Okay, someone helped me somewhere.

I had to separate filters with commas:

    ffmpeg -i input.mpg -vf &quot;movie=watermark.png [logo]; [in][logo] overlay=W-w-10:H-h-10, fade=in:0:20 [out]&quot; output.mpg

This will apply fadein to both the watermark and the video.

Yes it is possible .

    ffmpeg.exe -i yourvideo.avi -vf &quot;[in] scale=iw/2:ih/2, pad=iw+40:ih+40:10:10 [top]; movie=yourLogoOrVideo.pngOraviEtc, scale=iw/2:ih/2 , fade=out:400:40:alpha=1 [bottom]; [top][bottom] overlay=PaddingFromTop:PaddingFromLeft [out]&quot; -f flv ff.flv





**Q:** Is there a better way to handle SqlExceptions? 

The below examples rely on interpreting the text in the message.  

**Eg1:** I have an existing try catch to handle if a table does not exist.  
*Ignore the fact that I could check if the table exists in the first place.*

    try
    {
    	//code
    }
    catch(SqlException sqlEx)
    {
            if (sqlEx.Message.StartsWith(&quot;Invalid object name&quot;))
            {
                //code
            }
            else
                throw;
    }

**Eg2:** without the try catch showing duplicate key exception

    if (sqlEx.Message.StartsWith(&quot;Cannot insert duplicate key row in object&quot;))
  

**Solution: The start of my SqlExceptionHelper**

    //-- to see list of error messages: select * from sys.messages where language_id = 1033 order by message_id
    public static class SqlExceptionHelper
    {
    	//-- rule: Add error messages in numeric order and prefix the number above the method

    	//-- 208: Invalid object name &#39;%.*ls&#39;.
    	public static bool IsInvalidObjectName(SqlException sex)
    	{ return (sex.Number == 208); }
    
    	//-- 2601: Cannot insert duplicate key row in object &#39;%.*ls&#39; with unique index &#39;%.*ls&#39;. The duplicate key value is %ls.
    	public static bool IsDuplicateKey(SqlException sex)
    	{ return (sex.Number == 2601); }
    }

How to catch a specific SqlException error?

When I specify `overflow-x: hidden` on an element which overflows both horizontally and vertically, the element gets a vertical scroll bar in addition to hiding the horizontally overflowing content. I have tried adding `overflow-y: visible` and even just `overflow: visible`, to no effect.

Am I misunderstanding what these properties do? I would think that `overflow-x` should not affect the vertical overflow at all.

This has happened on every browser I&#39;ve tried.

Here&#39;s a snippet which demonstrates the effect. I&#39;m using `&lt;pre&gt;` tags because they&#39;re an easy way to create overflowing content, but it seems to happen with any tag.

&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-css --&gt;

    pre {
      height: 40px;
      width: 150px;
      margin-bottom: 50px; /* We need this so they don&#39;t overlap. */
    }

    #x-hidden {
      overflow-x: hidden;
    }

    #y-visible {
      overflow-x: hidden;
      overflow-y: visible;
    }

    #visible {
      overflow: visible;
      overflow-x: hidden;
    }

&lt;!-- language: lang-html --&gt;

    &lt;pre&gt;
      Lorem ipsum dolor sit amet, consectetur adipiscing elit.
      Praesent bibendum lorem felis, sit amet sodales nunc gravida eget.
      Integer mollis quis magna quis vulputate.
      Cras aliquet convallis efficitur.
    &lt;/pre&gt;

    &lt;pre id=&quot;x-hidden&quot;&gt;
      Lorem ipsum dolor sit amet, consectetur adipiscing elit.
      Praesent bibendum lorem felis, sit amet sodales nunc gravida eget.
      Integer mollis quis magna quis vulputate.
      Cras aliquet convallis efficitur.
    &lt;/pre&gt;

    &lt;pre id=&quot;y-visible&quot;&gt;
      Lorem ipsum dolor sit amet, consectetur adipiscing elit.
      Praesent bibendum lorem felis, sit amet sodales nunc gravida eget.
      Integer mollis quis magna quis vulputate.
      Cras aliquet convallis efficitur.
    &lt;/pre&gt;

    &lt;pre id=&quot;visible&quot;&gt;
      Lorem ipsum dolor sit amet, consectetur adipiscing elit.
      Praesent bibendum lorem felis, sit amet sodales nunc gravida eget.
      Integer mollis quis magna quis vulputate.
      Cras aliquet convallis efficitur.
    &lt;/pre&gt;

&lt;!-- end snippet --&gt;

The [W3C spec][1] says:

&gt; The computed values of ‘overflow-x’ and ‘overflow-y’ are the same as their specified values, except that some combinations with ‘visible’ are not possible: if one is specified as ‘visible’ and the other is ‘scroll’ or ‘auto’, then ‘visible’ is set to ‘auto’.

But this makes no mention of the case when `overflow-x` or `overflow-y` is set to `hidden`, which to me implies that this combination is indeed meant to be possible.


  [1]: https://www.w3.org/TR/css3-box/#overflow-x

Setting overflow-x: hidden adds a vertical scrollbar

I have the need to apply fadein and overlay filters to a video. Is it possible to apply 2 filters at once?

I got:

    ffmpeg -i input.mpg -vf &quot;movie=watermark.png [logo]; [in][logo] overlay=W-w-10:H-h-10 [out]&quot; output.mpg

I&#39;m trying to add `fade=in:0:20`, but if I add a new `-vf` parameter, it will overwrite the preceding one, and if I add:

    -vf &quot;fade=in:0:20; movie=......&quot;

it won&#39;t work.

Is this possible or do I have to run FFmpeg twice?

Applying multiple filters at once with FFMPEG

I have the need to apply fadein and overlay filters to a video. Is it possible to apply 2 filters at once?
I got:
<pre><code class="hljs language-css">ffmpeg -i input.mpg -vf "movie=watermark.png [logo]; [in][logo] overlay=W-w-10:H-h-10 [out]" output.mpg
</code></pre>
I'm trying to add <code>fade=in:0:20</code>, but if I add a new <code>-vf</code> parameter, it will overwrite the preceding one, and if I add:
<pre><code class="hljs language-ini">-vf "fade=in:0:20; movie=......"
</code></pre>
it won't work.
Is this possible or do I have to run FFmpeg twice?

I am working on a WPF desktop application using the MVVM pattern.

I am trying to filter some items out of a `ListView` based on the text typed in a `TextBox`. I want the `ListView` items to be filtered as I change the text.

**I want to know how to trigger the filter when the filter text changes.**

The `ListView` binds to a `CollectionViewSource`, which binds to the `ObservableCollection` on my ViewModel. The `TextBox` for the filter text binds to a string on the ViewModel, with `UpdateSourceTrigger=PropertyChanged`, as it should be.

    &lt;CollectionViewSource x:Key=&quot;ProjectsCollection&quot;
                          Source=&quot;{Binding Path=AllProjects}&quot;
                          Filter=&quot;CollectionViewSource_Filter&quot; /&gt;
    
    &lt;TextBox Text=&quot;{Binding Path=FilterText, UpdateSourceTrigger=PropertyChanged}&quot; /&gt;
    
    &lt;ListView DataContext=&quot;{StaticResource ProjectsCollection}&quot;
              ItemsSource=&quot;{Binding}&quot; /&gt;

The `Filter=&quot;CollectionViewSource_Filter&quot;` links to an event handler in the code behind, which simply calls a filter method on the ViewModel.

Filtering is done when the value of FilterText changes - the setter for the FilterText property calls a FilterList method that iterates over the `ObservableCollection` in my ViewModel and sets a `boolean` FilteredOut property on each item ViewModel.

I know the FilteredOut property is updated when the filter text changes, but the List does not refresh. The `CollectionViewSource` filter event is only fired when I reload the UserControl by switching away from it and back again.

I&#39;ve tried calling `OnPropertyChanged(&quot;AllProjects&quot;)` after updating the filter info, but it did not solve my problem.
 (&quot;AllProjects&quot; is the `ObservableCollection` property on my ViewModel to which the `CollectionViewSource` binds.)

How can I get the `CollectionViewSource` to refilter itself when the value of the FilterText `TextBox` changes?

Many thanks

Trigger Filter on CollectionViewSource

In MVC we can decorate action methods with different filters like

    [HttpPost]
    [Authorize]
    public ActionResult mymethod(){}

`HttpPost` derives from `MethodSelectorAttribute` (probably indirectly) and the `Authorize` attribute inherits from `ActionFilterAttribute`. 

My question is: in which order are they executed in the MVC request pipeline? I tried to go search in MVC source code but failed to find the relevant code bits. 

In what order are filters executed in asp.net mvc

I am working with the dataset `LearnBayes`. For those that want to see the actual data: 

    install.packages(&#39;LearnBayes&#39;)

I am trying to filter out rows based on the value in the columns. For example, if the column value is &quot;water&quot;, then I want that row. If the column value is &quot;milk&quot;, then I don&#39;t want it. Ultimately, I am trying to filter out all individuals who&#39;s Drink column is &quot;water&quot;.




Filtering a data frame by values in a column

I need to restrict input into a TextField to integers. Any advice?


What is the recommended way to make a numeric TextField in JavaFX?

I have an OData service where I&#39;m trying to filter by a list of IDs; the SQL equivalent would be something like:

    SELECT * FROM MyTable WHERE TableId IN (100, 200, 300, 400)

The property I&#39;m trying to filter on is typed as an Int32. I&#39;ve tried the following, which gives me an error &quot;Operator &#39;add&#39; incompatible with operand types &#39;Edm.String&#39; and &#39;Edm.Int32&#39;&quot;:

    string ids = &quot;,100,200,300,400,&quot;;
    from m in provider.Media where ids.Contains(&quot;,&quot; + t.media_id + &quot;,&quot;)

as well as

    string ids = &quot;,100,200,300,400,&quot;;
    from m in provider.Media where ids.Contains(&quot;,&quot; + t.media_id.ToString() + &quot;,&quot;)

and

    string ids = &quot;,100,200,300,400,&quot;;
    from m in provider.Media where ids.Contains(&quot;,&quot; + Convert.ToString(t.media_id) + &quot;,&quot;)

and

    string ids = &quot;,100,200,300,400,&quot;;
    from m in provider.Media where ids.Contains(string.Concat(&quot;,&quot;, t.media_id, &quot;,&quot;))

As you can see, currently I&#39;m using LINQ to query the service.

Is there a way I can do what I&#39;m trying to, or am I stuck constructing a text filter and using AddQueryOption, and iterating through the list and manually adding &quot;or media_id eq 100&quot; clauses?

OData &quot;where ID in list&quot; query

To get a lot of information about a media file one can do

    ffmpeg -i &lt;filename&gt;

where it will output a lot of lines, one in particular

    Duration: 00:08:07.98, start: 0.000000, bitrate: 2080 kb/s

I would like to output only `00:08:07.98`, so I try

    ffmpeg -i file.mp4 | grep Duration| sed &#39;s/Duration: \(.*\), start/\1/g&#39;

But it prints everything, and not just the length.

Even `ffmpeg -i file.mp4 | grep Duration` outputs everything.

How do I get just the duration length?




How to extract duration time from ffmpeg output?

The [ffmpeg][1] is cross-platform and very powerful software to handle video/audio or to stream it.
On Linux ffmpeg can capture X11 screen with a command below:

    ffmpeg -f x11grab -r 25 -s cif -i :0.0 out.mpeg

But is it possible to grab Windows Desktop with ffmpeg?


  [1]: http://www.ffmpeg.org

Capture Windows screen with ffmpeg

After looking around the web, I found no way to generate a WebM video. I see drivers for Windows and QuickTime, but no evidence that the most common utility FFmpeg is being supported.

Is there any open source converter that produces WebM?


How to create a WebM video file?

I&#39;m trying to concatenate two mp4 files using ffmpeg.  I need this to be an automatic process hence why I chose ffmpeg.  I&#39;m converting the two files into `.ts` files and then concatenating them and then trying to encode that concatenated `.ts` file.  The files are `h264` and `aac` encoded and I&#39;m hoping to keep the quality the same or as close to original as possible.

    ffmpeg -i part1.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part1.ts
    ffmpeg -i part2.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part2.ts
    cat part1.ts part2.ts &gt; parts.ts
    ffmpeg -y -i parts.ts -acodec copy -ar 44100 -ab 96k -coder ac -vbsf h264_mp4toannexb parts.mp4

Unfortunately I&#39;m getting the following error message coming back from ffmpeg during encoding:

    [h264 @ 0x1012600]sps_id out of range
    [h264 @ 0x1012600]non-existing SPS 0 referenced in buffering period
    [h264 @ 0x1012600]sps_id out of range
    [h264 @ 0x1012600]non-existing SPS 0 referenced in buffering period
    [NULL @ 0x101d600]error, non monotone timestamps 13779431 &gt;= 13779431kbits/s    
    av_interleaved_write_frame(): Error while opening file

This happens about half way through encoding which makes me think that you can&#39;t concat two .ts files together and have it work.

How to concatenate two MP4 files using FFmpeg?

Every time I try to get some information about my video files with ffmpeg, it pukes a lot of useless information mixed with good things.

I&#39;m using `ffmpeg -i name_of_the_video.mpg`.

There are any possibilities to get that in a friendly way? I mean JSON would be great (and even ugly XML is fine).

By now, I made my application parse the data with regex but there are lots of nasty corners that appear on some specific video files. I fixed all that I encountered, but there may be more.

I wanted something like:

    {
      &quot;Stream 0&quot;: {
         &quot;type&quot;: &quot;Video&quot;,
         &quot;codec&quot;: &quot;h264&quot;,
         &quot;resolution&quot;: &quot;720x480&quot;
      },
      &quot;Stream 1&quot;: {
         &quot;type&quot;: &quot;Audio&quot;,
         &quot;bitrate&quot;: &quot;128 kbps&quot;,
         &quot;channels&quot;: 2
      }
    }

Content Type	Original Author	Original Content on Stackoverflow
Question	Parziphal	View Question on Stackoverflow
Solution 1 - Filter	Parziphal	View Answer on Stackoverflow
Solution 2 - Filter	Emre Karataşoğlu	View Answer on Stackoverflow

Applying multiple filters at once with FFMPEG

Filter Problem Overview

Filter Solutions

Solution 1 - Filter

Solution 2 - Filter

Setting overflow-x: hidden adds a vertical scrollbar

How to catch a specific SqlException error?

Attributions