Ignore error when there's no video file
Ignore error when there's no video file

If no data was sent to the encoder (video encoder killed immediately
after spawn, for example), no video file will be created. This isn't
an error.

leonid-shevtsov/headless,therealjessesanford/headless,ducthanh/headless,skateman/headless,marxarelli/headless,ynagorny/headless,djanowski/headless,reiz/headless