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-rw-r--r--youtube_dl/downloader/ism.py3
1 files changed, 1 insertions, 2 deletions
diff --git a/youtube_dl/downloader/ism.py b/youtube_dl/downloader/ism.py
index 5f6f9faef..9b001ecff 100644
--- a/youtube_dl/downloader/ism.py
+++ b/youtube_dl/downloader/ism.py
@@ -98,7 +98,7 @@ def write_piff_header(stream, params):
if is_audio:
smhd_payload = s88.pack(0) # balance
- smhd_payload = u16.pack(0) # reserved
+ smhd_payload += u16.pack(0) # reserved
media_header_box = full_box(b'smhd', 0, 0, smhd_payload) # Sound Media Header
else:
vmhd_payload = u16.pack(0) # graphics mode
@@ -126,7 +126,6 @@ def write_piff_header(stream, params):
if fourcc == 'AACL':
sample_entry_box = box(b'mp4a', sample_entry_payload)
else:
- sample_entry_payload = sample_entry_payload
sample_entry_payload += u16.pack(0) # pre defined
sample_entry_payload += u16.pack(0) # reserved
sample_entry_payload += u32.pack(0) * 3 # pre defined