WAVE files unplayable if inturrupted during recording process

[gmvoeth]

Summary of the bug:
How to reproduce:

% ffmpeg -i input ... output
ffmpeg version
built on ...

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

[gmvoeth]

Win7x64 Batch Commands in use when problem shows

[Carl Eugen Hoyos]

Please provide your failing command line (no script) including the complete, uncut console output and please explain in what situation you get a broken output file.

[gmvoeth]

While Running the WAVE command if a power interruption occurs
OR I close the batch command windows before completion of the
recording, the wave file will be unplayable and must be deleted
loosing all data. I am aware that good data up to the loss of power
is still present within the file, but, the file will not open or play
most probably because a proper header was not written to the
prematurely closed file. This can most likely be fixed by opening
the wave file entirely and writing the header prior to writing the
data to the file. You already know everything you need to know
to write a good header. The file type and -t command and sample rate and bit rate sets the ultimate file size of any pcm uncompressed format and can be written right away.
However, not all compiler programs are able to open empty files on a disk.
The fix for this problem requires the opening of an empty file with whatever data is already on the disk to its final size at closing time, the data being written to be the only data inserted later. COMPLETE HEADER FIRST, DATA LAST, UNCOMPRESSED PCM WAVE FILE. Then, if a power failure occurs the file should be readable even if the data is not right, it will be good up to power failure with garbage at the file end. But still playable. I hope you understand what I am trying to say.

[gmvoeth]

Since there is a power loss there will be no recovery of the error, there is no need of error to understand what I am saying. You simply need to open the whole file and write the entire header prior to insertion of data within the previously opened file. However, NOT ALL COMPILER PROGRAMS ARE ABLE TO OPEN AN EMPTY FILE. An empty file allows the reading of previously deleted data on the HDD and is a security issue to some companies providing the compiler. You need a compiler created by programmers not paranoid about the laws.

[Carl Eugen Hoyos]

Please provide the ffmpeg command line and the complete, uncut console output until you kill the process to make this a valid ticket.
(The wav header is of course written before the actual audio data is written to the file and killing a ffmpeg process writing a wav file does not invalidate the output file here.)

[Carl Eugen Hoyos]

Should be fixed in c2b0ce70