Zhiming Wang 4d0dac2968

[ffmpeg] call ffmpeg with stdin redirected to the null device ...

Prevent FFmpeg from consuming stdin and interpreting the character
stream as a stream of interactive commands, specifically:

    ?      show this help
    +      increase verbosity
    -      decrease verbosity
    c      Send command to first matching filter supporting it
    C      Send/Queue command to all matching filters
    D      cycle through available debug modes
    h      dump packets/hex press to cycle through the 3 states
    q      quit
    s      Show QP histogram

This prevents misclicking a key or key sequence (e.g., h) produces a
large amount of debugging output which may confuse the unseasoned
user. It is also useful in a batch environment where an unsuspecting
user may not realize you-get could consume stdin through FFmpeg, e.g.

    while read url; do you-get $url; done <urllist

(Related: BashFAQ/089.)

Note that interactive commands are enabled in debug mode (which also
doesn't suppress FFmpeg's default logging).

---

A note on implementation:

An alternative would be FFmpeg's -nostdin option, which explicitly
disables interaction, but adding such an option to existing code would
be even more destructive than the stdin=DEVNULL approach taken here.

---

This commit also happens to fix a dual-call bug in
ffmpeg_concat_mp4_to_mpg.

2017-02-19 12:08:31 -05:00

..

__init__.py

add rtmpdump wrapper

2014-04-26 15:17:45 +02:00

ffmpeg.py

[ffmpeg] call ffmpeg with stdin redirected to the null device

2017-02-19 12:08:31 -05:00

join_flv.py

add unit tests

2013-02-12 22:04:39 +01:00

join_mp4.py

Support multi stts and mdhd version = 1

2015-01-07 17:00:49 -08:00

join_ts.py

Fix zhanqi

2015-06-16 18:33:45 +08:00

rtmpdump.py

[Processor] Fix rtmpdump not portable under Windows

2016-07-21 00:50:21 -04:00