def test_mux_next_packet_error(
tmpdir,
fixtures,
v_store, v_pt, v_enc,
a_store, a_pt, a_enc,
fmt,
count):
# v
v_src = fixtures.join(v_store)
v_pkts = marm.rtp.RTPCursor([v_src.strpath], packet_type=v_pt)
v_prof = pytest.probe(v_pkts)
# a
a_src = fixtures.join(a_store)
a_pkts = marm.rtp.RTPCursor([a_src.strpath], packet_type=a_pt)
a_prof = pytest.probe(a_pkts)
# mux
class MyException(Exception):
pass
local = {'call_count': 0}
def v_pkts_wrapper():
for i, v_pkt in enumerate(v_pkts):
local['call_count'] += 1
if i > count:
raise MyException('poop')
yield v_pkt
m_path = tmpdir.join('mux.{0}'.format(fmt))
with pytest.raises(MyException) as ei:
with m_path.open('wb') as fo:
marm.frame.mux(
fo,
video_profile={
'encoder_name': v_enc,
'pix_fmt': marm.VideoFrame.PIX_FMT_YUV420P,
'width': v_prof['width'],
'height': v_prof['height'],
'frame_rate': v_prof['frame_rate'],
'bit_rate': v_prof['bit_rate'],
'time_base': (1, 1000),
},
video_packets=marm.VideoFrames(v_pkts_wrapper()),
audio_profile={
'encoder_name': a_enc,
'bit_rate': a_prof['bit_rate'],
'sample_rate': a_prof['sample_rate'],
'channel_layout': a_prof['channel_layout'],
'time_base': (1, 1000),
},
audio_packets=marm.Frames(a_pkts)
)
assert 'poop' in ei.value
assert local == {'call_count': count + 2}
def test_concat_muxed(
tmpdir,
fixtures,
pool,
ffmpeg,
v_store, v_enc,
a_store, a_enc,
dur,
fmt):
# split v
v_path = fixtures.join(v_store)
v_parts = 0
v_pkts = marm.mjr.MJRRTPPacketReader(
str(v_path),
packet_type=marm.vp8.VP8RTPPacket
)
for i, part in enumerate(marm.rtp.split_packets(v_pkts, duration=dur)):
t_path = tmpdir.join('v-{0}.mjr'.format(i + 1))
with t_path.open('wb') as t_fo:
marm.mjr.write_header(t_fo, 'video')
for pkt in part:
marm.mjr.write_packet(t_fo, pkt)
v_parts += 1
# split a
a_path = fixtures.join(a_store)
a_parts = 0
a_pkts = marm.mjr.MJRRTPPacketReader(
str(a_path),
packet_type=marm.opus.OpusRTPPacket
)
for i, part in enumerate(marm.rtp.split_packets(a_pkts, duration=dur)):
t_path = tmpdir.join('a-{0}.mjr'.format(i + 1))
with t_path.open('wb') as t_fo:
marm.mjr.write_header(t_fo, 'audio')
for pkt in part:
marm.mjr.write_packet(t_fo, pkt)
a_parts += 1
# cursor for split parts
v_cur = marm.rtp.RTPCursor([
str(tmpdir.join('v-{0}.mjr'.format(i + 1)))
for i in range(v_parts)
],
marm.mjr.MJRRTPPacketReader,
packet_type=marm.vp8.VP8RTPPacket,
)
a_cur = marm.rtp.RTPCursor([
str(tmpdir.join('a-{0}.mjr'.format(i + 1)))
for i in range(a_parts)
],
marm.mjr.MJRRTPPacketReader,
packet_type=marm.opus.OpusRTPPacket,
)
# probe
v_prof = pytest.probe(v_cur)
a_prof = pytest.probe(a_cur)
# calculate mux points
mux_points = []
assert v_parts == a_parts
for i in range(v_parts):
# begin
v_cur.seek((i, 0))
v_b_drop = 0
a_cur.seek((i, 0))
a_b_drop = 0
a_b_delay = 0
a_b = a_cur.tell()
v_pkt = v_cur.current()
if v_cur.prev_key_frame():
v_cur.prev()
v_b = v_cur.tell()
a_b_delay = int((v_pkt.msecs - v_cur.current().msecs))
v_b_drop = (
v_cur.count((i, 0), lambda pkt: pkt.data.is_start_of_frame) - 1
)
elif v_pkt.data.is_key_frame:
v_b = v_cur.tell()
elif v_cur.next_key_frame():
v_cur.prev()
v_b = v_cur.tell()
a_cur.fastforward(v_pkt.msecs - v_cur.current().msecs)
a_b = a_cur.tell()
else:
assert not (
'Could not find key-frame in "{0}" part "{1}"'
.format(v_path, i + 1)
)
# end
v_cur.seek((i, -1))
v_pkt = v_cur.current()
if not v_pkt.data.is_start_of_frame:
if v_cur.prev_start_of_frame() is None:
assert not (
'Could not find prev start-of-frame in "{0}" part "{1}"'
.format(v_path, i + 1)
)
v_cur.prev()
v_e = v_cur.tell()
a_e = (i + 1, 0)
mux_points.append((v_b, v_b_drop, v_e, a_b, a_b_drop, a_b_delay, a_e))
# mux parts
for i, (v_b, _, v_e, a_b, _, a_b_delay, a_e) in enumerate(mux_points):
# packets
v_cur.seek(v_b)
v_pkts = v_cur.slice(v_e)
a_cur.seek(a_b)
a_pkts = a_cur.slice(a_e)
# mux
p_path = tmpdir.join('mux-{0}.{1}'.format(i + 1, fmt))
with p_path.open('wb') as fo:
marm.frame.mux(
fo,
video_profile={
'encoder_name': v_enc,
'pix_fmt': marm.VideoFrame.PIX_FMT_YUV420P,
'width': v_prof['width'],
'height': v_prof['height'],
'frame_rate': v_prof['frame_rate'],
'bit_rate': v_prof['bit_rate'],
'time_base': (1, 1000),
},
video_packets=marm.VideoFrames(v_pkts),
audio_profile={
'encoder_name': a_enc,
'bit_rate': a_prof['bit_rate'],
'sample_rate': a_prof['sample_rate'],
'channel_layout': a_prof['channel_layout'],
'time_base': (1, 1000),
},
audio_packets=marm.Frames(a_pkts, a_b_delay),
)
# xcode parts
xcodes = []
for i, point in enumerate(mux_points):
v_b, v_b_drop, v_e, a_b, a_b_drop, _, a_e = point
p_path = tmpdir.join('mux-{0}.{1}'.format(i + 1, fmt))
x_path = tmpdir.join('xcode-{0}.{1}'.format(i + 1, fmt))
cmd = [
ffmpeg,
'-i', p_path,
'-codec:v', v_enc,
'-filter:v',
'"select=gte(n\\, {0}), setpts=PTS-STARTPTS"'.format(v_b_drop),
'-codec:a', a_enc,
'-filter:a',
'"aselect=gte(n\\, {0}), asetpts=PTS-STARTPTS"'.format(a_b_drop),
x_path,
]
xcodes.append(' '.join(map(str, cmd)))
for _, ex in pool.imap(check_output, xcodes):
assert ex is None
# concat xcoded parts
c_txt_path = tmpdir.join('concat.txt')
c_txt_path.write('\n'.join([
'file {0}'.format(tmpdir.join('xcode-{0}.{1}'.format(i + 1, fmt)))
for i in range(len(mux_points))
]))
c_path = tmpdir.join('concat.{0}'.format(fmt))
cmd = [
ffmpeg,
'-f', 'concat',
'-safe', '0',
'-i', str(c_txt_path),
'-c', 'copy',
str(c_path),
]
subprocess.check_call(args=' '.join(cmd), shell=True)
