Problem converting audio formars via ffmpeg with C#

Question

0.00/5 (No votes)

See more:

Hello huy,

I want to convert aac format to mp3 using the ffmpeg.exe.
I found its easy and no problem.
But I was caught in a trap when I wanted to save the output to specific directory.

C#

private const string FffmpegArguments = "-acodec mp3 -ac 2 -ab 160k";


 foreach (InputFile inputFile in this.inputFiles)
            {
                string input = Path.Combine(inputFile.Location, inputFile.Name);

                string output = Path.Combine(
                    inputFile.Location,
                    Path.GetFileNameWithoutExtension(inputFile.Name) + "." + OutputExt);

                ProcessStartInfo startInfo = new ProcessStartInfo(
                        "ffmpeg.exe",
                        string.Format(@" -i ""{0}"" {1} ""{2}""", input, FffmpegArguments, output))
                {
                WindowStyle = ProcessWindowStyle.Hidden,
                UseShellExecute = false,
                RedirectStandardInput = true,
                RedirectStandardOutput = true,
                RedirectStandardError = true,
                CreateNoWindow = true
                };

                Process proc = new Process { StartInfo = startInfo };

                proc.Start();
            }

It saves the output but its damaged what seems to be the problem?

When I try to open the output mp3 I get this :
Output mp3 file

Posted 13-Jun-14 2:45am

Zhivko Kabaivanov

Updated 13-Jun-14 3:20am

v4

Add a Solution

Comments

[no name] 13-Jun-14 9:01am

The "output error" is a link to your incomplete question?

Zhivko Kabaivanov 13-Jun-14 9:07am

Nope, I want to have successfull convertion

Sergey Alexandrovich Kryukov 13-Jun-14 9:18am

What corruption? Why redirecting anything when you don't actually use redirected strings?

Attention: to reply, reply to the comment you want to reply, otherwise we won't get notifications.

—SA

Zhivko Kabaivanov 13-Jun-14 9:20am

Now its ok

Sergey Alexandrovich Kryukov 13-Jun-14 9:32am

I though it would work: I could not find essential mistakes.
The only somewhat incorrect piece is + '.' +...
It's the best to avoid using multiple string concatenation (strings are immutable! do I need to explain the consequence?) and hard-coded '.'. Use ChangeExtension method instead.
—SA

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

phil.o · Answer 1 · 2014-06-13T05:42:00

Solution 1

As Sergey stated, I would rather use:

C#

UseShellExecute = true,
RedirectStandardInput = false,
RedirectStandardOutput = false,
RedirectStandardError = false,

and see if it does the trick.

Posted 13-Jun-14 5:42am

phil.o