On Wed Oct 8 03:44:11 BST 2014, Nick Payne wrote:
Although the episode is the same time length as previous episodes,
the downloaded file is about 50% larger
(about 1.5Gb vs 1Gb for older episodes)
Hi Nick!
What you report is consistent with the file metadata from the beeb:
New Tricks - Series 11: 8. The English Defence ->
pid=b04l6zbp -> vpid=b04l6zbh ->
<media bitrate="2800" encoding="h264" expires="2014-11-05T22:40:00Z"
height="720" kind="video" media_file_size="1577950038"
service="pc_streaming_hd" type="video/mp4" width="1280">
file_size="1577950038" ~ 1.47 GiB
New Tricks - Series 11: 7. In Vino Veritas ->
pid=b04kmt0v -> vpid=b04kmt0n ->
<media bitrate="2800" encoding="h264" expires="2014-10-27T20:59:00Z"
height="720" kind="video" media_file_size="1042920810"
service="pc_streaming_hd" type="video/mp4" width="1280">
file_size="1042920810" ~ 0.97 GiB
For reasons only they know, the most recent episode
was encoded with an elevated video bitrate, hence
the substantially bigger file size.
The audio bitrate is usually (AAC-LC@) 96kbpsABR
for HD files, so file size is in essence controlled
by video bitrate...
Cheers
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