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  1. http://i.imgur.com/IS1Q3vL.jpg


    Hi Guys

    I am using shotcut. As you can see this file is in the time line but it isnt showing any waveforms. I have made sure it is enabled .

    Any ideas why ??

    File specs:

    C:\User\ffprobe -i 3.mov
    ffprobe version N-72849-g4af9eb4 Copyright (c) 2007-2015 the FFmpeg developers
    built with gcc 4.9.2 (GCC)
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    -enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --e
    odplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger
    libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-l
    able-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
    libavutil 54. 27.100 / 54. 27.100
    libavcodec 56. 41.100 / 56. 41.100
    libavformat 56. 36.100 / 56. 36.100
    libavdevice 56. 4.100 / 56. 4.100
    libavfilter 5. 16.101 / 5. 16.101
    libswscale 3. 1.101 / 3. 1.101
    libswresample 1. 2.100 / 1. 2.100
    libpostproc 53. 3.100 / 53. 3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3.mov':
    Metadata:
    major_brand : qt
    minor_version : 512
    compatible_brands: qt
    encoder : Lavf56.36.100
    Duration: 02:33:20.38, start: 0.000000, bitrate: 37312 kb/s
    Stream #0:0(eng): Video: prores (apco / 0x6F637061), yuv422p10le, 1440x1080, 35772 kb/s, SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
    Metadata:
    handler_name : DataHandler
    encoder : Lavc56.41.100 prores
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
    handler_name : DataHandler
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  2. I don't use shotcut, but does it display with other types of files ? For example, download a random Youtube MP4 video and import it

    What does the audio tab say ?
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  3. Shotcut Lead Developer
    Join Date
    Jun 2015
    Location
    California
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    This is a known problem with very long (duration) shots on the timeline. If you really need the waveform, you will have to slice that over 2.5 hour clip into 3 roughly equal pieces.
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  4. Member budwzr's Avatar
    Join Date
    Apr 2007
    Location
    City Of Angels
    Search Comp PM
    That's highly unusual to have a single 2.5 hr video clip. That thing would probably choke a lot of NLEs.
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  5. sir when I load a 17 minute mp4 it does the same thing.

    the computer has a dual core celeron with 2 gigs of ram and it runs windows 8 64 bit. maby it just lacks specs.
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  6. Shotcut Lead Developer
    Join Date
    Jun 2015
    Location
    California
    Search PM
    There are a few factors. First, upon adding a clip to the timeline, it may take several minutes to analyze the audio in the background for very long clips. Obviously, this depends on the speed of your computer. The analysis result is stored in a database for the next time - if that completes successfully before you quit. Then, I did some testing and noticed a couple things. When I added a 26 minute clip, it shows me a solid dark rectangle instead of a waveform. Maybe on your system, it is transparent? If I zoom the timeline out some, eventually it draws. It seems the problem is related to the size of the waveform graphical element. If I load a 1 hour clip, the waveform draws only if I zoom out very far. I also notice that on my dual core Windows 8.1 machine, the waveform drawing on long clips makes the program slow to use. Sorry, but that is the way it is until we decide to rework this area of the app.
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