Paperclip-ffmpeg無法在Rails上工作

Question

我安裝了Paperclip-ffmpeg並試圖上傳一個flv文件，但似乎轉換文件時出現了一些問題。

我加入Paperclip.options[:command_path] = "/usr/bin/"（我用which ffmpeg路徑）我config/environments/development.rb文件，以下回形針，ffmpeg的GitHub的頁面上的說明。

這裏是我的模型subquestion.rb，其中包含一個名爲qflv回形針場：

class Subquestion < ActiveRecord::Base 
    belongs_to :question 
    has_many :qimages , :dependent => :destroy 

    has_attached_file :qflv, styles: { 
     medium: {geometry: "640*480", format: 'flv'}, 
     thumb: {geometry: "100*100#", format: 'jpg', time: 10} 
    }, processors: [:ffmpeg] 

這裏是我的_subquestion_fields.html.erb文件，其中用戶上傳視頻：

<%= f.file_field :qflv %> 

_subquestion_fields.html.erb是問題呈現。 html.erb文件：

<%= nested_form_for @question, :url => {:action => 'create_question'} do |f| %> 
     <%= f.fields_for :subquestions do |builder| %> 
     <%= render 'subquestion_fields', :f => builder %> 

這裏是錯誤消息的一部分：

WARNING: gnome-keyring:: couldn't connect to: /run/user/li/keyring-CsW4u8/pkcs11: No such file or directory 
ffmpeg version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers 
    built on Mar 30 2013 22:23:21 with gcc 4.7.2 
*** THIS PROGRAM IS DEPRECATED *** 
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. 
[flv @ 0x8ba50a0] Estimating duration from bitrate, this may be inaccurate 
Input #0, flv, from '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9.flv': 
    Metadata: 
    metadatacreator : modified by youku.com in 20111202 
    hasKeyframes : true 
    hasVideo  : true 
    hasAudio  : true 
    hasMetadata  : true 
    Duration: 00:05:25.03, start: 0.000000, bitrate: N/A 
    Stream #0.0: Video: h264 (High), yuv420p, 448x336 [PAR 1:1 DAR 4:3], 15 tbr, 1k tbn, 30 tbc 
    Stream #0.1: Audio: aac, 44100 Hz, stereo, s16 
Incorrect frame size 
Failed to set value '0x0' for option 's' 
WARNING: gnome-keyring:: couldn't connect to: /run/user/li/keyring-CsW4u8/pkcs11: No such file or directory 
ffmpeg version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers 
    built on Mar 30 2013 22:23:21 with gcc 4.7.2 
*** THIS PROGRAM IS DEPRECATED *** 
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. 
[flv @ 0x86490a0] Estimating duration from bitrate, this may be inaccurate 
Input #0, flv, from '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9.flv': 
    Metadata: 
    metadatacreator : modified by youku.com in 20111202 
    hasKeyframes : true 
    hasVideo  : true 
    hasAudio  : true 
    hasMetadata  : true 
    Duration: 00:05:25.03, start: 0.000000, bitrate: N/A 
    Stream #0.0: Video: h264 (High), yuv420p, 448x336 [PAR 1:1 DAR 4:3], 15 tbr, 1k tbn, 30 tbc 
    Stream #0.1: Audio: aac, 44100 Hz, stereo, s16 
Incompatible pixel format 'yuv420p' for codec 'mjpeg', auto-selecting format 'yuvj420p' 
[buffer @ 0x864c180] w:448 h:336 pixfmt:yuv420p 
[scale @ 0x8653840] w:448 h:336 fmt:yuv420p -> w:448 h:336 fmt:yuvj420p flags:0x4 
[crop @ 0x864dc20] w:448 h:336 -> w:0 h:0 
[crop @ 0x864dc20] Invalid too big or non positive size for width '0' or height '0' 
Error opening filters! 


Started POST "/test_geisinger/roots/questions/create" for 127.0.0.1 at 2013-07-27 23:12:31 -0400 
Processing by RootsController#create_question as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"EiJk5dBf1nL96BtUiKc0qALCg0Bj9mQ0dx9IodfYdO0=", "question"=>{"explanation"=>"flv", "choice_id"=>"8", "correct_selection_id"=>"32", "quiz_id"=>"10", "subquestions_attributes"=>{"0"=>{"subquestion_type"=>"flv", "_destroy"=>"false", "qflv"=>#<ActionDispatch::Http::UploadedFile:0x9d94640 @original_filename="03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE7.flv", @content_type="video/x-flv", @headers="Content-Disposition: form-data; name=\"question[subquestions_attributes][0][qflv]\"; filename=\"03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE7.flv\"\r\nContent-Type: video/x-flv\r\n", @tempfile=#<Tempfile:/tmp/RackMultipart20130727-1837-1f6g2s0>>}}}, "commit"=>"Submit"} 
[paperclip] [ffmpeg] ffmpeg -i "/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9.flv" 2>&1 
[paperclip] [ffmpeg] Command Success 
[paperclip] [ffmpeg] Making... 
[paperclip] [ffmpeg] Building Destination File: '03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9' + 'flv' 
[paperclip] [ffmpeg] Destination File Built 
[paperclip] [ffmpeg] Adding Geometry 
[paperclip] [ffmpeg] Extracting Target Dimensions 
[paperclip] [ffmpeg] Target Size is Available 
[paperclip] [ffmpeg] Keeping Aspect Ratio 
[paperclip] [ffmpeg] Resize 
[paperclip] [ffmpeg] Convert Options: 0x0 
[paperclip] [ffmpeg] Adding Format 
[paperclip] [ffmpeg] Adding Source 
[paperclip] [ffmpeg] Building Parameters 
[paperclip] [ffmpeg] -i :source -s 0x0 -y :dest 
Command :: ffmpeg -i '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9.flv' -s 0x0 -y '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l920130727-1837-11o3enh.flv' 
[paperclip] An error was received while processing: #<Paperclip::Error: error while processing video for 03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9: Command 'ffmpeg -i '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l9.flv' -s 0x0 -y '/tmp/03000201005171FC8274A20623ECA86B119768-56C7-7A62-DB7A-A4B599F64EE720130727-1837-13757l920130727-1837-11o3enh.flv'' returned 1. Expected 0 

可能有一些問題，所以PKCS11我發現這篇文章：

https://bugzilla.redhat.com/show_bug.cgi?id=783568

但我找不到/etc/xdg/autostart/gnome-keyring-*.desktop。

謝謝！

Answer 1

您爲什麼認爲這與PKCS11有關？看看錯誤消息：

Invalid too big or non positive size for width '0' or height '0' 

如果你看一下你生成的命令，它會嘗試視頻編碼的大小爲0 × 0像素：

ffmpeg -i ….flv -s 0x0 -y ….flv 

這也是什麼回形針告訴你：

[paperclip] [ffmpeg] Convert Options: 0x0 

您需要設置一個積極的尺寸爲視頻的任何是好的，但離開了-s完全，如果你不希望重新調整將是I​​DE al選項。我認爲有以下就足夠了：

has_attached_file :qflv, styles: { 
    medium: {geometry: "640x480", format: 'flv'}, 
    thumb: {geometry: "100x100#", format: 'jpg', time: 10} 
}, processors: [:ffmpeg] 

注意使用x而不是*指定尺寸。

---

不相關的問題，但請看看以下這行：

*** THIS PROGRAM IS DEPRECATED *** 

您使用一個破碎和名不副實的版本ffmpeg從Libav，不FFmpeg起源。自該版本發佈以來，已經修復了數百個錯誤，因此請考慮更新您的錯誤。看看FFmpeg download page有幾個選擇。