Voukoder export fails when using In/Out points in Media Encoder

When exporting with Voukoder in Media Encoder (using any codec), if In/Out points are set, the exported video may have playback problems — such as only audio playing, or the file failing to open at all.

If I export without setting In/Out points, or use the native Adobe encoder, everything works normally.

Example:
If I export a 10-minute segment from a longer Premiere Pro sequence, and the In point is not at the start of the sequence, the resulting video has incorrect timing and cannot play correctly.

• Voukoder Pro version: [2.0.12.0]
• FFmpeg version installed: [7.1]
• I’m using Adobe Media Encoder 2025 (v25.3) with Premiere Pro 2025.
  
  
  I inspected the exported MP4 using FFmpeg and found that the video and audio streams start at different timestamps, which likely causes the playback issues:
• Audio stream start time: 0.000s
• Video stream start time: 2047.345s
• Actual video duration: ~99s
• Container (MP4) reports total duration: ~2147s
• This means the video stream starts much later than the audio stream. Some players (like PotPlayer) are able to compensate, but most players (like VLC or Chrome) fail to play it correctly — either showing a black screen or refusing to open the file.