def setUp(self):
# Initialize ffmpeg once
if not self._avInitialized:
avformat.av_register_all()
self._avInitialized = True
def readPackets(fileName):
"""Read the packets of the given file and print them.
Uses the ffmpeg module directly.
"""
avformat.av_register_all()
# Open the file
formatCtx = avformat.av_open_input_file(fileName, None, 0, None)
# Fill the 'streams' fields...
avformat.av_find_stream_info(formatCtx)
# Get the AVInputFormat object
inputFormat = formatCtx.iformat.contents
print("Format: %s (%s)" % (inputFormat.long_name, inputFormat.name))
print("Duration: %s min" % (formatCtx.duration / decls.AV_TIME_BASE / 60))
# Iterate over the streams
videoIdx = None
for i in range(formatCtx.nb_streams):
stream = formatCtx.streams[i].contents
codecCtx = stream.codec.contents
v = codecCtx.codec_tag
fourCC = "%s%s%s%s" % (chr(v & 0xff), chr((v >> 8) & 0xff),
chr((v >> 16) & 0xff), chr((v >> 24) & 0xff))
if codecCtx.codec_type == decls.CODEC_TYPE_VIDEO:
videoIdx = i
print("Stream %s: Video '%s', %sx%s" %
(i, fourCC, codecCtx.width, codecCtx.height))
elif codecCtx.codec_type == decls.CODEC_TYPE_AUDIO:
print("Stream %s: Audio '%s'" % (i, fourCC))
else:
print("Stream %s: Other" % i)
if videoIdx is not None:
stream = formatCtx.streams[videoIdx].contents
codecCtx = stream.codec.contents
codec = avcodec.avcodec_find_decoder(codecCtx.codec_id)
if codec is None:
raise RuntimeError("Could not find decoder")
print("Video Codec: %s" % codec.long_name)
# Open the codec
avcodec.avcodec_open(codecCtx, codec)
avcodec.avcodec_close(codecCtx)
# Read the packets...
pkt = decls.AVPacket()
eof = False
idx = 0
while not eof:
# Read the next frame packet...
try:
eof = not avformat.av_read_frame(formatCtx, pkt)
if not eof:
print(
"Packet %s, stream_idx:%s, pts:%s, dts:%s, size:%s, duration:%s"
% (idx, pkt.stream_index, pkt.pts, pkt.dts, pkt.size,
pkt.duration))
idx += 1
finally:
avcodec.av_free_packet(pkt)
avformat.av_close_input_file(formatCtx)
def readPackets(fileName):
"""Read the packets of the given file and print them.
Uses the ffmpeg module directly.
"""
avformat.av_register_all()
# Open the file
formatCtx = avformat.av_open_input_file(fileName, None, 0, None)
# Fill the 'streams' fields...
avformat.av_find_stream_info(formatCtx)
# Get the AVInputFormat object
inputFormat = formatCtx.iformat.contents
print ("Format: %s (%s)" % (inputFormat.long_name, inputFormat.name))
print ("Duration: %s min" % (formatCtx.duration / decls.AV_TIME_BASE / 60))
# Iterate over the streams
videoIdx = None
for i in range(formatCtx.nb_streams):
stream = formatCtx.streams[i].contents
codecCtx = stream.codec.contents
v = codecCtx.codec_tag
fourCC = "%s%s%s%s" % (chr(v & 0xFF), chr((v >> 8) & 0xFF), chr((v >> 16) & 0xFF), chr((v >> 24) & 0xFF))
if codecCtx.codec_type == decls.CODEC_TYPE_VIDEO:
videoIdx = i
print ("Stream %s: Video '%s', %sx%s" % (i, fourCC, codecCtx.width, codecCtx.height))
elif codecCtx.codec_type == decls.CODEC_TYPE_AUDIO:
print ("Stream %s: Audio '%s'" % (i, fourCC))
else:
print ("Stream %s: Other" % i)
if videoIdx is not None:
stream = formatCtx.streams[videoIdx].contents
codecCtx = stream.codec.contents
codec = avcodec.avcodec_find_decoder(codecCtx.codec_id)
if codec is None:
raise RuntimeError("Could not find decoder")
print ("Video Codec: %s" % codec.long_name)
# Open the codec
avcodec.avcodec_open(codecCtx, codec)
avcodec.avcodec_close(codecCtx)
# Read the packets...
pkt = decls.AVPacket()
eof = False
idx = 0
while not eof:
# Read the next frame packet...
try:
eof = not avformat.av_read_frame(formatCtx, pkt)
if not eof:
print (
"Packet %s, stream_idx:%s, pts:%s, dts:%s, size:%s, duration:%s"
% (idx, pkt.stream_index, pkt.pts, pkt.dts, pkt.size, pkt.duration)
)
idx += 1
finally:
avcodec.av_free_packet(pkt)
avformat.av_close_input_file(formatCtx)
def setUp(self):
# Initialize ffmpeg once
if not self._avInitialized:
avformat.av_register_all()
self._avInitialized = True
