Post Text:
Hi everyone,
I’m trying to merge an opening video with a full episode using MKVToolNix, but I’m running into compatibility issues between the two files. My goal is to make both videos match exactly in specs to avoid playback errors or glitches.
Episode details (working fine):
- Format: MKV
- Resolution: 1280x720
- FPS: 23.976
- Profile: Main@L3.1
- Reference frames: 3
- Bitrate: 1020 kbps
- Scan type: Progressive
- Color space: BT.709
Opening details (before re-encoding):
- Profile: Main@L4.1
- Reference frames: 2 or 4 (depending on the encode)
- Bitrate: High or variable
- Sometimes the file is MP4 instead of MKV
- Audio and video sometimes don’t sync properly
Issues I’m facing:
- When I merge them in MKVToolNix, the player shows a green screen or errors.
- Sometimes the opening doesn’t play correctly at all.
- MediaInfo shows differences in:
- Profile (L4.1 vs L3.1)
- Ref Frames (4 vs 3)
- Writing application (lavf vs mkvmerge)
What I’ve done so far:
- Exported the opening from Adobe Premiere with:
- 1280x720 resolution
- 23.976 FPS
- Main@L3.1 profile
- 1020 kbps bitrate
- Temporarily removed the audio to test just the video
- Converted it to MKV to match the episode
- But it’s still not merging cleanly — either green screen or glitches
- Tried matching specs manually, but something’s still off
What I need help with:
- How can I export the opening with specs identical to the episode?
- Is there a preset in Adobe Premiere or Shutter Encoder I can use?
- Should I re-encode the episode too so both files start from the same baseline?
- Would doing this with FFmpeg be more reliable for full control?
Thanks in advance for any help 
I can also provide full MediaInfo reports for both files if needed!