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-rw-r--r--youtube_dl/downloader/external.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/youtube_dl/downloader/external.py b/youtube_dl/downloader/external.py
index bdd3545a2..127a92d20 100644
--- a/youtube_dl/downloader/external.py
+++ b/youtube_dl/downloader/external.py
@@ -270,6 +270,10 @@ class FFmpegFD(ExternalFD):
args += ['-rtmp_live', 'live']
args += ['-i', url, '-c', 'copy']
+
+ if self.params.get('test', False):
+ args += ['-fs', compat_str(self._TEST_FILE_SIZE)] # -fs limit_size (output), expressed in bytes
+
if protocol in ('m3u8', 'm3u8_native'):
if self.params.get('hls_use_mpegts', False) or tmpfilename == '-':
args += ['-f', 'mpegts']