On 21/07/15 17:49, Vangelis forthnet wrote:
On Tue Jul 21 16:28:36 BST 2015, Budgie wrote:
the end product is .flv
Hello Alastair :-)
By default, anything downloaded by rtmpdump ends up inside the Adobe FLV
container, with ".flv" as file extension!
gfv reports sampletype mp4a
Again, this is reported by rtmpdump ("INFO: sampletype mp4a", you should
also see: "INFO: audiocodecid mp4a") and this info refers to the
elementary audio stream inside the FLV container.
How do/can I I run it through ffmpeg to get .m4a files?
".m4a" is the file extension of MP4 files containing only an audio
stream inside the MP4 container; is that what you really want to do
(i.e. extract only the audio from the FLV file and put in within the MP4
container)? My guess is that you'd rather LOSSLESSLY REMUX the FLV file
to an MP4 file, keeping both video+audio streams...
Use ffmpeg to perform the remux:
ffmpeg -i foo.flv -c copy -bsf:a aac_adtstoasc foo.mp4
On the subject of ffmpeg, will this insert time stamps when
transcoding and how does one set the interval?
Pardon me, but I do not quite understand what you're saying here - my
command above does a lossless remux without transcoding - TRANSCODING is
not what you'd want because it is a source (and time) demanding
procedure - resort to transcoding in the event your hardware media
player does not support the H.264 AVC video codec (very unlikely...)
Regards from boiling hot Greece (30C inside, 38C outside...)
Vangelis.
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Hi Vangelis,
Just showing my ignorance and you have guessed my intentions correctly.
It is the MP4 container I was looking for. It now seems, however,
that I don't need it as the file plays fine on the renderer I am using.
The business about the time stamp reference is because I have a number
of radio gip downloads that were messed up due to an error with my set
up a couple of years back. As a result these play from start to finish
but I cannot fast forward to any point mid programme. Since they are 2
hours long this makes life difficult as I seldom have an uninterrupted 2
hours! My understanding is that time markers are missing but have no
idea if this is correct analysis or if it can be rectified. If you have
any suggestions they would be appreciated.
Many thanks for your reply.
Regards from wet and cool Scotland.
Budge
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