On Fri Nov 7 14:12:27 GMT 2014, SquarePenguin wrote:
After download it transcodes
(I think that's the right word) the flv to mp4
With respect SP, "transcodes" refers to change
of video and/or audio codec (from one codec to
another codec - this involves decoding the first
codec and encode with a different codec, e.g.
WMV+WMA -> Xvid+MP3). This is a time
consuming and resource heavy process.
What GiP does with video files is a simple
change of container formats, from the Adobe
proprietary FLash Video container to the more
compatible with standalone players MP4 container;
I think remux (short for re-multiplex) is the term
that better describes this...
size= 116kB time=00:00:07.39 bitrate= 129.0kbits/s
size= 163kB time=00:00:10.34 bitrate= 128.7kbits/s
Aren't those the transcoding rate indicators?
128kbps is the mean value of the bitrate of the
flashaacstd audio mode; most probably, this is
ffmpeg output from the remuxing process of the
initial FLV container to the MP4 one (which,
for audio streams, uses the Apple introduced
.m4a file extension).
Unless the OP (CJB) has --aactomp3 in his
"options" file, in which case it should be (as you say)
ffmpeg output from the "transcoding" process
of the AAC-LC audio stream (contained in the
FLV file) to the end MP3 audio stream (GiP
by default encodes to MP3@128kbps CBR).
Cheers,
Vangelis.
_______________________________________________
get_iplayer mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/get_iplayer
