VSE Detecting and setting incorrect frame rate #53687

New Issue

ChristopherAnderssarian · 2018-01-03T17:55:10+01:00

2018-01-03 17:55:10 +01:00

System Information
Windows 7 Ultimate, 64-bit, 32GB, 5960x, Nvidia Quadro FX 1800 (Primary) & GeForce 9800 GTX+ (Secondary)
Graphics Tablet: Wacom Bamboo Model: CTF-430 Driver Version 5.2.4-5

Blender Version
Official release(s) unless specified:
Broken: 2.79, 2.79.0-e59cf13 (Windows 64-Bit)
Worked: (N/A)

Short description of error

When adding the first video strip the VSE sets the wrong framerate.

Exact steps for others to reproduce the error

0001-0600 (60fps).mkv

Detect.blend

File I used to create the video.

VSE_Framerate.blend

P.S. I could have sworn I saw this bug reported here, but I can't find it and it's not fixed in the Daily build.

**System Information** Windows 7 Ultimate, 64-bit, 32GB, 5960x, Nvidia Quadro FX 1800 (Primary) & GeForce 9800 GTX+ (Secondary) Graphics Tablet: Wacom Bamboo Model: CTF-430 Driver Version 5.2.4-5 **Blender Version** Official release(s) unless specified: Broken: 2.79, 2.79.0-e59cf13 (Windows 64-Bit) Worked: (N/A) **Short description of error** When adding the first video strip the VSE sets the wrong framerate. ![Detecting 1000fps.png](https://archive.blender.org/developer/F1679577/Detecting_1000fps.png) **Exact steps for others to reproduce the error** [0001-0600 (60fps).mkv](https://archive.blender.org/developer/F1679661/0001-0600__60fps_.mkv) [Detect.blend](https://archive.blender.org/developer/F1679665/Detect.blend) File I used to create the video. [VSE_Framerate.blend](https://archive.blender.org/developer/F1679751/VSE_Framerate.blend) P.S. I could have sworn I saw this bug reported here, but I can't find it and it's not fixed in the Daily build.

ChristopherAnderssarian commented

2018-01-03 17:55:10 +01:00

Added subscriber: @ChristopherAnderssarian

Philipp Oeser commented

2018-01-03 19:18:12 +01:00

Added subscriber: @lichtwerk

Philipp Oeser self-assigned this 2018-01-03 19:18:12 +01:00

Philipp Oeser commented

2018-01-03 19:18:12 +01:00

first note:
ffmpeg itself [like outside of blender] detects the provided file as 1k fps, so this might not be the detection that goes wrong but the writing...

ffmpeg -i 0001-0600\ \(60fps\).mkv 
ffmpeg version 3.3.5 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7 (GCC)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
  libavutil      55. 58.100 / 55. 58.100
  libavcodec     57. 89.100 / 57. 89.100
  libavformat    57. 71.100 / 57. 71.100
  libavdevice    57.  6.100 / 57.  6.100
  libavfilter     6. 82.100 /  6. 82.100
  libavresample   3.  5.  0 /  3.  5.  0
  libswscale      4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc    54.  5.100 / 54.  5.100
Input #0, matroska,webm, from '0001-0600 (60fps).mkv':
  Metadata:
    ENCODER         : Lavf57.56.100
  Duration: 00:00:10.00, start: 0.000000, bitrate: 1061 kb/s
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1k fps, 60 tbr, 1k tbn, 120 tbc (default)
    Metadata:
      DURATION        : 00:00:10.000000000

will dig deeper shortly... [either way there seems to be something wrong here]

first note: ffmpeg itself [like outside of blender] detects the provided file as 1k fps, so this might not be the detection that goes wrong but the writing... ``` ffmpeg -i 0001-0600\ \(60fps\).mkv ffmpeg version 3.3.5 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 7 (GCC) configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect libavutil 55. 58.100 / 55. 58.100 libavcodec 57. 89.100 / 57. 89.100 libavformat 57. 71.100 / 57. 71.100 libavdevice 57. 6.100 / 57. 6.100 libavfilter 6. 82.100 / 6. 82.100 libavresample 3. 5. 0 / 3. 5. 0 libswscale 4. 6.100 / 4. 6.100 libswresample 2. 7.100 / 2. 7.100 libpostproc 54. 5.100 / 54. 5.100 Input #0, matroska,webm, from '0001-0600 (60fps).mkv': Metadata: ENCODER : Lavf57.56.100 Duration: 00:00:10.00, start: 0.000000, bitrate: 1061 kb/s Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1k fps, 60 tbr, 1k tbn, 120 tbc (default) Metadata: DURATION : 00:00:10.000000000 ``` will dig deeper shortly... [either way there seems to be something wrong here]

Ray molenkamp commented

2018-01-23 17:01:29 +01:00

Added subscriber: @LazyDodo

Ray molenkamp commented

2018-01-23 17:01:29 +01:00

There used to be a bug in 2.79 in the writer indeed, should be fixed for 2.79a

Philipp Oeser commented

2018-01-23 17:20:30 +01:00

if you render provided .blend in 2.79a release branch, the output still reads like this (and will still be interpreted as 1000fps if opened in VSE)
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1k fps, 60 tbr, 1k tbn, 120 tbc (default)

if you render provided .blend in 2.79a release branch, the output still reads like this (and will still be interpreted as 1000fps if opened in VSE) `Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1k fps, 60 tbr, 1k tbn, 120 tbc (default)`

Ray molenkamp commented

2018-01-23 18:10:21 +01:00

i can't repro that with 2.79a @lichtwerk?

i rendered VSE_Framerate.blend this is what it spit out..

Input #0, matroska,webm, from '0001-0600.mkv':
  Metadata:
    ENCODER         : Lavf57.56.100
  Duration: 00:00:10.00, start: 0.000000, bitrate: 1076 kb/s
    Stream #0:0: Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn, 120 tbc (default)
    Metadata:
      DURATION        : 00:00:10.000000000

i can't repro that with 2.79a @lichtwerk? i rendered VSE_Framerate.blend this is what it spit out.. ``` Input #0, matroska,webm, from '0001-0600.mkv': Metadata: ENCODER : Lavf57.56.100 Duration: 00:00:10.00, start: 0.000000, bitrate: 1076 kb/s Stream #0:0: Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn, 120 tbc (default) Metadata: DURATION : 00:00:10.000000000 ```

Philipp Oeser commented

2018-01-23 18:22:19 +01:00

Sorry, was on wrong branch. Can confirm that it now writes correctly (and therefor also reads in correctly)

Still left is the case when fps and tbr dont match [like in the mkv posted here], see also #53857

Sorry, was on wrong branch. Can confirm that it now writes correctly (and therefor also reads in correctly) Still left is the case when fps and tbr dont match [like in the mkv posted here], see also #53857

Philipp Oeser removed their assignment 2018-02-04 22:22:53 +01:00

Philipp Oeser commented

2018-02-04 22:22:53 +01:00

Unfortunately I'll only be able to look at this in April again, so let others take over....