[FFmpeg-trac] #11557(avcodec:new): Abnormally choked loading for "non-existing PPS 0 referenced"?
FFmpeg
trac at avcodec.org
Wed May 7 14:22:41 EEST 2025
#11557: Abnormally choked loading for "non-existing PPS 0 referenced"?
------------------------------------+-----------------------------------
Reporter: wazer | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: h264 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
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Comment (by wazer):
Replying to [comment:16 MasterQuestionable]:
> ͏ You missed the point.
> ͏ I assume you confirm that with "-map v" the problem may still
reproduce.
> ͏ Then:
> ͏ Does playing "2_non-existing_PPS_0_referenced.mpeg" reproduce the
problem?
> ͏ I.e. `ffmpeg -v debug -hide_banner -nostdin -nostats -i "2_non-
existing_PPS_0_referenced.mpeg" -c copy -f null -`
>
> ͏ Otherwise, would using "-map a" instead reproduce too?
Sorry for the late reply
Here's the information
ffmpeg -v debug -hide_banner -nostdin -nostats -i "2_non-
existing_PPS_0_referenced.mpeg" -c copy -f null -
{{{
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument 'debug'.
Reading option '-hide_banner' ... matched as option 'hide_banner' (do not
show program banner) with argument '1'.
Reading option '-nostdin' ... matched as option 'stdin' (enable or disable
interaction on standard input) with argument 0.
Reading option '-nostats' ... matched as option 'stats' (print progress
report during encoding) with argument 0.
Reading option '-i' ... matched as input url with argument '2_non-
existing_PPS_0_referenced.mpeg'.
Reading option '-c' ... matched as option 'c' (select encoder/decoder
('copy' to copy stream without reencoding)) with argument 'copy'.
Reading option '-f' ... matched as option 'f' (force container format
(auto-detected otherwise)) with argument 'null'.
Reading option '-' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument debug.
Applying option hide_banner (do not show program banner) with argument 1.
Applying option nostdin (enable or disable interaction on standard input)
with argument 0.
Applying option nostats (print progress report during encoding) with
argument 0.
Successfully parsed a group of options.
Parsing a group of options: input url 2_non-
existing_PPS_0_referenced.mpeg.
Successfully parsed a group of options.
Opening an input file: 2_non-existing_PPS_0_referenced.mpeg.
[AVFormatContext @ 0000020e37edd540] Opening '2_non-
existing_PPS_0_referenced.mpeg' for reading
[file @ 0000020e37edda40] Setting default whitelist 'file,crypto,data'
[mpeg @ 0000020e37edd540] Format mpeg probed with size=2048 and score=26
[mpeg @ 0000020e37edd540] Before avformat_find_stream_info() pos: 0 bytes
read:32768 seeks:0 nb_streams:0
[mpeg @ 0000020e37edd540] probing stream 0 pp:2500
[mpeg @ 0000020e37edd540] Probe with size=2005, packets=1 detected
mpegvideo with score=25
[mpeg @ 0000020e37edd540] probed stream 0
[mpeg1video @ 0000020e37ef0400] Format yuv420p chosen by get_format().
[mpeg @ 0000020e37edd540] max_analyze_duration 5000000 reached at 5000000
microseconds st:0
[mpeg @ 0000020e37edd540] After avformat_find_stream_info() pos: 0 bytes
read:1822864 seeks:2 frames:127
Input #0, mpeg, from '2_non-existing_PPS_0_referenced.mpeg':
Duration: 00:00:09.98, start: 0.540000, bitrate: 2057 kb/s
Stream #0:0[0x1e0], 127, 1/90000: Video: mpeg1video, 1 reference frame,
yuv420p(tv, progressive, center), 1920x1080 [SAR 1:1 DAR 16:9], 0/1,
104857 kb/s, 25 fps, 50 tbr, 90k tbn, Start-Time 0.540s
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 49152 vbv_delay: N/A
Successfully opened the file.
Parsing a group of options: output url -.
Applying option c (select encoder/decoder ('copy' to copy stream without
reencoding)) with argument copy.
Applying option f (force container format (auto-detected otherwise)) with
argument null.
Successfully parsed a group of options.
Opening an output file: -.
[out#0/null @ 0000020e37f7dac0] No explicit maps, mapping streams
automatically...
[vost#0:0/copy @ 0000020e38634ec0] Created video stream from input stream
0:0
Successfully opened the file.
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Output #0, null, to 'pipe:':
Metadata:
encoder : Lavf62.0.100
Stream #0:0, 0, 1/90000: Video: mpeg1video, 1 reference frame,
yuv420p(tv, progressive, center), 1920x1080 [SAR 1:1 DAR 16:9], 0/1,
q=2-31, 104857 kb/s, 25 fps, 50 tbr, 90k tbn
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 49152 vbv_delay: N/A
[out#0/null @ 0000020e37f7dac0] Starting thread...
[in#0/mpeg @ 0000020e37ec2700] Starting thread...
[in#0/mpeg @ 0000020e37ec2700] EOF while reading input
[in#0/mpeg @ 0000020e37ec2700] Terminating thread with return code 0
(success)
[out#0/null @ 0000020e37f7dac0] All streams finished
[out#0/null @ 0000020e37f7dac0] Terminating thread with return code 0
(success)
[out#0/null @ 0000020e37f7dac0] Output file #0 (pipe:):
[out#0/null @ 0000020e37f7dac0] Output stream #0:0 (video): 250 packets
muxed (2552579 bytes);
[out#0/null @ 0000020e37f7dac0] Total: 250 packets (2552579 bytes) muxed
[out#0/null @ 0000020e37f7dac0] video:2493KiB audio:0KiB subtitle:0KiB
other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 250 fps=0.0 q=-1.0 Lsize=N/A time=00:00:09.96 bitrate=N/A
speed=2.06e+03x
[in#0/mpeg @ 0000020e37ec2700] Input file #0 (2_non-
existing_PPS_0_referenced.mpeg):
[in#0/mpeg @ 0000020e37ec2700] Input stream #0:0 (video): 250 packets
read (2552579 bytes);
[in#0/mpeg @ 0000020e37ec2700] Total: 250 packets (2552579 bytes)
demuxed
[AVIOContext @ 0000020e37eddec0] Statistics: 4389008 bytes read, 2 seeks
}}}
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11557#comment:18>
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