xmlstarlet Update Value Same Element value - xmlstarlet

Question

I would like to update the second value of the element block.
The problem that I'm having the two blocks with same element structure.
My goal is to update the second block of
1. /job/input/audio_selector/track
2. /job/stream_assembly/audio_description/language_code
Here is what I tried.
xmlstarlet edit -L \
--update "//job/input//audio_selector/audio_selector/track" \
--value "3,4" \
--update "//job/stream_assembly//audio_description/audio_description/language_code" \
--value "french" payload.xml
Here is my xml:
<?xml version="1.0" encoding="UTF-8"?>
<job href="/jobs/24883">
<input>
<deblock_enable>Auto</deblock_enable>
<deblock_strength>0</deblock_strength>
<no_psi>false</no_psi>
<order>1</order>
<timecode_source>zerobased</timecode_source>
<file_input>
<certificate_file nil="true"/>
<password>xxx</password>
<uri>source</uri>
<username>xxx</username>
</file_input>
<name>input_1</name>
<video_selector>
<color_space>follow</color_space>
<order>1</order>
<program_id nil="true"/>
<name>input_1_video_selector_0</name>
</video_selector>
<audio_selector>
<default_selection>true</default_selection>
<infer_external_filename>false</infer_external_filename>
<order>1</order>
<program_selection>1</program_selection>
<selector_type>track</selector_type>
<track>1</track>
<unwrap_smpte337>true</unwrap_smpte337>
<name>input_1_audio_selector_0</name>
</audio_selector>
<audio_selector>
<default_selection>false</default_selection>
<infer_external_filename>false</infer_external_filename>
<order>2</order>
<program_selection>1</program_selection>
<selector_type>track</selector_type>
<track>UPDATE THIS</track>
<unwrap_smpte337>true</unwrap_smpte337>
<name>input_1_audio_selector_1</name>
</audio_selector>
</input>
<timecode_config>
<require_initial_timecode>false</require_initial_timecode>
<source>zerobased</source>
<sync_threshold nil="true"/>
</timecode_config>
<ad_trigger>scte35_splice_insert</ad_trigger>
<ad_avail_offset>0</ad_avail_offset>
<priority>100</priority>
<user_data/>
<avsync_enable>true</avsync_enable>
<avsync_pad_trim_audio>true</avsync_pad_trim_audio>
<stream_assembly>
<name>stream_assembly_0</name>
<video_description>
<afd_signaling>None</afd_signaling>
<anti_alias>true</anti_alias>
<drop_frame_timecode>true</drop_frame_timecode>
<fixed_afd nil="true"/>
<force_cpu_encode>false</force_cpu_encode>
<height>1080</height>
<insert_color_metadata>false</insert_color_metadata>
<respond_to_afd>None</respond_to_afd>
<sharpness>50</sharpness>
<stretch_to_output>false</stretch_to_output>
<timecode_passthrough>false</timecode_passthrough>
<vbi_passthrough>false</vbi_passthrough>
<width>1920</width>
<h264_settings>
<adaptive_quantization>medium</adaptive_quantization>
<bitrate>14000000</bitrate>
<buf_fill_pct nil="true"/>
<buf_size nil="true"/>
<cabac>true</cabac>
<flicker_reduction>off</flicker_reduction>
<force_field_pictures>false</force_field_pictures>
<framerate_denominator nil="true"/>
<framerate_follow_source>true</framerate_follow_source>
<framerate_numerator nil="true"/>
<gop_b_reference>false</gop_b_reference>
<gop_closed_cadence>1</gop_closed_cadence>
<gop_markers>false</gop_markers>
<gop_num_b_frames>2</gop_num_b_frames>
<gop_size>50.0</gop_size>
<gop_size_units>frames</gop_size_units>
<interpolate_frc>false</interpolate_frc>
<look_ahead_rate_control>medium</look_ahead_rate_control>
<max_bitrate nil="true"/>
<max_qp nil="true"/>
<min_buf_occ nil="true"/>
<min_i_interval>0</min_i_interval>
<min_qp nil="true"/>
<num_ref_frames>1</num_ref_frames>
<par_denominator nil="true"/>
<par_follow_source>true</par_follow_source>
<par_numerator nil="true"/>
<passes>1</passes>
<qp nil="true"/>
<repeat_pps>false</repeat_pps>
<rp2027_syntax>false</rp2027_syntax>
<scd>true</scd>
<sei_timecode>false</sei_timecode>
<slices>1</slices>
<slow_pal>false</slow_pal>
<softness nil="true"/>
<svq>0</svq>
<telecine>None</telecine>
<level>4.1</level>
<profile>High</profile>
<rate_control_mode>CBR</rate_control_mode>
<gop_mode>fixed</gop_mode>
<interlace_mode>progressive</interlace_mode>
</h264_settings>
<selected_gpu nil="true"/>
<codec>h.264</codec>
</video_description>
<audio_description>
<audio_type>0</audio_type>
<follow_input_audio_type>false</follow_input_audio_type>
<follow_input_language_code>false</follow_input_language_code>
<language_code>English</language_code>
<order>1</order>
<stream_name nil="true"/>
<timecode_passthrough>false</timecode_passthrough>
<aac_settings>
<ad_broadcaster_mix>false</ad_broadcaster_mix>
<bitrate>192000</bitrate>
<coding_mode>2_0</coding_mode>
<latm_loas>false</latm_loas>
<mpeg2>false</mpeg2>
<sample_rate>48000</sample_rate>
<profile>LC</profile>
<rate_control_mode>CBR</rate_control_mode>
</aac_settings>
<codec>aac</codec>
<audio_source_name>Audio Selector 1</audio_source_name>
</audio_description>
<audio_description>
<audio_type>0</audio_type>
<follow_input_audio_type>false</follow_input_audio_type>
<follow_input_language_code>false</follow_input_language_code>
<language_code>UPDATE THIS</language_code>
<order>2</order>
<stream_name nil="true"/>
<timecode_passthrough>false</timecode_passthrough>
<aac_settings>
<ad_broadcaster_mix>false</ad_broadcaster_mix>
<bitrate>192000</bitrate>
<coding_mode>2_0</coding_mode>
<latm_loas>false</latm_loas>
<mpeg2>false</mpeg2>
<sample_rate>48000</sample_rate>
<profile>LC</profile>
<rate_control_mode>CBR</rate_control_mode>
</aac_settings>
<codec>aac</codec>
<audio_source_name>Audio Selector 2</audio_source_name>
</audio_description>
</stream_assembly>
<output_group>
<custom_name>file_group_4</custom_name>
<name nil="true"/>
<order>1</order>
<file_group_settings>
<rollover_interval nil="true"/>
<destination>
<password>xxx</password>
<username>xxx</username>
<uri>destination</uri>
</destination>
</file_group_settings>
<type>file_group_settings</type>
<output>
<description nil="true"/>
<extension>mov</extension>
<log_edit_points>false</log_edit_points>
<name_modifier/>
<order>1</order>
<mov_settings>
<growing_reference>false</growing_reference>
<include_clap>false</include_clap>
<include_cslg>true</include_cslg>
<omneon_padding>true</omneon_padding>
<reference>self_contained</reference>
<write_xdcam>false</write_xdcam>
</mov_settings>
<stream_assembly_name>stream_assembly_0</stream_assembly_name>
<container>mov</container>
</output>
</output_group>
</job>
I'm new using xmlstarlet I tried everything but still I can't get it right.
I hope somebody will help.
Thank you very much

Answer 1

xmlstarlet solution:
xmlstarlet ed -L -u "//job/input/audio_selector[2]/track" -v "3,4" \
-u "//job/stream_assembly/audio_description[2]/language_code" -v "french" payload.xml
...audio_selector[2] - select the 2nd node among audio_selector tags