seek

I'm writing a video editor , and I need to seek to exact frame, knowing the frame number . Other posts on stackoverflow told me that ffmpeg may give me a few broken frames after seeking, which is not a problem for playback but a big problem for video editors. And I need to seek by frame number , not by time, which will become inaccurate when converted to frame number. I've read dranger's tuts (which is outdated now), and end up with: av_seek_frame(fmt_ctx, video_stream_id, frame, AVSEEK_FLAG_ANY); It always seek to frame No. 0 , and always return 0 which means success. Then I tried to read

I have a SeekBar , it displays correctly MediaPlayer progress. However, I have troubles with seeking - if I seek scroll box somewhere it just returns on the position where audio file is playing. public class EntityPageActivity extends Activity implements Runnable, OnClickListener, OnSeekBarChangeListener{ private SeekBar seekBar; private Button startMedia; private Button pauseMedia; private MediaPlayer mp; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.entity_page); AudioControl(); } public void AudioControl(){ seekBar =

Python's f.tell doesn't work as I expected when you iterate over a file with f.next(): >>> f=open(".bash_profile", "r") >>> f.tell() 0 >>> f.next() "alias rm='rm -i'\n" >>> f.tell() 397 >>> f.next() "alias cp='cp -i'\n" >>> f.tell() 397 >>> f.next() "alias mv='mv -i'\n" >>> f.tell() 397 Looks like it gives you the position of the buffer rather than the position of what you just got with next(). I've previously used the seek/tell trick to rewind one line when iterating over a file with readline(). Is there a way to rewind one line when using next()? Omnifarious No. I would make an adapter that

I am trying to work with FileStream.Seek to quickly jump to a line and read it. However, I am not getting the right results. I have tried to look at this for a while and can't understand what I am doing wrong. Environment: OS: Windows 7 Framework: .NET 4.0 IDE: Visual C# Express 2010 Sample Data in file location: C:\Temp\Temp.txt 0001|100!2500 0002|100!2500 0003|100!2500 0004|100!2500 0005|100!2500 0006|100!2500 0007|100!2500 0008|100!2500 0009|100!2500 0010|100!2500 The code: class PaddedFileSearch { private int LineLength { get; set; } private string FileName { get; set; } public

I've written a code in Python that goes through the file, extracts all numbers, adds them up. I have to now write the 'total' (an integer) at a particular spot in the file that says something something something...Total: __00__ something something . I have to write the total that I have calculated exactly after the Total: __ part which would mean the resulting line would change to, for example: something something something...Total: __35__ something something . So far I have this for the write part: import re f1 = open("filename.txt", 'r+') for line in f1: if '__' in line and 'Total:' in line:

is there anyway to make a file inside a zip file seekable in Python without reading it to memory? I tried the obvious procedure but I get an error since the file is not seekable: In [74]: inputZipFile = zipfile.ZipFile("linear_g_LAN2A_F_3keV_1MeV_30_small.zip", 'r') In [76]: inputCSVFile = inputZipFile.open(inputZipFile.namelist()[0], 'r') In [77]: inputCSVFile Out[77]: <zipfile.ZipExtFile at 0x102f5fad0> In [78]: inputCSVFile.se inputCSVFile.seek inputCSVFile.seekable In [78]: inputCSVFile.seek(0) --------------------------------------------------------------------------- UnsupportedOperation

Is it possible to seek to a particular point in html5 video displayed in a web page? I mean ,can I input a particular time value (say 01:20:30:045 ) and have the player control (slider) move to that point and play from that point onwards? In older version of mozilla vlcplugin I think this is possible by seek(seconds,is_relative) method..but I would like to know if this is possible in html video. Edit: I created the page with video and added javascript as below.When I click on the link ,it displays the time of click..but it doesn't increment the play location..but continues to play normally.

I have a temporary file with some content and a python script generating some output to this file. I want this to repeat N times, so I need to reuse that file (actually array of files). I'm deleting the whole content, so the temp file will be empty in the next cycle. For deleting content I use this code: def deleteContent(pfile): pfile.seek(0) pfile.truncate() pfile.seek(0) # I believe this seek is redundant return pfile tempFile=deleteContent(tempFile) My question is: Is there any other (better, shorter or safer) way to delete the whole content without actually deleting the temp file from