[FFmpeg-trac] #7558(undetermined:new): Ignore coded resolutions in using -c:v copy?
FFmpeg
trac at avcodec.org
Thu Mar 13 11:44:18 EET 2025
#7558: Ignore coded resolutions in using -c:v copy?
-------------------------------------+-------------------------------------
Reporter: ponpon | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: unspecified | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by tomwillow):
I tested the file 1080.mp4 with newer ffmpeg(commit
7225e307be6a98a463b7cbb118ff1f20391f21e4 Fri Feb 14 14:52:33 2025 +0100).
This issue has been fixed at some time before.
And I played the output video, it can be playing well(a pure green frame).
{{{
./ffmpeg -y -v debug -i 1080.mp4 -c:v copy test.mp4
ffmpeg version N-118658-g7225e307be Copyright (c) 2000-2025 the FFmpeg
developers
built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
configuration: --enable-shared --disable-stripping --prefix=build
--extra-cflags='-fsanitize=address -g' --extra-ldflags='-fsanitize=address
-g'
libavutil 59. 58.100 / 59. 58.100
libavcodec 61. 33.102 / 61. 33.102
libavformat 61. 9.107 / 61. 9.107
libavdevice 61. 4.100 / 61. 4.100
libavfilter 10. 9.100 / 10. 9.100
libswscale 8. 13.100 / 8. 13.100
libswresample 5. 4.100 / 5. 4.100
Splitting the commandline.
Reading option '-y' ... matched as option 'y' (overwrite output files)
with argument '1'.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument 'debug'.
Reading option '-i' ... matched as input url with argument '1080.mp4'.
Reading option '-c:v' ... matched as option 'c' (select encoder/decoder
('copy' to copy stream without reencoding)) with argument 'copy'.
Reading option 'test.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option y (overwrite output files) with argument 1.
Applying option v (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url 1080.mp4.
Successfully parsed a group of options.
Opening an input file: 1080.mp4.
[AVFormatContext @ 0x617000000080] Opening '1080.mp4' for reading
[file @ 0x610000000340] Setting default whitelist 'file,crypto,data'
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Format mov,mp4,m4a,3gp,3g2,mj2
probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] ISO: File Type Major Brand:
isom
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Unknown dref type 0x206c7275
size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Processing st: 0, edit list 0 -
media time: 1024, duration: 12800
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Offset DTS by 1024 to make
first pts zero.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Setting codecpar->delay to 2
for stream st: 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] Before
avformat_find_stream_info() pos: 3962 bytes read:3962 seeks:0 nb_streams:1
[h264 @ 0x619000000580] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x619000000580] Decoding VUI
[h264 @ 0x619000000580] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x619000000580] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x619000000580] Decoding VUI
[h264 @ 0x619000000580] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x619000000580] nal_unit_type: 6(SEI), nal_ref_idc: 0
[h264 @ 0x619000000580] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0x619000000580] Format yuv420p chosen by get_format().
[h264 @ 0x619000000580] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264 @ 0x619000000580] no picture
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x617000000080] After
avformat_find_stream_info() pos: 1168 bytes read:3962 seeks:0 frames:1
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1080.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.18.101
Duration: 00:00:01.00, start: 0.000000, bitrate: 31 kb/s
Stream #0:0[0x1](und), 1, 1/12800: Video: h264 (High), 1 reference frame
(avc1 / 0x31637661), yuv420p(progressive, left), 1920x1080 [SAR 1:1 DAR
16:9], 0/1, 22 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Successfully opened the file.
Parsing a group of options: output url test.mp4.
Applying option c:v (select encoder/decoder ('copy' to copy stream without
reencoding)) with argument copy.
Successfully parsed a group of options.
Opening an output file: test.mp4.
[out#0/mp4 @ 0x611000001440] No explicit maps, mapping streams
automatically...
[vost#0:0/copy @ 0x617000001200] Created video stream from input stream
0:0
[file @ 0x610000001f40] Setting default whitelist 'file,crypto,data'
Successfully opened the file.
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Output #0, mp4, to 'test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf61.9.107
Stream #0:0(und), 0, 1/12800: Video: h264 (High), 1 reference frame
(avc1 / 0x31637661), yuv420p(progressive, left), 1920x1080 [SAR 1:1 DAR
16:9], 0/1, q=2-31, 22 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
[out#0/mp4 @ 0x611000001440] Starting thread...
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] Starting thread...
Press [q] to stop, [?] for help
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] EOF while reading input
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] Terminating thread with
return code 0 (success)
[out#0/mp4 @ 0x611000001440] All streams finished
[out#0/mp4 @ 0x611000001440] Terminating thread with return code 0
(success)
[AVIOContext @ 0x613000001000] Statistics: 3985 bytes written, 2 seeks, 4
writeouts
[out#0/mp4 @ 0x611000001440] Output file #0 (test.mp4):
[out#0/mp4 @ 0x611000001440] Output stream #0:0 (video): 25 packets
muxed (2809 bytes);
[out#0/mp4 @ 0x611000001440] Total: 25 packets (2809 bytes) muxed
[out#0/mp4 @ 0x611000001440] video:3KiB audio:0KiB subtitle:0KiB other
streams:0KiB global headers:0KiB muxing overhead: 41.723033%
frame= 25 fps=0.0 q=-1.0 Lsize= 4KiB time=00:00:00.92 bitrate=
34.6kbits/s speed= 500x
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] Input file #0 (1080.mp4):
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] Input stream #0:0
(video): 25 packets read (2809 bytes);
[in#0/mov,mp4,m4a,3gp,3g2,mj2 @ 0x613000000200] Total: 25 packets (2809
bytes) demuxed
[AVIOContext @ 0x6130000003c0] Statistics: 3962 bytes read, 0 seeks
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7558#comment:1>
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