[go: nahoru, domu]
Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

When Merging and Cutting MP4 files Subtitles get lost. #1371

Closed
4 tasks done
McEilif opened this issue Nov 13, 2022 · 3 comments
Closed
4 tasks done

When Merging and Cutting MP4 files Subtitles get lost. #1371

McEilif opened this issue Nov 13, 2022 · 3 comments

Comments

@McEilif
Copy link
McEilif commented Nov 13, 2022

I have a lot of issues to go through, so in order to make it easier for me to help you, I ask that you please try these things first

Operating System

Windows 10

Steps to reproduce

I wrote you a detailed email on mifi@ya####.no with 21 Screendumps included.

I have never been logged in here in Github before, so I have no idea if this will be public or an internal message... Please check Email and comment on that, post it if you like. Thanks!

Expected behavior

Cutted MP4 merged with other Cutted MP4 should still show subtitle track1 (Geodata from DJI-Drone)
dump01-original_mp4_sbt1(engelsk)

Actual behavior

Cutting 3 Streams unfortunately isn't possible to Merge in one session as before. So first hat to merge 3 streams - Subtitles still works, but merged file has renamed Subtitle Name and added another Track with Chapter Names.

When I now CUT and "Export/Merge" Subtitles are lost. See screendumps
dump16_subtitletrack2
dump15-2subtitletracks
2 - Tracknumber and Lenght changed for Subtitles

Share log

It doesn't crash, but changes the Subtitle Tracks. Can it have something to do with a missing option in the Track-List?
dump12-Tracktype-Subtitle-missing

But again - I emailed you Mikael - there are 21 Screendumps I made Stepwise... Love your program - Oh btw: I had this problem from first time I used LossLessCut - it is not just the latest Version!
@mifi
Copy link
Owner
mifi commented Feb 16, 2023

i don't remember, was this resolved?

@jtognazzi
Copy link
jtognazzi commented Feb 21, 2023 •
edited
Loading

I have similar issue with subtitle.
After cuting an MP4 file, the resulting MP4 still has subtitle track metadata, but the text does not appear on the video (VLC, gnome video player)

If I try to extract just the subtitle track to a file I have an error:

Failed to extract track Error: Command failed with exit code 1: /snap/losslesscut/118/resources/ffmpeg -hide_banner -i /Downloads/my video.mp4 -map 0:4 -c copy -f matroska -y /Downloads/my video-stream-4-subtitle-mov_text.mks
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Downloads/my video.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomiso2iso5dashavc1dby1mp41
  Duration: 01:40:08.02, start: 0.000000, bitrate: 5317 kb/s
  Stream #0:0[0x1](fra): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 4456 kb/s, 50 fps, 50 tbr, 1k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](fra): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 126 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](fra): Audio: eac3 (ec-3 / 0x332D6365), 48000 Hz, 5.1(side), fltp, 256 kb/s
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
    Side data:
      audio service type: main
  Stream #0:3[0x4](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 126 kb/s
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
  Stream #0:4[0x5](fra): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default)
    Metadata:
      handler_name    : SubtitleHandler
[matroska @ 0x7422840] Subtitle codec 94213 is not supported.
Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented
Error initializing output stream 0:0 --

Is there a bug with the subtitle export, or am I missing something ?
I'll try to make proper report if I find the time.

I used latest version from snap (You are running version 3.52.0)

@mifi
Copy link
Owner
mifi commented Mar 4, 2023 •
edited
Loading

@jtognazzi your issue is unrelated to this issue, but I have now fixed your issue, thanks!
Edit: I'm not sure which file format to use for mov_text, but mp4 seems to work.

mifi added a commit that referenced this issue Mar 4, 2023
@mifi
fix mov_text subtitle export #1371
d8ccbc1
@mifi mifi closed this as completed Apr 4, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
3 participants
@mifi @jtognazzi @McEilif