Encoding error

[schlotkins]

I have a movie that I am trying to encode. The audio is not being re-encoding so it's just video. One time the program crashed at 15 mins in and now it crashed again. It's a 4k HDR source. Here's the error:

[vost#0:0/libx265 @ 00000165d2ad4080] Error submitting a packet to the muxer: Invalid argument
[out#0/matroska @ 00000165d2a5e200] Error muxing a packet
[out#0/matroska @ 00000165d2a5e200] Task finished with error code: -22 (Invalid argument)
[out#0/matroska @ 00000165d2a5e200] Terminating thread with return code -22 (Invalid argument)
[out#0/matroska @ 00000165d2a5e200] Error writing trailer: Invalid argument
[out#0/matroska @ 00000165d2a5e200] Error closing file: Invalid argument
[out#0/matroska @ 00000165d2a5e200] video:562325KiB audio:262454KiB subtitle:0KiB other streams:0KiB global headers:3KiB muxing overhead: unknown
frame= 9775 fps=3.6 q=20.6 Lsize= 817920KiB time=00:06:47.61 bitrate=16438.0kbits/s speed=0.151x elapsed=0:45:02.88

Machine doing the work is a AMD 9600x with 64GB of ram.

Any ideas? Thanks!
Chris

[cdgriffith]

Just ran this through claude code as it's more a FFmpeg question, so not sure myself:

● This error typically indicates a timestamp/PTS (Presentation Time Stamp) issue during muxing. Common causes:                                                                                           
                                                                                                                                                                                                         
  1. Variable frame rate (VFR) source - Timestamps become discontinuous or out of order                                                                                                                  
  2. Corrupt/problematic source file - Discontinuities or gaps in the original video's timestamps                                                                                                        
  3. Seek/trim operations - Cutting without proper timestamp reset can cause invalid PTS values                                                                                                          
  4. Audio/video desync - Streams with mismatched durations or timestamps                                                                                                                                
                                                                                                                                                                                                         
  Potential fixes:                                                                                                                                                                                       
                                                                                                                                                                                                         
  # Force constant frame rate and reset timestamps                                                                                                                                                       
  -vsync cfr -fflags +genpts                                                                                                                                                                             
                                                                                                                                                                                                         
  # Or use the setpts filter to reset timestamps                                                                                                                                                         
  -vf "setpts=PTS-STARTPTS"                                                                                                                                                                              
                                                                                                                                                                                                         
  # For audio too                                                                                                                                                                                        
  -af "asetpts=PTS-STARTPTS"                                                                                                                                                                             
                                                                                                                                                                                                         
  To diagnose further, you could:                                                                                                                                                                        
  - Check if the source has VFR: ffprobe -select_streams v -show_entries frame=pts_time -of csv=p=0 input.mkv | head -100                                                                                
  - Try a different container (MP4) to see if it's Matroska-specific                                                                                                                                     
  - Run with -report flag for detailed FFmpeg logs