diff options
Diffstat (limited to 'yt_dlp/downloader/ism.py')
| -rw-r--r-- | yt_dlp/downloader/ism.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/yt_dlp/downloader/ism.py b/yt_dlp/downloader/ism.py index 103064df1..07d74aef0 100644 --- a/yt_dlp/downloader/ism.py +++ b/yt_dlp/downloader/ism.py @@ -118,8 +118,7 @@ def write_piff_header(stream, params): vmhd_payload += u16.pack(0) * 3 # opcolor media_header_box = full_box(b'vmhd', 0, 1, vmhd_payload) # Video Media Header elif stream_type == 'text': - sthd_payload = u16.pack(0) * 2 - media_header_box = full_box(b'sthd', 0, 1, sthd_payload) # Subtitle Media Header + media_header_box = full_box(b'sthd', 0, 0, b'') # Subtitle Media Header else: assert False minf_payload = media_header_box @@ -173,6 +172,14 @@ def write_piff_header(stream, params): sample_entry_box = box(b'avc1', sample_entry_payload) # AVC Simple Entry else: assert False + elif stream_type == 'text': + if fourcc == 'TTML': + sample_entry_payload += b'http://www.w3.org/ns/ttml\0' # namespace + sample_entry_payload += b'\0' # schema location + sample_entry_payload += b'\0' # auxilary mime types(??) + sample_entry_box = box(b'stpp', sample_entry_payload) + else: + assert False else: assert False stsd_payload += sample_entry_box |