[downloader/hls] Ask ffmpeg to quit when interrupting youtube-dl with 'Ctrl+C' (#8252)

Otherwise the mp4 file can't be played.

1 files changed, 10 insertions, 1 deletions

diff --git a/youtube_dl/downloader/hls.py b/youtube_dl/downloader/hls.py
index d186d402d..10b83c6b2 100644
--- a/youtube_dl/downloader/hls.py
+++ b/youtube_dl/downloader/hls.py
@@ -46,7 +46,16 @@ class HlsFD(FileDownloader):
 
         self._debug_cmd(args)
 
-        retval = subprocess.call(args, stdin=subprocess.PIPE)
+        proc = subprocess.Popen(args, stdin=subprocess.PIPE)
+        try:
+            retval = proc.wait()
+        except KeyboardInterrupt:
+            # subprocces.run would send the SIGKILL signal to ffmpeg and the
+            # mp4 file couldn't be played, but if we ask ffmpeg to quit it
+            # produces a file that is playable (this is mostly useful for live
+            # streams)
+            proc.communicate(b'q')
+            raise
         if retval == 0:
             fsize = os.path.getsize(encodeFilename(tmpfilename))
             self.to_screen('\r[%s] %s bytes' % (args[0], fsize))