Why does ffmpeg stop randomly in the middle of a process?
- by acidzombie24
ffmpeg feels like its taking a long time. I then look at my output file and i see it stops between 6 and 8mbs. A fully encoded file is about 14mb. Why does ffmpeg stop? My code locks up on StandardOutput.ReadToEnd();. I had to kill the process (after seeing it not move for more then 10 seconds when i see it update every second previously) then i get the results of stdout and err. stdout is "" stderr is below.
The output msg shows the filesize ended. I also see a drop in my CPU usage when it stops. I copyed the argument from visual studios. CD to the same working directory and ran the cmd (bin/ffmpeg) and pasted the argument. It was able to complete.
int soundProcess(string infn, string outfn)
{
string aa, aa2;
aa = aa2 = "DEAD";
var app = new Process();
app.StartInfo.UseShellExecute = false;
app.StartInfo.RedirectStandardOutput = true;
app.StartInfo.RedirectStandardError = true;
//*/
app.StartInfo.FileName = @"bin\ffmpeg.exe";
app.StartInfo.Arguments = string.Format(@"-i ""{0}"" -ab 192k -y {2} ""{1}""", infn, outfn, param);
app.Start();
try
{
app.PriorityClass = ProcessPriorityClass.BelowNormal;
}
catch (Exception ex)
{
if (!Regex.IsMatch(ex.Message, @"Cannot process request because the process .*has exited"))
throw ex;
}
aa = app.StandardOutput.ReadToEnd();
aa2 = app.StandardError.ReadToEnd();
app.WaitForExit();
if (aa2.IndexOf("could not find codec parameters") != -1)
return 1;
else if (aa == "DEAD" || aa2 == "DEAD")
return -1;
else if (aa2.Length != 0)
return -2;
else
return 0;
}
The output of stderr. stdout is empty.
FFmpeg version SVN-r15815, Copyright (c) 2000-2008 Fabrice Bellard, et al.
configuration: --enable-memalign-hack --enable-postproc --enable-swscale --enable-gpl --enable-libfaac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libxvid --disable-ffserver --disable-vhook --enable-avisynth --enable-pthreads
libavutil 49.12. 0 / 49.12. 0
libavcodec 52. 3. 0 / 52. 3. 0
libavformat 52.23. 1 / 52.23. 1
libavdevice 52. 1. 0 / 52. 1. 0
libswscale 0. 6. 1 / 0. 6. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Nov 13 2008 10:28:29, gcc: 4.2.4 (TDM-1 for MinGW)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\dev\src\trunk\prjname\prjname\App_Data/temp/m/o/6304266424778814852':
Duration: 00:12:53.36, start: 0.000000, bitrate: 154 kb/s
Stream #0.0(und): Audio: aac, 44100 Hz, stereo, s16
Output #0, ipod, to 'C:\dev\src\trunk\prjname\prjname\App_Data\temp\m\o\2.m4a':
Stream #0.0(und): Audio: libfaac, 44100 Hz, stereo, s16, 192 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
size= 87kB time=4.74 bitrate= 150.7kbits/s
size= 168kB time=9.06 bitrate= 151.9kbits/s
size= 265kB time=14.28 bitrate= 151.8kbits/s
size= 377kB time=20.29 bitrate= 152.1kbits/s
size= 487kB time=26.22 bitrate= 152.1kbits/s
size= 594kB time=32.02 bitrate= 152.1kbits/s
size= 699kB time=37.64 bitrate= 152.1kbits/s
size= 808kB time=43.54 bitrate= 152.0kbits/s
size= 930kB time=50.09 bitrate= 152.2kbits/s
size= 1058kB time=57.05 bitrate= 152.0kbits/s
size= 1193kB time=64.23 bitrate= 152.1kbits/s
size= 1329kB time=71.63 bitrate= 152.0kbits/s
size= 1450kB time=78.16 bitrate= 152.0kbits/s
size= 1578kB time=85.05 bitrate= 152.0kbits/s
size= 1706kB time=92.00 bitrate= 152.0kbits/s
size= 1836kB time=98.94 bitrate= 152.0kbits/s
size= 1971kB time=106.25 bitrate= 151.9kbits/s
size= 2107kB time=113.57 bitrate= 152.0kbits/s
size= 2214kB time=119.33 bitrate= 152.0kbits/s
size= 2345kB time=126.39 bitrate= 152.0kbits/s
size= 2479kB time=133.56 bitrate= 152.0kbits/s
size= 2611kB time=140.76 bitrate= 152.0kbits/s
size= 2745kB time=147.91 bitrate= 152.1kbits/s
size= 2880kB time=155.20 bitrate= 152.0kbits/s
size= 3013kB time=162.40 bitrate= 152.0kbits/s
size= 3146kB time=169.58 bitrate= 152.0kbits/s
size= 3277kB time=176.61 bitrate= 152.0kbits/s
size= 3412kB time=183.90 bitrate= 152.0kbits/s
size= 3540kB time=190.80 bitrate= 152.0kbits/s
size= 3670kB time=197.81 bitrate= 152.0kbits/s
size= 3805kB time=205.08 bitrate= 152.0kbits/s
size= 3932kB time=211.93 bitrate= 152.0kbits/s
size= 4052kB time=218.38 bitrate= 152.0kbits/s
size= 4171kB time=224.82 bitrate= 152.0kbits/s
size= 4277kB time=230.55 bitrate= 152.0kbits/s
size= 4378kB time=235.96 bitrate= 152.0kbits/s
size= 4486kB time=241.79 bitrate= 152.0kbits/s
size= 4592kB time=247.50 bitrate= 152.0kbits/s
size= 4698kB time=253.21 bitrate= 152.0kbits/s
size= 4804kB time=258.95 bitrate= 152.0kbits/s
size= 4906kB time=264.41 bitrate= 152.0kbits/s
size= 5012kB time=270.09 bitrate= 152.0kbits/s
size= 5118kB time=275.85 bitrate= 152.0kbits/s
size= 5234kB time=282.10 bitrate= 152.0kbits/s
size= 5331kB time=287.39 bitrate= 151.9kbits/s
size= 5445kB time=293.55 bitrate= 152.0kbits/s
size= 5555kB time=299.40 bitrate= 152.0kbits/s
size= 5665kB time=305.37 bitrate= 152.0kbits/s
size= 5766kB time=310.80 bitrate= 152.0kbits/s
size= 5876kB time=316.70 bitrate= 152.0kbits/s
size= 5984kB time=322.50 bitrate= 152.0kbits/s
size= 6094kB time=328.49 bitrate= 152.0kbits/s
size= 6212kB time=334.76 bitrate= 152.0kbits/s
size= 6327kB time=340.99 bitrate= 152.0kbits/s
