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• Developing MobyCAIRO

  26 mai 2021, par Multimedia Mike — General

  I recently published a tool called MobyCAIRO. The ‘CAIRO’ part stands for Computer-Assisted Image ROtation, while the ‘Moby’ prefix refers to its role in helping process artifact image scans to submit to the MobyGames database. The tool is meant to provide an accelerated workflow for rotating and cropping image scans. It works on both Windows and Linux. Hopefully, it can solve similar workflow problems for other people.

  As of this writing, MobyCAIRO has not been tested on Mac OS X yet– I expect some issues there that should be easily solvable if someone cares to test it.

  The rest of this post describes my motivations and how I arrived at the solution.

  Background
  I have scanned well in excess of 2100 images for MobyGames and other purposes in the past 16 years or so. The workflow looks like this :

  
  

  

  Image workflow

  
  

  It should be noted that my original workflow featured me manually rotating the artifact on the scanner bed in order to ensure straightness, because I guess I thought that rotate functions in image editing programs constituted dark, unholy magic or something. So my workflow used to be even more arduous :

  
  

  

  I can’t believe I had the patience to do this for hundreds of scans

  
  

  Sometime last year, I was sitting down to perform some more scanning and found myself dreading the oncoming tedium of straightening and cropping the images. This prompted a pivotal question :

  
  Why can’t a computer do this for me ?
  

  After all, I have always been a huge proponent of making computers handle the most tedious, repetitive, mind-numbing, and error-prone tasks. So I did some web searching to find if there were any solutions that dealt with this. I also consulted with some like-minded folks who have to cope with the same tedious workflow.

  I came up empty-handed. So I endeavored to develop my own solution.

  Problem Statement and Prior Work
  
  I want to develop a workflow that can automatically rotate an image so that it is straight, and also find the most likely crop rectangle, uniformly whitening the area outside of the crop area (in the case of circles).

  As mentioned, I checked to see if any other programs can handle this, starting with my usual workhorse, Photoshop Elements. But I can’t expect the trimmed down version to do everything. I tried to find out if its big brother could handle the task, but couldn’t find a definitive answer on that. Nor could I find any other tools that seem to take an interest in optimizing this particular workflow.

  When I brought this up to some peers, I received some suggestions, including an idea that the venerable GIMP had a feature like this, but I could not find any evidence. Further, I would get responses of “Program XYZ can do image rotation and cropping.” I had to tamp down on the snark to avoid saying “Wow ! An image editor that can perform rotation AND cropping ? What a game-changer !” Rotation and cropping features are table stakes for any halfway competent image editor for the last 25 or so years at least. I am hoping to find or create a program which can lend a bit of programmatic assistance to the task.

  Why can’t other programs handle this ? The answer seems fairly obvious : Image editing tools are general tools and I want a highly customized workflow. It’s not reasonable to expect a turnkey solution to do this.

  Brainstorming An Approach
  I started with the happiest of happy cases— A disc that needed archiving (a marketing/press assets CD-ROM from a video game company, contents described here) which appeared to have some pretty clear straight lines :

  
  
  

  My idea was to try to find straight lines in the image and then rotate the image so that the image is parallel to the horizontal based on the longest single straight line detected.

  I just needed to figure out how to find a straight line inside of an image. Fortunately, I quickly learned that this is very much a solved problem thanks to something called the Hough transform. As a bonus, I read that this is also the tool I would want to use for finding circles, when I got to that part. The nice thing about knowing the formal algorithm to use is being able to find efficient, optimized libraries which already implement it.

  Early Prototype
  A little searching for how to perform a Hough transform in Python led me first to scikit. I was able to rapidly produce a prototype that did some basic image processing. However, running the Hough transform directly on the image and rotating according to the longest line segment discovered turned out not to yield expected results.

  
  
  

  It also took a very long time to chew on the 3300×3300 raw image– certainly longer than I care to wait for an accelerated workflow concept. The key, however, is that you are apparently not supposed to run the Hough transform on a raw image– you need to compute the edges first, and then attempt to determine which edges are ‘straight’. The recommended algorithm for this step is the Canny edge detector. After applying this, I get the expected rotation :

  
  
  

  The algorithm also completes in a few seconds. So this is a good early result and I was feeling pretty confident. But, again– happiest of happy cases. I should also mention at this point that I had originally envisioned a tool that I would simply run against a scanned image and it would automatically/magically make the image straight, followed by a perfect crop.

  Along came my MobyGames comrade Foxhack to disabuse me of the hope of ever developing a fully automated tool. Just try and find a usefully long straight line in this :

  
  

  Darn it, Foxhack…
  

  There are straight edges, to be sure. But my initial brainstorm of rotating according to the longest straight edge looks infeasible. Further, it’s at this point that we start brainstorming that perhaps we could match on ratings badges such as the standard ESRB badges omnipresent on U.S. video games. This gets into feature detection and complicates things.

  This Needs To Be Interactive
  At this point in the effort, I came to terms with the fact that the solution will need to have some element of interactivity. I will also need to get out of my safe Linux haven and figure out how to develop this on a Windows desktop, something I am not experienced with.

  I initially dreamed up an impressive beast of a program written in C++ that leverages Windows desktop GUI frameworks, OpenGL for display and real-time rotation, GPU acceleration for image analysis and processing tricks, and some novel input concepts. I thought GPU acceleration would be crucial since I have a fairly good GPU on my main Windows desktop and I hear that these things are pretty good at image processing.

  I created a list of prototyping tasks on a Trello board and made a decent amount of headway on prototyping all the various pieces that I would need to tie together in order to make this a reality. But it was ultimately slowgoing when you can only grab an hour or 2 here and there to try to get anything done.

  Settling On A Solution
  Recently, I was determined to get a set of old shareware discs archived. I ripped the data a year ago but I was blocked on the scanning task because I knew that would also involve tedious straightening and cropping. So I finally got all the scans done, which was reasonably quick. But I was determined to not manually post-process them.

  This was fairly recent, but I can’t quite recall how I managed to come across the OpenCV library and its Python bindings. OpenCV is an amazing library that provides a significant toolbox for performing image processing tasks. Not only that, it provides “just enough” UI primitives to be able to quickly create a basic GUI for your program, including image display via multiple windows, buttons, and keyboard/mouse input. Furthermore, OpenCV seems to be plenty fast enough to do everything I need in real time, just with (accelerated where appropriate) CPU processing.

  So I went to work porting the ideas from the simple standalone Python/scikit tool. I thought of a refinement to the straight line detector– instead of just finding the longest straight edge, it creates a histogram of 360 rotation angles, and builds a list of lines corresponding to each angle. Then it sorts the angles by cumulative line length and allows the user to iterate through this list, which will hopefully provide the most likely straightened angle up front. Further, the tool allows making fine adjustments by 1/10 of an angle via the keyboard, not the mouse. It does all this while highlighting in red the straight line segments that are parallel to the horizontal axis, per the current candidate angle.

  
  
  

  The tool draws a light-colored grid over the frame to aid the user in visually verifying the straightness of the image. Further, the program has a mode that allows the user to see the algorithm’s detected edges :

  
  
  

  For the cropping phase, the program uses the Hough circle transform in a similar manner, finding the most likely circles (if the image to be processed is supposed to be a circle) and allowing the user to cycle among them while making precise adjustments via the keyboard, again, rather than the mouse.

  
  
  

  Running the Hough circle transform is a significantly more intensive operation than the line transform. When I ran it on a full 3300×3300 image, it ran for a long time. I didn’t let it run longer than a minute before forcibly ending the program. Is this approach unworkable ? Not quite– It turns out that the transform is just as effective when shrinking the image to 400×400, and completes in under 2 seconds on my Core i5 CPU.

  For rectangular cropping, I just settled on using OpenCV’s built-in region-of-interest (ROI) facility. I tried to intelligently find the best candidate rectangle and allow fine adjustments via the keyboard, but I wasn’t having much success, so I took a path of lesser resistance.

  Packaging and Residual Weirdness
  I realized that this tool would be more useful to a broader Windows-using base of digital preservationists if they didn’t have to install Python, establish a virtual environment, and install the prerequisite dependencies. Thus, I made the effort to figure out how to wrap the entire thing up into a monolithic Windows EXE binary. It is available from the project’s Github release page (another thing I figured out for the sake of this project !).

  The binary is pretty heavy, weighing in at a bit over 50 megabytes. You might advise using compression– it IS compressed ! Before I figured out the --onefile command for pyinstaller.exe, the generated dist/ subdirectory was 150 MB. Among other things, there’s a 30 MB FORTRAN BLAS library packaged in !

  Conclusion and Future Directions
  Once I got it all working with a simple tkinter UI up front in order to select between circle and rectangle crop modes, I unleashed the tool on 60 or so scans in bulk, using the Windows forfiles command (another learning experience). I didn’t put a clock on the effort, but it felt faster. Of course, I was livid with proudness the whole time because I was using my own tool. I just wish I had thought of it sooner. But, really, with 2100+ scans under my belt, I’m just getting started– I literally have thousands more artifacts to scan for preservation.

  The tool isn’t perfect, of course. Just tonight, I threw another scan at MobyCAIRO. Just go ahead and try to find straight lines in this specimen :

  
  
  

  I eventually had to use the text left and right of center to line up against the grid with the manual keyboard adjustments. Still, I’m impressed by how these computer vision algorithms can see patterns I can’t, highlighting lines I never would have guessed at.

  I’m eager to play with OpenCV some more, particularly the video processing functions, perhaps even some GPU-accelerated versions.

  The post Developing MobyCAIRO first appeared on Breaking Eggs And Making Omelettes.

• Screen capture (video screencast) with FFMPEG with very low FPS

  20 septembre 2023, par jesusda

  I recently changed PCs, I went from having an Intel Core i5 4460 with integrated graphics card to a Xeon E5 2678 v3 with AMD RADEON RX 550 graphics.

  


  On paper, the new PC is on the order of 3 to 7 times more powerful than the old one and I can attest that this is the case in daily use, video and image editing etc. The advantage of having so many cores and threads available is palpable. In terms of games I haven't tried it because I'm not really a gamer and the few games I use are the typical free ones that come with Debian and some emulators that, honestly, already worked fine with the old PC.

  


  However there is one task that brings me head over heels for its terrible performance : video screen capture.

  


  With my old PC I was able to capture at over 60 fps at full screen while doing any task I needed to record.

  


  Even with my lenovo thinkpad x230 I am able to capture screen at over 80fps with total fluency.

  


  The command I have always used is :

  


  ffmpeg  -f x11grab -draw_mouse 1 -framerate 60 -video_size 1920x1200 -i :0.0+1680,0  -qscale 0 -pix_fmt yuv420p -c:v libx264 -preset medium -qp 0 -q:v 1 -s 1920x1200 -f matroska -threads 4 video.mkv


  


  notes :

  


  -video_size 1920x1200 -i :0.0+1680,0 y -s 1920x1200 are the dimensions and position of the region to capture (my right monitor).

  


  Notice that I even used -preset medium and software encoding, so I got very good quality even with that parameter setting and without ever going below 60 fps.

  


  What happens to me now ?

  


  The equipment is unable to capture more than 20 fps which makes any video invalid, with frame drops and not even reach 30fps, which would be the minimum required.

  


  In addition, it is quite noticeable the decrease in responsiveness of the PC as soon as I launch the command. That is, all that fluidity and smoothness that is appreciated when working normally, disappears and even moving a window from one side to another is rough and stumbling.

  


  I have tried with different parameters of ffmpeg, to capture raw, without encoding.

  


  I have tried saving the resulting video directly to RAM disk in order to avoid the possible bottleneck of writing to disk. It doesn't affect it at all.

  


  So, does anyone have any suggestions as to at least where I can dig further to find a solution to the problem ?

  


  Additional data, in case it helps :

  


  $ → inxi
CPU: 12-Core Intel Xeon E5-2678 v3 (-MT MCP-)
speed/min/max: 1201/1200/3300 MHz Kernel: 5.10.0-0.bpo.4-amd64 x86_64
Up: 1d 6h 55m Mem: 6427.6/32012.4 MiB (20.1%)
Storage: 13.76 TiB (55.9% used) Procs: 433 Shell: bash 5.0.18 inxi: 3.0.32


$ → ffmpeg -v
ffmpeg version 4.1.6 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --disable-decoder=amrnb --disable-decoder=libopenjpeg --disable-libopencv --disable-outdev=sdl2 --disable-podpages --disable-sndio --disable-stripping --enable-libaom --enable-avfilter --enable-avresample --enable-gcrypt --disable-gnutls --enable-openssl --enable-gpl --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx265 --enable-libzimg --enable-libxvid --enable-libzvbi --enable-nonfree --enable-opencl --enable-opengl --enable-postproc --enable-pthreads --enable-shared --enable-version3 --enable-libwebp --incdir=/usr/include/x86_64-linux-gnu --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --toolchain=hardened --enable-frei0r --enable-chromaprint --enable-libx264 --enable-libiec61883 --enable-libdc1394 --enable-vaapi --enable-libmfx --enable-libvmaf --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100


  


  I have the free amdgpu drivers (not amdgpu-pro), but I activated OpenCL just in case.

  


  I followed this tutorial.

  


  $ → glxinfo | grep OpenGL
OpenGL vendor string: AMD
OpenGL renderer string: Radeon RX550/550 Series (POLARIS12, DRM 3.40.0, 5.10.0-0.bpo.4-amd64, LLVM 11.0.1)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 20.3.4
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6 (Compatibility Profile) Mesa 20.3.4
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 20.3.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:





$ → clinfo
Number of platforms                               1
  Platform Name                                   Clover
  Platform Vendor                                 Mesa
  Platform Version                                OpenCL 1.1 Mesa 20.3.4
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_icd
  Platform Extensions function suffix             MESA

  Platform Name                                   Clover
Number of devices                                 1
  Device Name                                     Radeon RX550/550 Series (POLARIS12, DRM 3.40.0, 5.10.0-0.bpo.4-amd64, LLVM 11.0.1)
  Device Vendor                                   AMD
  Device Vendor ID                                0x1002
  Device Version                                  OpenCL 1.1 Mesa 20.3.4
  Driver Version                                  20.3.4
  Device OpenCL C Version                         OpenCL C 1.1
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Max compute units                               8
  Max clock frequency                             1183MHz
  Max work item dimensions                        3
  Max work item sizes                             256x256x256
  Max work group size                             256
  Preferred work group size multiple              64
  Preferred / native vector sizes
    char                                                16 / 16
    short                                                8 / 8
    int                                                  4 / 4
    long                                                 2 / 2
    half                                                 0 / 0        (n/a)
    float                                                4 / 4
    double                                               2 / 2        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
  Address bits                                    64, Little-Endian
  Global memory size                              3221225472 (3GiB)
  Error Correction support                        No
  Max memory allocation                           1717986918 (1.6GiB)
  Unified memory for Host and Device              No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       32768 bits (4096 bytes)
  Global Memory cache type                        None
  Image support                                   No
  Local memory type                               Local
  Local memory size                               32768 (32KiB)
  Max number of constant args                     16
  Max constant buffer size                        67108864 (64MiB)
  Max size of kernel argument                     1024
  Queue properties
    Out-of-order execution                        No
    Profiling                                     Yes
  Profiling timer resolution                      0ns
  Execution capabilities
    Run OpenCL kernels                            Yes
    Run native kernels                            No
  Device Extensions cl_khr_byte_addressable_store cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp64

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  Clover
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [MESA]
  clCreateContext(NULL, ...) [default]            Success [MESA]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX550/550 Series (POLARIS12, DRM 3.40.0, 5.10.0-0.bpo.4-amd64, LLVM 11.0.1)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX550/550 Series (POLARIS12, DRM 3.40.0, 5.10.0-0.bpo.4-amd64, LLVM 11.0.1)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX550/550 Series (POLARIS12, DRM 3.40.0, 5.10.0-0.bpo.4-amd64, LLVM 11.0.1)

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.12
  ICD loader Profile                              OpenCL 2.2


  


  This would not be a tearing problem, as no tearing is visible when playing videos and the TearFree driver policy is enabled.

  


  $ → xrandr --verbose | grep TearFree
    TearFree: on
    TearFree: on
    TearFree: on


  


• FFMPEG on Windows Server "Unknown encoder 'libfaac'" [duplicate]

  18 novembre 2020, par Jonathan

  I am doing this on a Windows server and is not already answered as per the other question on here on a Linux server.

  


  Im using FFMPEG on a project handling video uploads and I keep getting an issue with Videos with AAC audio encoding.

  


  I tried using aac and other aac encoders, but the windows version of FFMPEG says unknown encoders. I tried without setting an AudioCode so it might convert to native. But still the same.

  


  Please see the log output below :

  


  <pre>object(FFMpeg\Exception\RuntimeException)#35 (7) {&#xA;  ["message":protected]=>&#xA;  string(15) "Encoding failed"&#xA;  ["string":"Exception":private]=>&#xA;  string(0) ""&#xA;  ["code":protected]=>&#xA;  int(0)&#xA;  ["file":protected]=>&#xA;  string(108) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Media\AbstractVideo.php"&#xA;  ["line":protected]=>&#xA;  int(106)&#xA;  ["trace":"Exception":private]=>&#xA;  array(1) {&#xA;    [0]=>&#xA;    array(5) {&#xA;      ["file"]=>&#xA;      string(45) "C:\inetpub\wwwroot\dev\ffmpeg-lib\process.php"&#xA;      ["line"]=>&#xA;      int(35)&#xA;      ["function"]=>&#xA;      string(4) "save"&#xA;      ["class"]=>&#xA;      string(26) "FFMpeg\Media\AbstractVideo"&#xA;      ["type"]=>&#xA;      string(2) "->"&#xA;    }&#xA;  }&#xA;  ["previous":"Exception":private]=>&#xA;  object(Alchemy\BinaryDriver\Exception\ExecutionFailureException)#43 (9) {&#xA;    ["command":protected]=>&#xA;    string(397) "C:\ffmpeg\bin\ffmpeg.exe -y -ss 00:00:17.00 -i "temp/temp_20201110-100656_1080p-220mb.mp4" -t 00:00:52.00 -threads 12 -vcodec libx264 -acodec libfaac -b:v 1000k -refs 6 -coder 1 -sc_threshold 40 -flags &#x2B;loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 -b:a 128k -pass 1 -passlogfile "W:/TempIIS\ffmpeg-passes5fabd88bb6b0912dmm/pass-5fabd88bb6c3b" "temp/20201111-122651.mp4""&#xA;    ["errorOutput":protected]=>&#xA;    string(2301) "ffmpeg version git-2020-08-31-4a11a6f Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with gcc 10.2.1 (GCC) 20200805&#xA;  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --enable-librav1e --enable-libsvtav1 --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf&#xA;  libavutil      56. 58.100 / 56. 58.100&#xA;  libavcodec     58.101.101 / 58.101.101&#xA;  libavformat    58. 51.101 / 58. 51.101&#xA;  libavdevice    58. 11.101 / 58. 11.101&#xA;  libavfilter     7. 87.100 /  7. 87.100&#xA;  libswscale      5.  8.100 /  5.  8.100&#xA;  libswresample   3.  8.100 /  3.  8.100&#xA;  libpostproc    55.  8.100 / 55.  8.100&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;temp/temp_20201110-100656_1080p-220mb.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 19529854&#xA;    compatible_brands: mp42isom&#xA;    creation_time   : 2016-04-11T06:32:53.000000Z&#xA;  Duration: 00:02:25.98, start: 0.000000, bitrate: 13772 kb/s&#xA;    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)&#xA;    Metadata:&#xA;      creation_time   : 2016-04-11T06:32:53.000000Z&#xA;      handler_name    : Sound Media Handler&#xA;    Stream #0:1(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 13639 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)&#xA;    Metadata:&#xA;      creation_time   : 2016-04-11T06:32:53.000000Z&#xA;      handler_name    : Video Media Handler&#xA;      encoder         : AVC Coding&#xA;Unknown encoder &#x27;libfaac&#x27;&#xA;"&#xA;    ["message":protected]=>&#xA;    string(2750) "ffmpeg failed to execute command C:\ffmpeg\bin\ffmpeg.exe -y -ss 00:00:17.00 -i "temp/temp_20201110-100656_1080p-220mb.mp4" -t 00:00:52.00 -threads 12 -vcodec libx264 -acodec libfaac -b:v 1000k -refs 6 -coder 1 -sc_threshold 40 -flags &#x2B;loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 -b:a 128k -pass 1 -passlogfile "W:/TempIIS\ffmpeg-passes5fabd88bb6b0912dmm/pass-5fabd88bb6c3b" "temp/20201111-122651.mp4":&#xA;&#xA;Error Output:&#xA;&#xA; ffmpeg version git-2020-08-31-4a11a6f Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with gcc 10.2.1 (GCC) 20200805&#xA;  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --enable-librav1e --enable-libsvtav1 --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf&#xA;  libavutil      56. 58.100 / 56. 58.100&#xA;  libavcodec     58.101.101 / 58.101.101&#xA;  libavformat    58. 51.101 / 58. 51.101&#xA;  libavdevice    58. 11.101 / 58. 11.101&#xA;  libavfilter     7. 87.100 /  7. 87.100&#xA;  libswscale      5.  8.100 /  5.  8.100&#xA;  libswresample   3.  8.100 /  3.  8.100&#xA;  libpostproc    55.  8.100 / 55.  8.100&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;temp/temp_20201110-100656_1080p-220mb.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 19529854&#xA;    compatible_brands: mp42isom&#xA;    creation_time   : 2016-04-11T06:32:53.000000Z&#xA;  Duration: 00:02:25.98, start: 0.000000, bitrate: 13772 kb/s&#xA;    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)&#xA;    Metadata:&#xA;      creation_time   : 2016-04-11T06:32:53.000000Z&#xA;      handler_name    : Sound Media Handler&#xA;    Stream #0:1(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 13639 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)&#xA;    Metadata:&#xA;      creation_time   : 2016-04-11T06:32:53.000000Z&#xA;      handler_name    : Video Media Handler&#xA;      encoder         : AVC Coding&#xA;Unknown encoder &#x27;libfaac&#x27;&#xA;"&#xA;    ["string":"Exception":private]=>&#xA;    string(0) ""&#xA;    ["code":protected]=>&#xA;    int(0)&#xA;    ["file":protected]=>&#xA;    string(116) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\alchemy\binary-driver\src\Alchemy\BinaryDriver\ProcessRunner.php"&#xA;    ["line":protected]=>&#xA;    int(95)&#xA;    ["trace":"Exception":private]=>&#xA;    array(5) {&#xA;      [0]=>&#xA;      array(5) {&#xA;        ["file"]=>&#xA;        string(116) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\alchemy\binary-driver\src\Alchemy\BinaryDriver\ProcessRunner.php"&#xA;        ["line"]=>&#xA;        int(73)&#xA;        ["function"]=>&#xA;        string(18) "doExecutionFailure"&#xA;        ["class"]=>&#xA;        string(34) "Alchemy\BinaryDriver\ProcessRunner"&#xA;        ["type"]=>&#xA;        string(2) "->"&#xA;      }&#xA;      [1]=>&#xA;      array(5) {&#xA;        ["file"]=>&#xA;        string(117) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\alchemy\binary-driver\src\Alchemy\BinaryDriver\AbstractBinary.php"&#xA;        ["line"]=>&#xA;        int(207)&#xA;        ["function"]=>&#xA;        string(3) "run"&#xA;        ["class"]=>&#xA;        string(34) "Alchemy\BinaryDriver\ProcessRunner"&#xA;        ["type"]=>&#xA;        string(2) "->"&#xA;      }&#xA;      [2]=>&#xA;      array(5) {&#xA;        ["file"]=>&#xA;        string(117) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\alchemy\binary-driver\src\Alchemy\BinaryDriver\AbstractBinary.php"&#xA;        ["line"]=>&#xA;        int(136)&#xA;        ["function"]=>&#xA;        string(3) "run"&#xA;        ["class"]=>&#xA;        string(35) "Alchemy\BinaryDriver\AbstractBinary"&#xA;        ["type"]=>&#xA;        string(2) "->"&#xA;      }&#xA;      [3]=>&#xA;      array(5) {&#xA;        ["file"]=>&#xA;        string(108) "C:\inetpub\wwwroot\dev\ffmpeg-lib\ffmpeg-php\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Media\AbstractVideo.php"&#xA;        ["line"]=>&#xA;        int(96)&#xA;        ["function"]=>&#xA;        string(7) "command"&#xA;        ["class"]=>&#xA;        string(35) "Alchemy\BinaryDriver\AbstractBinary"&#xA;        ["type"]=>&#xA;        string(2) "->"&#xA;      }&#xA;      [4]=>&#xA;      array(5) {&#xA;        ["file"]=>&#xA;        string(45) "C:\inetpub\wwwroot\dev\ffmpeg-lib\process.php"&#xA;        ["line"]=>&#xA;        int(35)&#xA;        ["function"]=>&#xA;        string(4) "save"&#xA;        ["class"]=>&#xA;        string(26) "FFMpeg\Media\AbstractVideo"&#xA;        ["type"]=>&#xA;        string(2) "->"&#xA;      }&#xA;    }&#xA;    ["previous":"Exception":private]=>&#xA;    NULL&#xA;  }&#xA;}&#xA;</pre>

  


  Output of ffmpeg -encoders

  


       V..... a64multi             Multicolor charset for Commodore 64 (codec a64_multi)
 V..... a64multi5            Multicolor charset for Commodore 64, extended with 5th color (colram) (codec a64_multi5)
 V..... alias_pix            Alias/Wavefront PIX image
 V..... amv                  AMV Video
 V..... apng                 APNG (Animated Portable Network Graphics) image
 V..... asv1                 ASUS V1
 V..... asv2                 ASUS V2
 V..... libaom-av1           libaom AV1 (codec av1)
 V..... librav1e             librav1e AV1 (codec av1)
 V..... libsvtav1            SVT-AV1(Scalable Video Technology for AV1) encoder (codec av1)
 V..... avrp                 Avid 1:1 10-bit RGB Packer
 V..X.. avui                 Avid Meridien Uncompressed
 V..... ayuv                 Uncompressed packed MS 4:4:4:4
 V..... bmp                  BMP (Windows and OS/2 bitmap)
 VF.... cfhd                 GoPro CineForm HD
 V..... cinepak              Cinepak
 V..... cljr                 Cirrus Logic AccuPak
 V.S... vc2                  SMPTE VC-2 (codec dirac)
 VFS... dnxhd                VC3/DNxHD
 V..... dpx                  DPX (Digital Picture Exchange) image
 VFS... dvvideo              DV (Digital Video)
 V.S... ffv1                 FFmpeg video codec #1
 VF.... ffvhuff              Huffyuv FFmpeg variant
 V..... fits                 Flexible Image Transport System
 V..... flashsv              Flash Screen Video
 V..... flashsv2             Flash Screen Video Version 2
 V..... flv                  FLV / Sorenson Spark / Sorenson H.263 (Flash Video) (codec flv1)
 V..... gif                  GIF (Graphics Interchange Format)
 V..... h261                 H.261
 V..... h263                 H.263 / H.263-1996
 V.S... h263p                H.263+ / H.263-1998 / H.263 version 2
 V..... libx264              libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (codec h264)
 V..... libx264rgb           libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB (codec h264)
 V..... h264_amf             AMD AMF H.264 Encoder (codec h264)
 V..... h264_mf              H264 via MediaFoundation (codec h264)
 V..... h264_nvenc           NVIDIA NVENC H.264 encoder (codec h264)
 V..... h264_qsv             H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration) (codec h264)
 V..... nvenc                NVIDIA NVENC H.264 encoder (codec h264)
 V..... nvenc_h264           NVIDIA NVENC H.264 encoder (codec h264)
 V..... hap                  Vidvox Hap
 V..... libx265              libx265 H.265 / HEVC (codec hevc)
 V..... nvenc_hevc           NVIDIA NVENC hevc encoder (codec hevc)
 V..... hevc_amf             AMD AMF HEVC encoder (codec hevc)
 V..... hevc_mf              HEVC via MediaFoundation (codec hevc)
 V..... hevc_nvenc           NVIDIA NVENC hevc encoder (codec hevc)
 V..... hevc_qsv             HEVC (Intel Quick Sync Video acceleration) (codec hevc)
 VF.... huffyuv              Huffyuv / HuffYUV
 V..... jpeg2000             JPEG 2000
 VF.... libopenjpeg          OpenJPEG JPEG 2000 (codec jpeg2000)
 VF.... jpegls               JPEG-LS
 VF.... ljpeg                Lossless JPEG
 VF.... magicyuv             MagicYUV video
 VFS... mjpeg                MJPEG (Motion JPEG)
 V..... mjpeg_qsv            MJPEG (Intel Quick Sync Video acceleration) (codec mjpeg)
 V.S... mpeg1video           MPEG-1 video
 V.S... mpeg2video           MPEG-2 video
 V..... mpeg2_qsv            MPEG-2 video (Intel Quick Sync Video acceleration) (codec mpeg2video)
 V.S... mpeg4                MPEG-4 part 2
 V..... libxvid              libxvidcore MPEG-4 part 2 (codec mpeg4)
 V..... msmpeg4v2            MPEG-4 part 2 Microsoft variant version 2
 V..... msmpeg4              MPEG-4 part 2 Microsoft variant version 3 (codec msmpeg4v3)
 V..... msvideo1             Microsoft Video-1
 V..... pam                  PAM (Portable AnyMap) image
 V..... pbm                  PBM (Portable BitMap) image
 V..... pcx                  PC Paintbrush PCX image
 V..... pgm                  PGM (Portable GrayMap) image
 V..... pgmyuv               PGMYUV (Portable GrayMap YUV) image
 VF.... png                  PNG (Portable Network Graphics) image
 V..... ppm                  PPM (Portable PixelMap) image
 VF.... prores               Apple ProRes
 VF.... prores_aw            Apple ProRes (codec prores)
 VFS... prores_ks            Apple ProRes (iCodec Pro) (codec prores)
 V..... qtrle                QuickTime Animation (RLE) video
 V..... r10k                 AJA Kona 10-bit RGB Codec
 V..... r210                 Uncompressed RGB 10-bit
 V..... rawvideo             raw video
 V..... roqvideo             id RoQ video (codec roq)
 V..... rpza                 QuickTime video (RPZA)
 V..... rv10                 RealVideo 1.0
 V..... rv20                 RealVideo 2.0
 V..... sgi                  SGI image
 V..... snow                 Snow
 V..... sunrast              Sun Rasterfile image
 V..... svq1                 Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
 V..... targa                Truevision Targa image
 V..... libtheora            libtheora Theora (codec theora)
 VF.... tiff                 TIFF image
 VF.... utvideo              Ut Video
 V..... v210                 Uncompressed 4:2:2 10-bit
 V..... v308                 Uncompressed packed 4:4:4
 V..... v408                 Uncompressed packed QT 4:4:4:4
 V..... v410                 Uncompressed 4:4:4 10-bit
 V..... libvpx               libvpx VP8 (codec vp8)
 V..... libvpx-vp9           libvpx VP9 (codec vp9)
 V..... vp9_qsv              VP9 video (Intel Quick Sync Video acceleration) (codec vp9)
 V..... libwebp_anim         libwebp WebP image (codec webp)
 V..... libwebp              libwebp WebP image (codec webp)
 V..... wmv1                 Windows Media Video 7
 V..... wmv2                 Windows Media Video 8
 V..... wrapped_avframe      AVFrame to AVPacket passthrough
 V..... xbm                  XBM (X BitMap) image
 V..... xface                X-face image
 V..... xwd                  XWD (X Window Dump) image
 V..... y41p                 Uncompressed YUV 4:1:1 12-bit
 V..... yuv4                 Uncompressed packed 4:2:0
 VF.... zlib                 LCL (LossLess Codec Library) ZLIB
 V..... zmbv                 Zip Motion Blocks Video
 A..... aac                  AAC (Advanced Audio Coding)
 A..... aac_mf               AAC via MediaFoundation (codec aac)
 A..... ac3                  ATSC A/52A (AC-3)
 A..... ac3_fixed            ATSC A/52A (AC-3) (codec ac3)
 A..... ac3_mf               AC3 via MediaFoundation (codec ac3)
 A..... adpcm_adx            SEGA CRI ADX ADPCM
 A..... adpcm_argo           ADPCM Argonaut Games
 A..... g722                 G.722 ADPCM (codec adpcm_g722)
 A..... g726                 G.726 ADPCM (codec adpcm_g726)
 A..... g726le               G.726 little endian ADPCM ("right-justified") (codec adpcm_g726le)
 A..... adpcm_ima_apm        ADPCM IMA Ubisoft APM
 A..... adpcm_ima_qt         ADPCM IMA QuickTime
 A..... adpcm_ima_ssi        ADPCM IMA Simon & Schuster Interactive
 A..... adpcm_ima_wav        ADPCM IMA WAV
 A..... adpcm_ms             ADPCM Microsoft
 A..... adpcm_swf            ADPCM Shockwave Flash
 A..... adpcm_yamaha         ADPCM Yamaha
 A..... alac                 ALAC (Apple Lossless Audio Codec)
 A..... libopencore_amrnb    OpenCORE AMR-NB (Adaptive Multi-Rate Narrow-Band) (codec amr_nb)
 A..... libvo_amrwbenc       Android VisualOn AMR-WB (Adaptive Multi-Rate Wide-Band) (codec amr_wb)
 A..... aptx                 aptX (Audio Processing Technology for Bluetooth)
 A..... aptx_hd              aptX HD (Audio Processing Technology for Bluetooth)
 A..... comfortnoise         RFC 3389 comfort noise generator
 A..X.. dca                  DCA (DTS Coherent Acoustics) (codec dts)
 A..... eac3                 ATSC A/52 E-AC-3
 A..... flac                 FLAC (Free Lossless Audio Codec)
 A..... g723_1               G.723.1
 A..... libgsm               libgsm GSM (codec gsm)
 A..... libgsm_ms            libgsm GSM Microsoft variant (codec gsm_ms)
 A..X.. mlp                  MLP (Meridian Lossless Packing)
 A..... mp2                  MP2 (MPEG audio layer 2)
 A..... mp2fixed             MP2 fixed point (MPEG audio layer 2) (codec mp2)
 A..... libtwolame           libtwolame MP2 (MPEG audio layer 2) (codec mp2)
 A..... libmp3lame           libmp3lame MP3 (MPEG audio layer 3) (codec mp3)
 A..... libshine             libshine MP3 (MPEG audio layer 3) (codec mp3)
 A..... mp3_mf               MP3 via MediaFoundation (codec mp3)
 A..... nellymoser           Nellymoser Asao
 A..X.. opus                 Opus
 A..... libopus              libopus Opus (codec opus)
 A..... pcm_alaw             PCM A-law / G.711 A-law
 A..... pcm_dvd              PCM signed 16|20|24-bit big-endian for DVD media
 A..... pcm_f32be            PCM 32-bit floating point big-endian
 A..... pcm_f32le            PCM 32-bit floating point little-endian
 A..... pcm_f64be            PCM 64-bit floating point big-endian
 A..... pcm_f64le            PCM 64-bit floating point little-endian
 A..... pcm_mulaw            PCM mu-law / G.711 mu-law
 A..... pcm_s16be            PCM signed 16-bit big-endian
 A..... pcm_s16be_planar     PCM signed 16-bit big-endian planar
 A..... pcm_s16le            PCM signed 16-bit little-endian
 A..... pcm_s16le_planar     PCM signed 16-bit little-endian planar
 A..... pcm_s24be            PCM signed 24-bit big-endian
 A..... pcm_s24daud          PCM D-Cinema audio signed 24-bit
 A..... pcm_s24le            PCM signed 24-bit little-endian
 A..... pcm_s24le_planar     PCM signed 24-bit little-endian planar
 A..... pcm_s32be            PCM signed 32-bit big-endian
 A..... pcm_s32le            PCM signed 32-bit little-endian
 A..... pcm_s32le_planar     PCM signed 32-bit little-endian planar
 A..... pcm_s64be            PCM signed 64-bit big-endian
 A..... pcm_s64le            PCM signed 64-bit little-endian
 A..... pcm_s8               PCM signed 8-bit
 A..... pcm_s8_planar        PCM signed 8-bit planar
 A..... pcm_u16be            PCM unsigned 16-bit big-endian
 A..... pcm_u16le            PCM unsigned 16-bit little-endian
 A..... pcm_u24be            PCM unsigned 24-bit big-endian
 A..... pcm_u24le            PCM unsigned 24-bit little-endian
 A..... pcm_u32be            PCM unsigned 32-bit big-endian
 A..... pcm_u32le            PCM unsigned 32-bit little-endian
 A..... pcm_u8               PCM unsigned 8-bit
 A..... pcm_vidc             PCM Archimedes VIDC
 A..... real_144             RealAudio 1.0 (14.4K) (codec ra_144)
 A..... roq_dpcm             id RoQ DPCM
 A..X.. s302m                SMPTE 302M
 A..... sbc                  SBC (low-complexity subband codec)
 A..X.. sonic                Sonic
 A..X.. sonicls              Sonic lossless
 A..... libspeex             libspeex Speex (codec speex)
 A..X.. truehd               TrueHD
 A..... tta                  TTA (True Audio)
 A..X.. vorbis               Vorbis
 A..... libvorbis            libvorbis (codec vorbis)
 A..... wavpack              WavPack
 A..... libwavpack            (codec wavpack)
 A..... wmav1                Windows Media Audio 1
 A..... wmav2                Windows Media Audio 2
 S..... ssa                  ASS (Advanced SubStation Alpha) subtitle (codec ass)
 S..... ass                  ASS (Advanced SubStation Alpha) subtitle
 S..... dvbsub               DVB subtitles (codec dvb_subtitle)
 S..... dvdsub               DVD subtitles (codec dvd_subtitle)
 S..... mov_text             3GPP Timed Text subtitle
 S..... srt                  SubRip subtitle (codec subrip)
 S..... subrip               SubRip subtitle
 S..... text                 Raw text subtitle
 S..... webvtt               WebVTT subtitle
 S..... xsub                 DivX subtitles (XSUB)