Error reading long MOV file

[Melkor]

Summary of the bug:

I have a 1.1TB ProRes 422 MOV file (a bit more than 24 hours of recording) when I open it with FFmpeg i get the following:

[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000002611ca0] Invalid sample_count=-118755256
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000002611ca0] error reading header
Metadata Error.mov: Invalid data found when processing input 

How to reproduce:

% ffmpeg -v error -i input
ffmpeg N-87353-g183fd30

The same file works fine in VLC and I get correct metadata from it using MediaInfo.

[Carl Eugen Hoyos]

To make this a valid ticket, please test current FFmpeg git head, provide the command line you tested with default or higher verbosity together with the complete, uncut console output and explain how the sample was created.

[Carl Eugen Hoyos]

And please test if attached patch really fixes the issue you see.

[Melkor]

I created this file using Matrox DSX Utils SDK on Windows.

ffmpeg version N-87353-g183fd30 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 76.100 / 55. 76.100
  libavcodec     57.106.101 / 57.106.101
  libavformat    57. 82.101 / 57. 82.101
  libavdevice    57.  8.101 / 57.  8.101
  libavfilter     6.105.100 /  6.105.100
  libswscale      4.  7.103 /  4.  7.103
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000026a1ca0] Invalid sample_count=-118755256
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000026a1ca0] error reading header
Metadata Error.mov: Invalid data found when processing input

That patch almost does it. You need to change MOVStts.count on isom.h (sorry I don't know how to generate the diff files myself).

I did the same changes in a local build and it worked.

[Carl Eugen Hoyos]

Replying to Melkor:

That patch almost does it. You need to change MOVStts.count on isom.h (sorry I don't know how to generate the diff files myself).

Please send your patch - made with git format-patch to the development mailing list, I cannot test here.

[Melkor]

I'll try. Thank you.

[Carl Eugen Hoyos]

Pushed your patch as 1015982f45d832ee926a81460121673a97292333 - thank you for the report and the fix!

[Melkor]

Awesome, thank you!

[Carl Eugen Hoyos]

This was a duplicate of ticket #5911.