Main@L3.1
    • Codec ID: av01
    • Files:
      • 2a. [bad]--MediaInfo--Spider-Man, Into the Spider-Verse (2018).txt
      • 2b. [bad]--trailer--Spider-Man, Into the Spider-Verse (2018).mp4

  3. Good Version: Girl in the Spider's Web
    • Format: MPEG-4
    • Format profile: Base Media / Version 2
    • Codec ID: mp42 (isom/mp42)
    • Video Format: AVC
    • Video Codec: Advanced Video Codec
    • Format profile: Main@L3.1
    • Codec ID: avc1
    • Files:
      • 3a. [good]--MediaInfo--Girl in the Spider's Web, The (2018).txt
      • 3b. [good]--trailer--Girl in the Spider's Web, The (2018).mp4

  4. Good Version: Spider-Man, Into the Spider-Verse
    • Format: MPEG-4
    • Format profile: Base Media / Version 2
    • Codec ID: mp42 (isom/mp42)
    • Video Format: AVC
    • Video Codec: Advanced Video Codec
    • Format profile: Main@L3.1
    • Codec ID: avc1
    • Files:
      • 4a. [good]--MediaInfo--Spider-Man, Into the Spider-Verse (2018).txt
      • 4b. [good]--trailer--Spider-Man, Into the Spider-Verse (2018).mp4

  5. Good Version: AV1 Test
    Randomly Chosen From “AV1 Beta Launch Playlist” (https://www.youtube.com/playlist?list=P ... NUQAVLwrZS): Retractions: Last Week Tonight with John Oliver (https://www.youtube.com/watch?v=2nXYbGmF3_Q)
    • Format: dash
    • Codec ID: dash (iso6/av01/mp41)
    • Video Format: AV1
    • Format/Info: AOMedia Video 1
    • Format profile: Main@L4.0
    • Codec ID: av01
    • Files:
      • 5a. [test] AV1 Test Video.txt
      • 5b. [test] AV1 Test Video.mp4


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 Post subject: Re: Lots of ffprobe processes running at 100%
PostPosted: September 27th, 2019, 2:38 pm 
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Downloaded Clip

Joined: September 27th, 2019, 2:36 pm
Posts: 1
Thanks for letting me know so I don't do the same thing.

It would help if I even knew what it ffmpeg was for. I'll try going through the settings and disabling things related to recoding or creating icons.


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 Post subject: Re: Lots of ffprobe processes running at 100%  [SOLVED]
PostPosted: November 27th, 2019, 4:51 pm 
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Joined: May 1st, 2009, 10:12 am
Posts: 11689
Location: Meridian, ID, USA
Try version 2.19 build 33119.937.

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Peter Souza IV
stable version 2.20.21820.1071 / August 5th, 2020
Media Center Master on Facebook!


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 Post subject: Re: Lots of ffprobe processes running at 100%
PostPosted: December 6th, 2019, 1:22 pm 
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Joined: May 1st, 2009, 10:12 am
Posts: 11689
Location: Meridian, ID, USA
Has anyone been able to confirm this fix? If I don't hear back, I'll assume it's fixed and marked this off.

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Peter Souza IV
stable version 2.20.21820.1071 / August 5th, 2020
Media Center Master on Facebook!


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 Post subject: Re: Lots of ffprobe processes running at 100%
PostPosted: December 11th, 2019, 9:42 am 
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Joined: May 1st, 2009, 10:12 am
Posts: 11689
Location: Meridian, ID, USA
No response, closing this as fixed.

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Peter Souza IV
stable version 2.20.21820.1071 / August 5th, 2020
Media Center Master on Facebook!


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 Post subject: Re: Lots of ffprobe processes running at 100%
PostPosted: January 8th, 2020, 1:03 am 
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Downloaded Clip

Joined: May 3rd, 2018, 9:31 am
Posts: 3
Pete wrote:
Has anyone been able to confirm this fix? If I don't hear back, I'll assume it's fixed and marked this off.


Thanks Pete! Looks like you resolved it.


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