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559 Commits

Author SHA1 Message Date
Anton Khirnov ba32f28498 doc/examples/transcode: convert timestamps between filtering and encoding 
The timebases do not have to match.
 2023-06-03 11:27:42 +02:00
Anton Khirnov 811b0e02be doc/examples/transcode: stop using decoder's AVCodecContext.time_base 
The contents of this field are not defined for decoding. Use
pkt_timebase, which is the timebase of demuxed packets.

Drop a tautological av_packet_rescale_ts() call, as the stream and
decoder timebases are the same.
 2023-06-03 11:27:23 +02:00
Anton Khirnov 828d3b4432 doc/examples/transcode: set packet timebase for decoding 
It is recommended for callers to set it, though not required.
 2023-06-03 11:27:11 +02:00
James Almer ed3691338b doc/examples/transcode_aac: use av_samples_alloc_array_and_samples to allocate the input samples buffer and pointers 
Fixes -Wuse-after-free warnings and simplifies code.

Signed-off-by: James Almer <jamrial@gmail.com>
 2023-05-05 15:28:28 -03:00
Wenbin Chen 2db22d14bf doc/examples/qsv_transcode: Fix a bug when use more than one parameter set 
Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
 2023-03-17 14:13:37 +08:00
Stefano Sabatini cd0d267b92 doc/examples/mux: rename alloc_picture to alloc_frame 
The new name is consistent with the updated API.
 2023-03-12 16:45:05 +01:00
Marton Balint 2296078397 avutil/frame: deprecate AVFrame.coded_picture_number and display_picture_number 
Their usefulness is questionable, very few decoders set them, and their type
should have been int64_t. A replacement field can be added later if a valid use
case is found.

Signed-off-by: Marton Balint <cus@passwd.hu>
 2023-02-13 00:37:50 +01:00
Marton Balint 6b6f7db819 avcodec: add AVCodecContext.frame_num as 64 bit variant to frame_number 
Frame counters can overflow relatively easily (INT_MAX number of frames is
slightly more than 1 year for 60 fps content), so make sure we use 64 bit
values for them.

Also deprecate the old 32 bit frame_number attribute.

Signed-off-by: Marton Balint <cus@passwd.hu>
 2023-02-13 00:36:46 +01:00
Stefano Sabatini e3bbf5c17d doc/examples: fix make command, reference Makefile.example 
Fix regression since b25d6290c6.
 2023-02-11 18:06:02 +01:00
Stefano Sabatini 051e1ed1e2 examples/Makefile.example: add note about missing entries 2023-02-11 18:04:32 +01:00
Stefano Sabatini 34ff361921 examples: apply doxy entries consistency fixes 
Use consistent format for the @file field and file description.
 2023-02-11 17:49:01 +01:00
Stefano Sabatini 3d4dc6aa77 examples: rename transcoding to transcode 2023-02-11 17:49:01 +01:00
Stefano Sabatini 3856f82ef9 examples: rename scaling_video to scale_video 2023-02-11 17:49:01 +01:00
Stefano Sabatini cd8211527e examples: rename resampling audio to resample_audio 2023-02-11 17:49:01 +01:00
Stefano Sabatini 0a69ca656b examples: rename remuxing to remux 2023-02-11 17:49:01 +01:00
Stefano Sabatini ab2ec8ef01 examples: rename qsvdec to qsv_decode 2023-02-11 17:49:01 +01:00
Stefano Sabatini eac4324bfb examples: rename muxing to mux 2023-02-11 17:49:01 +01:00
Stefano Sabatini 7a53ae931d examples: rename metadata to show_metadata 2023-02-11 17:49:01 +01:00
Stefano Sabatini 2e4694707e examples: rename http_multiclient to avio_http_serve_files 2023-02-11 17:49:01 +01:00
Stefano Sabatini 1ae619e8ee examples: rename filtering_video to decode_filter_video 2023-02-11 17:49:01 +01:00
Stefano Sabatini 3367bd56d1 examples: rename filtering_audio to decode_filter_audio 2023-02-11 17:49:01 +01:00
Stefano Sabatini 7f5630a899 examples: rename demuxing_decoding to demux_decode 
Follow general scheme VERB_OBJECT.
 2023-02-11 17:49:01 +01:00
Stefano Sabatini f0a415c7eb examples: rename avio_reading to avio_read_callback 
Adopt general scheme VERB_OBJECT.
 2023-02-11 17:49:01 +01:00
Marvin Scholz 4d1c9fa871 doc/examples/metadata: use av_dict_iterate 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-12-01 11:21:14 +01:00
Wenbin Chen efe2b63c89 doc/examples: Add qsv_transcode example 
Add qsv_transcode example which shows how to use qsv to do hardware
accelerated transcoding, also show how to dynamically set encoding
parameters.

examples:
Normal usage:
qsv_transcode input.mp4 h264_qsv output.mp4 "g 60"

Dynamic setting usage:
qsv_transcode input.mp4 hevc_qsv output.mp4 "g 60 asyne_depth 1"
100 "g 120"
This command initializes codec with gop_size 60 and change it to
120 after 100 frames

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
 2022-11-22 13:52:38 +08:00
Jun Zhao 3497362be1 doc/examples/muxing: Remove unnecessary ret 
Remove unnecessary ret and make the code more compact

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
 2022-10-29 12:26:30 +08:00
Chema Gonzalez 7adf7502b8
doc/examples/extract_mvs: add motion information 
Note that the motion information includes subpel motion information

This was likely forgotten in 56bdf61baa.

Tested:
```
$ make examples -j
...
$ doc/examples/extract_mvs in.264 | head -40 | \
    csvcut -C framenum,source,flags |csvlook
| blockw | blockh |  srcx | srcy |  dstx | dsty | motion_x | motion_y | motion_scale |
| ------ | ------ | ----- | ---- | ----- | ---- | -------- | -------- | ------------ |
|     16 |     16 |    20 |   26 |     8 |    8 |       49 |       72 |            4 |
|     16 |     16 |   152 |   15 |   136 |    8 |       65 |       28 |            4 |
|     16 |      8 |   360 |    3 |   360 |    4 |        1 |       -6 |            4 |
|     16 |      8 |   360 |   13 |   360 |   12 |       -1 |        4 |            4 |
|     16 |     16 |   440 |   10 |   440 |    8 |        3 |       10 |            4 |
|      8 |     16 |   829 |    7 |   836 |    8 |      -31 |       -6 |            4 |
|      8 |     16 |   844 |    7 |   844 |    8 |       -1 |       -4 |            4 |
|     16 |     16 | 1,004 |   14 | 1,048 |    8 |     -177 |       24 |            4 |
|     16 |     16 | 1,096 |    8 | 1,096 |    8 |       -1 |        0 |            4 |
|     16 |      8 | 1,417 |   24 | 1,416 |    4 |        7 |       82 |            4 |
|     16 |      8 | 1,416 |   13 | 1,416 |   12 |        0 |        6 |            4 |
|     16 |      8 |    87 |   20 |    88 |   20 |       -7 |        0 |            4 |
|     16 |      8 |    99 |   44 |    88 |   28 |       45 |       66 |            4 |
...
```

Also:
```
$ make fate -j
...
```

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2022-09-23 22:42:19 +02:00
Andreas Unterweger 40f2ea971f doc/examples/transcode_aac: Bump date 
Signed-off-by: Andreas Unterweger <dustsigns@gmail.com>
 2022-05-02 15:01:15 +05:30
Andreas Unterweger 04642de4b4 doc/examples/transcode_aac: AAC encoder is no longer experimental 
Signed-off-by: Andreas Unterweger <dustsigns@gmail.com>
 2022-05-02 15:01:03 +05:30
Andreas Unterweger 3c7382e368 doc/examples/transcode_aac: Set decoder packet timebase 
Previously, the default timebase caused two warnings during decoding about not being able to update timestamps for skipped and discarded samples, respectively.

Signed-off-by: Andreas Unterweger <dustsigns@gmail.com>
 2022-05-02 14:59:38 +05:30
Andreas Unterweger e13429c9c4 doc/examples/transcode_aac: Don't ignore last encoded frame 
The last encoded frame is now fetched on EOF. It was previously left in the encoder and caused a "1 frame left in queue" warning.

Signed-off-by: Andreas Unterweger <dustsigns@gmail.com>
 2022-05-02 14:56:41 +05:30
Zhao Zhili d1a44f261a examples/decode_video: flush parser to fix missing frame 
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
 2022-04-22 11:26:51 +08:00
Andreas Rheinhardt 23cb87bb3c doc/examples/muxing: Remove outdated comment 
This comment only applies to the scenario in which one uses
the AVCodecContexts embedded in AVStreams. Yet this code sample
stopped doing so in 9897d9f4e074cdc6c7f2409885ddefe300f18dc7;
and the last major version bump even removed the public
AVCodecContexts in AVStreams. So just remove this comment.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-03-25 19:22:55 +01:00
James Almer f5ef91e020 doc/examples: convert to new channel layout-API 
Signed-off-by: James Almer <jamrial@gmail.com>
 2022-03-15 09:42:47 -03:00
Chad Fraleigh a90e41c590 doc/examples/metadata: Constify values from av_dict_get() 
Treat values returned from av_dict_get() as const, since they are
internal to AVDictionary.

Signed-off-by: Chad Fraleigh <chadf@triularity.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-11-18 19:18:01 +01:00
Andreas Rheinhardt b6aeee2d8b examples/remuxing: Fix use of uninitialized value 
Fixes Coverity ticket 1492326.
Regression since 53f374c08d.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-07 11:59:31 +02:00
Andreas Rheinhardt 9190302b2e examples/qsvdec: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:50 +02:00
Andreas Rheinhardt e9182820ad examples/hw_decode: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 86ec1093eb examples/filtering_video: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt a75f518b65 examples/filtering_audio: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt f495604361 examples/extract_mvs: Do not use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 0230d125cb examples/muxing: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 53f374c08d examples/remuxing: Don't use stack packet 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 78426da3f4 examples/remuxing: Use av_packet_rescale_ts() 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 8a23159797 fftools/ffmpeg, doc/examples: Remove redundant av_packet_unref 
av_interleaved_write_frame() already returns blank packets.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-03 20:50:49 +02:00
Andreas Rheinhardt 1ea3650823 Replace all occurences of av_mallocz_array() by av_calloc() 
They do the same.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-09-20 01:03:52 +02:00
Nicolas George 1698cd8422 doc/examples/encode_video: add explanations in comments. 2021-08-20 17:05:10 +02:00
Haihao Xiang c3ef9e0277 doc/examples/qsvdec: simplify this example via hw_device_ctx interface 
Signed-off-by: James Almer <jamrial@gmail.com>
 2021-08-11 13:47:47 -03:00
Andreas Rheinhardt 1be3d8a0cb avcodec/avcodec: Stop including channel_layout.h in avcodec.h 
Also include channel_layout.h directly wherever used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-07-22 11:14:31 +02:00
James Almer ae0863b91d examples/muxing: add missing header 
Fixed compilation broken by e67e02d156.

Signed-off-by: James Almer <jamrial@gmail.com>
 2021-06-10 21:19:39 -03:00