diff options
Diffstat (limited to 'mediabrowser/ffmpeg.py')
| -rw-r--r-- | mediabrowser/ffmpeg.py | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/mediabrowser/ffmpeg.py b/mediabrowser/ffmpeg.py index ea589d6..b174b59 100644 --- a/mediabrowser/ffmpeg.py +++ b/mediabrowser/ffmpeg.py @@ -18,7 +18,7 @@ def LoggedPopen(command, *args, **kwargs): def ffprobe_data(ospath): logging.info('ffprobe %s', ospath) - process = LoggedPopen(['ffprobe', '-v', 'quiet', '-print_format', 'json', + process = LoggedPopen(['ffprobe', '-v', 'fatal', '-print_format', 'json', '-show_format', '-show_streams', ospath], stdout=PIPE, stderr=DEVNULL) data = json.load(utf8reader(process.stdout)) assert process.wait() == 0, "ffprobe failed" @@ -31,14 +31,14 @@ def stream(ospath, ss, t): t_2 = t + 2.0 output_ts_offset = ss cutter = LoggedPopen( - shlex.split("ffmpeg -ss {ss:.6f} -i ".format(**locals())) + + shlex.split("ffmpeg -v fatal -ss {ss:.6f} -i ".format(**locals())) + [ospath] + shlex.split("-c:a aac -strict experimental -ac 2 -b:a 64k" " -c:v libx264 -pix_fmt yuv420p -profile:v high -level 4.0 -preset ultrafast -trellis 0" " -crf 31 -vf scale=w=trunc(oh*a/2)*2:h=480" " -f mpegts" " -output_ts_offset {output_ts_offset:.6f} -t {t:.6f} pipe:%d.ts".format(**locals())), - stdout=PIPE, stderr=DEVNULL) + stdout=PIPE) return cutter @@ -121,3 +121,23 @@ def thumbnail(ospath, width, height): " -f singlejpeg pipe:".format(height+(height/10), width, height)), stdout=PIPE) return process + + +def thumbnail_video(ospath, width, height): + duration = float(ffprobe_data(ospath)['format']['duration']) + + command = shlex.split("ffmpeg -v fatal") + chunk_startpos = range(min(int(duration)-1,30), int(duration), 500) + for pos in chunk_startpos: + command += ["-ss", "{:.6f}".format(pos), "-t", "2", "-i", ospath] + + filter = " ".join(map(lambda i: "[{}:0]".format(i), range(len(chunk_startpos)))) + filter += " concat=n={}:v=1:a=0 [v1]".format(len(chunk_startpos)) + filter += "; [v1] fps=14 [v2]" + filter += "; [v2] scale='w=trunc(oh*a/2)*2:h={}' [v3]".format(height + 6) + filter += "; [v3] crop='min({},iw):min({},ih)' [v4]".format(width, height) + command += ['-filter_complex', filter, '-map', '[v4]'] + command += shlex.split("-c:v libvpx -deadline realtime -f webm pipe:") + + encoder = LoggedPopen(command, stdout=PIPE) + return encoder.stdout
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