Graham, > On Jun 25, 2016, at 23:37, Graham Cox <graham....@bigpond.com> wrote: > > HI all, > > I am using NSTask to wrap ffmpeg, the video conversion utility. > > I am able to invoke ffmpeg alright, but it’s unclear how the argument list > should be passed through NSTask. I tried making my various arguments into one > big string, but ffmeg doesn’t parse it, instead writing an error. > > Here’s my code: > > NSString* execPath = [[[self class] ffMPEGURL] path]; > > NSString* argString = [NSString stringWithFormat:@"-i \"%@\" -c copy %@", > [url absoluteString], [self.outputFileURL absoluteString]]; > > self.ffMPEGTask = [NSTask launchedTaskWithLaunchPath:execPath > arguments:@[argString]];
I believe you would pass the args to NSTask as follows. self.ffMPEGTask = [NSTask launchedTaskWithLaunchPath:execPath arguments:@[@"-i", [url absoluteString], @"-c", [self.outputFileURL absoluteString]]]; Type this in mail so it may not be exactly correct, but you get the idea. Each token in your argument list is put in the argument array individually. Sandor > > > What the argument string should look like is: > > -i <source url> -c copy <dest file> > > > ffmpeg responds: > > Unrecognized option 'i "http://<the stream url>" -c copy file:///<destination > file>'. > Error splitting the argument list: Option not found > > > Obviously I need to pass the arguments differently, but it’s not clear what I > need to do. > > —Graham > > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/admin.szatmari.net%40gmail.com > > This email sent to admin.szatmari....@gmail.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
