benh wrote:
> By amazing coincidence, that error above is from 1-13_Last_Kiss.m4a.
> The error plus the bit immediately after, when the session ends:
>
> [alac @ 0x56149523bc40] invalid samples per frame: 0/s speed=80.7x
> Error while decoding stream #0:0: Invalid data found when processing
> input
> size= 5876kB time=00:06:07.15 bitrate= 131.1kbits/s speed=80.9x
> video:0kB audio:5768kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: 1.874181%
> [aac @ 0x561495222680] Qavg: 188.669
>
>
> By the end of this whole deal, the last 30 seconds of that song will be
> etched on my bones.
An expanded version of the conversion is below
Code:
--------------------
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5592f983b6c0] stream 0, sample 3949, dts
366782404
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5592f983b6c0] stream 0, sample 3950, dts
366875283
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5592f983b6c0] stream 0, sample 3951, dts
366968163
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5592f983b6c0] stream 0, sample 3952, dts
367061043
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5592f983b6c0] stream 0, sample 3953, dts
367153923
[alac @ 0x5592f98b2bc0] invalid samples per frame: 0
Error while decoding stream #0:0: Invalid data found when processing input
[out_0_0 @ 0x5592f9907d40] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.
size= 5831kB time=00:06:07.15 bitrate= 130.1kbits/s speed=78.8x
video:0kB audio:5768kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 1.090229%
Input file #0 (1-13_Last_Kiss.m4a):
Input stream #0:0 (audio): 3954 packets read (40275288 bytes); 3953 frames
decoded (16191488 samples);
Input stream #0:1 (video): 1 packets read (87523 bytes);
Total: 3955 packets (40362811 bytes) demuxed
Output file #0 (output.m4a):
Output stream #0:0 (audio): 15812 frames encoded (16191488 samples); 15813
packets muxed (5906100 bytes);
Total: 15813 packets (5906100 bytes) muxed
3953 frames successfully decoded, 1 decoding errors
[AVIOContext @ 0x5592f9898280] Statistics: 2 seeks, 26 writeouts
[aac @ 0x5592f9896b40] Qavg: 188.669
[AVIOContext @ 0x5592f98444c0] Statistics: 40387228 bytes read, 0 seeks
--------------------
Note it says zero samples in error - so no audio encoding error.
The "error" was that end of file was found before it was expected.
Below shows a dump of the file header which has a duration of 367246
msec which is 6 mins 17.246 sec.
During conversion the output converted time was 00:06:07.15 - so there
was fewer seconds than expected, so end of file was unexpected.
Using the same MPEG-4 utility, from the header output shows the duration
to be 367178 msec.
Code:
--------------------
File:
major brand: M4A
minor version: 0
compatible brand: M4A
compatible brand: mp42
compatible brand: isom
fast start: yes
Movie:
duration: 367247 ms
time scale: 44100
fragments: no
Found 1 Tracks
Track 1:
flags: 1 ENABLED
id: 1
type: Audio
duration: 367246 ms
language: ```
media:
sample count: 3954
timescale: 44100
duration: 16195584 (media timescale units)
duration: 367247 (ms)
bitrate (computed): 877.345 Kbps
Sample Description 0
Coding: alac (Apple Lossless Audio)
Sample Rate: 44100
Sample Size: 16
Channels: 2
--------------------
------------------------------------------------------------------------
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