On 11/03/16 12:17, Peter Alefounder wrote:
Gordon Scott asked:
Ben Parsonage said:
I have a hypothesis that you are producing VBR mp3s that your player
does not support.
I think it does. However, I don't know enough about this to understand
how a file can be both, say, 128kb/s and VBR.
There are at least 2 diffrent ways for mp3 to cope with vbr. Lame man has some info on this. This could be why a sansa clip could read some but not all (complete guess work on my part) . If lame is available you could try:
Flac -> wav -> mp3 old vbr
. . . . . . . . . . .-> mp3 new vbr
. . . . . . . . . . - > mp3 cbr
(Personally for this I would use lame, but using avconv or ffmpeg should work.)
On a single file by hand, see what works and what doesn't. Then when it works try out a few qualities to see what is acceptable.
VBR can have the ABR (average bit rate) set. This true to maximise quality by allowing "simpler sections to be encoded with a low but rate and a more complex section can use more but over the file it should preserve a constant size/period
On 11 March 2016 12:34:06 GMT+00:00, Chris Liddell <cjl@???> wrote:
>On 11/03/16 12:17, Peter Alefounder wrote:
>> Gordon Scott asked:
>> Ben Parsonage said:
>>> I have a hypothesis that you are producing VBR mp3s that your player
>>> does not support.
>>
>> I think it does. However, I don't know enough about this to
>understand
>> how a file can be both, say, 128kb/s and VBR.
>
>Now I think about it, I *seem* to remember having problems with my
>SansaClip playing (at least some) VBR MP3 files, so possibly that is
>the
>problem. Unfortunately, my SansaClip ended up at the bottom of a
>puddle,
>and never worked right again(!!), so I can't test it.....
>
>So, you might want to try something like:
>
>ffmpeg -i int.flac -b:a 128 out.mp3
>
>Although, with CBR, I'd be tempted to go a little higher on the quality
>
>- especially with classical music. But I'd try 128 first, to check it
>solves the playing problem!
>
>Chris
>
>
>
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