The VideoLAN Forums

Posted: **17 Apr 2020 18:13**

I have an old video file here that I could play with an unknown video player many years ago. It's a short sequence that I'd like to convert into something that's compatible with today. VLC can't play it and I have no idea what format it is. I've uploaded it here ([url]https://ygoe.de/s/RPfZM5c1SvYm56C8[/url]). ffmpeg does convert the file into mp4 or mkv, but the result has no video stream in it anymore. What are my options now?

Posted: **07 Jun 2020 20:46**

Has anybody got an idea how I could read and convert that old video file?

Posted: **08 Jun 2020 00:34**

Strange file indeed! It crashes MPV after 2 or 3 seconds, MPC-HC displays a black screen and stops the playback after something like 5 seconds.
FFplay can play it but it complains about a duplicated MOOV atom:

Code: Select all

[mov,mp4,m4a,3gp,3g2,mj2 @ 0000006bb5508e40] Found duplicated MOOV Atom. Skipped it
[mjpeg @ 0000006bb550cd40] EOI missing, emulating sq=    0B f=0/0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2007-03-27T21:26:56.000000Z
    encoder         : Compiled by Revver Inc. TMS v2.0
    encoder-eng     : Compiled by Revver Inc. TMS v2.0
  Duration: 00:00:27.47, start: 0.000000, bitrate: 377 kb/s
    Stream #0:0(eng): Data: none, 4 kb/s (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Sprite Animation Media Handler
    Stream #0:1(eng): Data: none, 1 kb/s (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Apple Movie Media Handler
    Stream #0:2(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj444p(pc, bt470bg/unknown/unknown), 480x360 [SAR 100:100 DAR 4:3], 6 kb/s, 0.33 fps, 0.33 tbr, 600 tbn, 600 tbc (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Photo - JPEG
    Stream #0:3(eng): Subtitle: mov_text (text / 0x74786574), 1 kb/s (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Apple Text Media Handler
    Stream #0:4(eng): Video: qtrle (rle  / 0x20656C72), bgra, 32x2, 0 kb/s, SAR 1:12 DAR 4:3, 0.33 fps, 0.33 tbr, 600 tbn, 600 tbc (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Animation
    Stream #0:5(eng): Data: none, 0 kb/s (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Sprite Animation Media Handler
    Stream #0:6(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / 0x7634706D), yuv420p(pc, smpte170m/unknown/smpte170m), 480x360 [SAR 1:1 DAR 4:3], 415 kb/s,
 30 fps, 30 tbr, 600 tbn, 1k tbc (default)
    Metadata:
      creation_time   : 2007-03-27T21:26:56.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : MPEG-4 Video
  30.82 M-V: -0.023 fd=  15 aq=    0KB vq=    0KB sq=    0B f=0/0

You should create a new ticket on the VLC Trac with the links to your file and to this thread.
https://trac.videolan.org/vlc/

Posted: **08 Jun 2020 10:28**

classical low frame rate issue

Posted: **08 Jun 2020 10:49**

I don't think so:

Code: Select all

Video #3
ID                                       : 7
Format                                   : MPEG-4 Visual
Format profile                           : Advanced Simple@L3
Format settings                          : BVOP
Format settings, BVOP                    : Yes
Format settings, QPel                    : No
Format settings, GMC                     : No warppoints
Format settings, Matrix                  : Default (H.263)
Codec ID                                 : mp4v-20
Bit rate                                 : 415 kb/s
Width                                    : 480 pixels
Height                                   : 360 pixels
Display aspect ratio                     : 4:3
Frame rate mode                          : Constant
Frame rate                               : 30.000 FPS
Color space                              : YUV
Bit depth                                : 8 bits
Scan type                                : Progressive

Posted: **08 Jun 2020 14:23**

There are several streams in the file (MediaInfo): JPEG, RLE, MPEG-4 Visual, Timed Text, ... VLC 2.0.8 can play the video, but it is played in a separate "VLC (Direct3D output)" window. There are 3 separate windows. Another "VLC (Direct3D output)" window is black and main interface with controllers is just black, too. It is possible to remux the file in MKVToolNix and just to select the MPEG-4p2 stream there.

Posted: **14 Jun 2020 19:51**

Great, thank you all! MKVToolNix has converted that stream into a file that I can view again.

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